Chapter Summaries

Plot points and events

• Shiraishi Makoto speaks with Kiryūin Fūka, who says she entered the Special Exam for the Private Points. She expects fierce competition for the top three and tells Shiraishi she looks forward to competing against him on the island.
• The Second Year students gather for a briefing on the Uninhabited Island Special Exam. Hoshinomiya Chie explains that groups must survive on the island for two weeks while earning points.
• The main scoring system involves traveling to locations announced by the school. Groups earn one point per member who reaches a location, plus bonus points for the first three groups to arrive—provided every member is still in the exam and reaches the destination.
• Groups may skip instructions, but repeated consecutive skips incur increasingly steep point deductions. Any group member can secure the basic arrival point, though the whole group must arrive to qualify for a placement bonus.
• The school will issue several movement instructions each day. Most destinations will be near the previous one, but one daily destination may be selected at random; random assignments cannot occur on consecutive instructions.

Character developments and interactions

• Kiryūin is frank about her motivation—she spends money readily and wants the exam’s rewards—and presents herself as a confident competitor. Her exchange with Shiraishi establishes a direct challenge between them.
• Shiraishi recognizes that reaching the top three will be difficult and considers how the rules favor certain competitors.
• The rules disadvantage Shiraishi’s group relative to Kiryūin’s solo group: a group’s placement depends on its last-arriving member, making Kiryūin’s speed a major advantage. They also make the joint Second Year B/D team unlikely to win arrival bonuses because Sakayanagi Arisu’s poor health may slow the group.

Significant themes

• Individual ability versus group dependence: Rewards require the entire group to arrive, so one member’s limitations can hold everyone back.
• Strategic risk and endurance: Groups must balance earning points against conserving stamina, since destinations can be far apart and skipping too often becomes costly.
• Competition and personal motives: Students approach the exam differently—some seek status or victory, while Kiryūin openly pursues money.

Key plot points and events

• The school explains that random destination assignments can force students into exhausting backtracking. Reaching an assigned area before it is announced earns one point but forfeits the arrival-order reward; destinations can recur after an interval.
• Students receive GPS-enabled watches and linked tablets. The watches record check-in scores and monitor health, issuing increasingly serious alerts if a student’s condition worsens. A continuing alarm requires the student to return for medical examination, and staff may be dispatched if they do not respond.
• Watches cannot be removed or damaged without disabling their scoring function, so students would have to return to the departure point for a replacement—losing time and a scoring opportunity.
• Each group follows one of twelve route schedules, with groups sharing a schedule and the school aiming to make the routes comparably difficult.
• The school introduces a second scoring method: optional Challenges appearing around the island between 7 a.m. and 5 p.m. Their details become available on tablets only after they appear. The example is a math test: one participant per group, up to ten participants, with five, three, and one points—and a day’s ingredients—awarded to the top three.

Character developments and interactions

• Hoshinomiya Chie demonstrates the watch’s alert system for the students, while Chabashira Sae hands her the device.
• Shiraishi Makoto considers whether Tsukishiro Tokinari might sabotage his watch, but judges the tactic unlikely: it would be conspicuous and, at worst, cost his group a chance at a top-three finish.

Significant themes

• Endurance and strategy: The exam rewards athleticism, route planning, and decisions about whether to risk moving ahead before destinations are known.
• Fairness and competition: Route schedules vary, but are intended to have similar difficulty; Challenges offer additional, varied ways to earn points.
• Safety versus performance: Health monitoring and rescue procedures protect students, while equipment failures can still impose a significant competitive cost.
• Reputation and suspicion: Shiraishi recognizes that a visible act of sabotage could damage trust, even if it were technically possible.

Chapter Summary

Key Plot Points and Events

• The school reveals more details about the Uninhabited Island Exam, including two example Challenges:
  • Shot Put: A physical-ability Challenge requiring groups of at least three. The combined distance of three participants determines rankings, with points awarded to the top three groups. All groups receive a participation gift.
  • Fishing: An “other ability” Challenge requiring groups of at least two. The participant who catches the largest fish within an hour wins 15 points.
• Challenges will appear unpredictably between 7:00 a.m. and 5:00 p.m., though the first day begins at 10:00 a.m. and the final day ends at 3:00 p.m.
• The school explains that Challenges are divided into 40% academic ability, 30% physical ability, and 30% other abilities. Physical ability is especially important because students must constantly travel across the island.
• Students must register both at the Challenge site and through their tablets. Tablet information remains visible even after a Challenge fills up, meaning students may waste time traveling to an unavailable event.
• From the fourth day onward, Challenge rewards may include increases to the maximum number of group members:
  • First place: +3 members
  • Second place: +2
  • Third place: +1
• Groups can eventually merge through a watch-based linking system, but their points are averaged during the merger. This makes early mergers and careful partner selection strategically important.
• The school introduces Shopping Points. Every student receives 5,000 points, while Lead Card holders receive an additional 2,500. These points can be used to purchase survival supplies before the exam begins.
• Supplies include food, bottled water, tents, fishing equipment, matches, and other wilderness necessities. Prices are high, and carrying capacity limits how much students can stock.
• The school will also provide free daily necessities, toilets, showers, and later drinking water at Starting Port.
• Tablets will display the island map, designated areas, Challenge locations, rankings, school messages, and battery status. A GPS function tracking all students becomes available after the sixth day at the cost of one point per search.

Character Developments

• Shiraishi Makoto receives the supply manual and becomes aware of the extensive logistical and financial planning required for survival.
• The students generally recognize that physical ability and resource management will be crucial, even though academic Challenges make up the largest single category.
• Lead Card holders gain an additional economic advantage through extra Shopping Points.
• Groups must begin thinking beyond immediate survival: maximizing members, earning rewards, preserving points, and choosing merger partners will all affect long-term success.

Significant Themes

• Strategy and resource management: Students must balance spending, saving, traveling, and participating in Challenges.
• Physical ability versus academic ability: Although the exam formally includes multiple ability categories, physical strength and endurance influence nearly every aspect of island survival.
• Information and uncertainty: Tablet data is useful but imperfect, since Challenge listings do not update immediately.
• Cooperation and mistrust: Larger groups offer greater strength and flexibility, but mergers can reduce accumulated points through averaging.
• Inequality and strategic advantages: Lead Cards, group size, physical talent, and access to Challenge rewards may create major differences between students.
• Survival under artificial rules: The school provides basic support, but students must decide how much to rely on preparation, purchased supplies, and formal facilities.

Character Interactions

• Hoshinomiya Chie delivers the briefing and explains the exam rules, Challenge system, Shopping Points, and tablet functions.
• Mashima and Sakagami assist by bringing the merchandise cart used to demonstrate available supplies.
• School staff distribute manuals and explain how students can register for Challenges and purchase equipment.
• The rules encourage students to interact with other groups through possible mergers, while the point-averaging system creates tension over whether cooperation is worth the cost.

Chapter Summary: “Uninhabited Island Exam Begins”

Key Plot Points and Events

• After the initial briefing, Shiraishi Makoto’s seven-person group plans its supplies and strategy for the Uninhabited Island Exam.
• They purchase essential survival equipment, including tents, flint, flashlights, pots, portable food, drinking water, a portable water purifier, and a portable charging device.
• The group prioritizes mobility over excessive supplies. They avoid buying items such as fishing rods because the exam’s forced movements would make them impractical, and carrying too much would reduce their speed and stamina.
• The group-size restrictions become a major logistical concern. Although the limit will be lifted on the fourth day, students cannot check other groups’ locations until the sixth day, creating a communication gap.
• Shiraishi proposes using movement periods and visits to the starting point on the fourth and fifth days to exchange information. He is confident that his group can raise its limit to six people quickly enough to merge with another group.
• Shiraishi secretly meets Nanase Tsubasa. She reveals that the Acting Chairman has ordered her to make her move, suggesting that he will soon be removed from power.
• Nanase confirms that she is acting alone and has been assigned the same Route Schedule as Ayanokouji Kiyotaka. Shiraishi instructs her to switch sides naturally according to their previous plan, which will make it easier for their group to eventually merge with Ayanokouji’s and Kushida’s groups.
• July 20 marks the first day of the exam and Ichinose Honami’s birthday. The students hold only a modest celebration because they need to conserve energy before entering the island.
• The ship arrives at the island, and the students receive their purchased supplies. The exam consists of 153 groups, ranging from solo participants to four-person groups, with five groups facing expulsion.
• Kouenji Rokusuke occupies one of the doomed final positions and makes no effort to improve his situation. Yukimura openly condemns him, but Kouenji remains completely unconcerned.
• The students disembark by year, with the first years leaving first, followed by the second and third years. The exam officially begins once everyone reaches the beach.

Character Developments

• Shiraishi Makoto demonstrates practical leadership and strategic thinking. He carefully balances preparation, group mobility, communication, and the future merging of teams.
• Horikita Suzune contributes by analyzing the timing of the group-size restrictions and identifying the difficulties created by the delayed lifting of the rules.
• Hirata Yosuke focuses on communication and coordination, recognizing the danger of the two-day period in which groups cannot yet track one another.
• Nanase Tsubasa becomes an important potential ally for Shiraishi’s side. Her assignment alongside Ayanokouji creates an opportunity for her to infiltrate or transfer between groups.
• Ayanokouji Kiyotaka remains offscreen but is shown to be strategically influential, having arranged Nanase’s Route Schedule.
• Kouenji Rokusuke continues to reject cooperation and appears indifferent to the consequences of his actions. His refusal to participate effectively secures one of the exam’s expulsion slots.
• Yukimura Teruhiko becomes more openly confrontational, condemning Kouenji’s selfishness and lack of effort.
• Ichinose Honami receives a restrained birthday celebration, emphasizing how the exam forces students to prioritize survival and competition over personal occasions.

Significant Themes

• Preparation versus mobility: The chapter emphasizes that having more supplies is not always advantageous. Excess equipment can slow a group down and become a liability.
• Strategic cooperation: Success depends not only on individual ability but also on timing, information exchange, and forming alliances under restrictive rules.
• Information as power: The delayed ability to locate other groups makes communication a central challenge and encourages indirect planning.
• Rules and manipulation: The complicated group-size regulations force students to think beyond simple alliances; groups can merge only when their limits meet the required threshold.
• Individualism versus responsibility: Kouenji’s refusal to cooperate contrasts with the other students’ attempts to protect their groups and secure survival.
• Hidden political conflict: Nanase’s report about the Acting Chairman introduces a broader power struggle beyond the exam itself.

Character Interactions

• Shiraishi, Horikita, and Hirata collaborate on supply management and communication plans, showing different aspects of group leadership.
• Shiraishi privately directs Nanase to carry out their covert plan and eventually change allegiance.
• Nanase’s assignment alongside Ayanokouji links Shiraishi’s group to Ayanokouji’s future alliances.
• Yukimura confronts Kouenji over his deliberate refusal to contribute, but Kouenji dismisses the criticism.
• The students’ subdued birthday celebration for Ichinose reflects their shared awareness that the upcoming exam takes precedence over normal social life.

Chapter Summary: First Challenge

Key Plot Points and Events

• At exactly 9:00, the first-year students received their initial destinations on their tablets as soon as they disembarked. This gave them a major advantage over the second- and third-year students, who had to wait longer to leave the ship.
• Third-year students were especially disadvantaged, since disembarkation took roughly twenty minutes, leaving them little time to reach their first destination before the 10:00 challenge.
• Shiraishi Makoto joined Kanzaki Ryuji’s group using the watch-based team function. Their mixed group could not compete for the arrival-order reward without Hirata Yosuke, so they chose not to rush.
• Shiraishi compared routes with Ichinose Honami. Their destinations differed, but both groups began moving after Class 2-C had disembarked.
• The students crossed the primitive island terrain, using GPS and following paths cleared by the first-years. The jungle contained spiders, mosquitoes, and other hazards, though the school supplied insect repellent.
• Shiraishi’s group reached Area 8C, where many first- and second-year students had gathered. Four arrival notifications had already appeared, and the large crowd indicated that multiple Route Schedules had converged there.
• Tsubaki Sakurako and Utsunomiya Riku were also present, though they could not yet determine whether their route matched Shiraishi’s.
• At 10:00, the first Challenge became available. Fourteen events had been distributed across the island, but only one was located in Area 8C.
• The challenge was an “Anime Knowledge Quiz,” leaving Shiraishi shocked and uncertain about how the group should respond.

Character Developments

• Shiraishi Makoto demonstrates caution and strategic awareness by conserving energy instead of blindly pursuing the arrival reward. He also carefully observes route distributions and the number of competing groups.
• Kanzaki Ryuji takes a practical leadership role, activating the team and leading the group through the island.
• Ichinose Honami remains cooperative and organized, checking routes with Shiraishi before leading her own group toward its destination.
• Hirata Yosuke supports the group by carrying luggage and joining Shiraishi’s team, though his absence earlier prevents them from claiming the arrival reward.
• Ayanokoji Kiyotaka quietly communicates his destination to Shiraishi, suggesting continued mutual awareness and observation between the two.
• Tsubaki Sakurako and Utsunomiya Riku appear as another notable team, but the uncertainty surrounding route assignments highlights the exam’s competitive structure.

Significant Themes

• Unequal starting advantages: The first-years benefit from being given destinations immediately, while the older students lose time waiting to disembark.
• Strategy over speed: Since rewards are limited and Shiraishi’s group cannot fully qualify for them, conserving stamina becomes more valuable than rushing.
• Competition and information: Route convergence creates larger pools of rivals, making knowledge of group distribution and movement patterns important.
• Adaptation to unfamiliar environments: Students must deal with harsh terrain, insects, limited resources, and the possibility of physical exhaustion.
• Unpredictability of the exam: Despite the serious survival-oriented setting, the first challenge is unexpectedly an anime quiz, creating a humorous contrast and forcing the students to rely on different skills.

Character Interactions

• Shiraishi and Kanzaki formally establish their team through their watches.
• Shiraishi and Ichinose compare destinations before separating to follow different routes.
• Shiraishi briefly communicates with Ayanokoji through a nod and lip-reading, revealing their awareness of each other’s movements.
• Shiraishi exchanges greetings with Tsubaki and Utsunomiya when their groups meet at 8C.
• The chapter ends with Shiraishi turning to his teammates for advice after discovering that their first challenge is an Anime Knowledge Quiz.

Chapter Summary

1. Key Plot Points and Events

• The group examines nearby Challenges after realizing that most events require individual participation and have limited registration windows.
• Five reachable Challenges are identified: Making a Fire, Geography, Volleyball Ball Juggling, English, and the Anime Knowledge Quiz.
• Shiraishi Makoto, Kanzaki Ryuji, Katsuragi Kohei, and Hirata Yosuke split up, each choosing a different Challenge and agreeing to regroup at noon.
• Shiraishi heads to the Anime Knowledge Quiz, arriving first because it is located at the edge of the activity area.
• The Challenge allows only eight groups to register and awards points to the top three contestants, along with food or water based on group size.
• After registering, Shiraishi encounters Tsubaki Sakurako, who is surprised that the serious-looking Student Council president watches anime.
• The quiz consists of twenty questions. Shiraishi answers in ten minutes but gets only half correct, including an early question about the defeats suffered by the final form of “Masked Superhero Rod.”
• He fails to place, while a thin Third-Year student achieves a perfect score. The second- and third-place contestants score 90% and 85%.
• Tsubaki also fails to win, scoring twelve correct answers compared with Shiraishi’s ten. The chapter ends with the contestants admiring the winner as an “anime expert.”

2. Character Developments

• Shiraishi Makoto: Shows initiative by immediately choosing a Challenge and attempting the anime quiz despite lacking extensive knowledge of anime from this world. His willingness to participate in a seemingly casual event contrasts with his disciplined Student Council image. He remains composed and accepts his poor result without frustration.
• Kanzaki Ryuji, Katsuragi Kohei, and Hirata Yosuke: Demonstrate practicality by dividing up the nearby Challenges, maximizing the group’s chances of earning points and supplies.
• Tsubaki Sakurako: Interacts casually with Shiraishi and reveals her playful, teasing personality. Her surprise at his hobby suggests that she views him as socially capable and unusually serious.
• The Third-Year winner: Is introduced as an exceptionally knowledgeable anime fan, establishing him as someone with specialized expertise.

3. Significant Themes

• Strategy and resource management: The students must prioritize nearby Challenges, registration timing, battery power, food, and water.
• Individual ability within group survival: Although the expedition is organized in groups, many Challenges test students separately, requiring them to rely on personal skills.
• Appearance versus reality: Shiraishi’s image as a responsible Student Council president makes others assume he has little interest in anime, but his private hobby complicates that perception.
• Specialized knowledge and uncertainty: Even a generally capable student can be disadvantaged when facing a narrow field of expertise. Guessing allows participation but cannot replace genuine knowledge.
• Acceptance of failure: Shiraishi and the other contestants calmly acknowledge their losses, treating the result as a fair demonstration of the winner’s superior knowledge.

4. Character Interactions

• The group discusses which Challenges they can realistically reach before splitting up.
• Shiraishi exchanges greetings with the supervising teacher, reflecting his familiarity through Student Council work.
• Tsubaki talks with Shiraishi before the quiz, teasing him about his anime interest and suggesting that he appears to have a fulfilling social life.
• After the quiz, Tsubaki compares scores with Shiraishi. Their relaxed conversation shows growing familiarity and mutual ease.
• The contestants collectively recognize the Third-Year student’s perfect score, reinforcing his reputation as the undisputed anime expert.

Chapter Summary: Uninhabited Island: The First Day

Key Plot Points and Events

• After completing an early Challenge, Shiraishi Makoto returns to the meeting point and learns that the group has earned 8 points, though the winner’s identity is unknown.
• Katsuragi Kohei and Hirata Yosuke report that they arrived too late to participate in the first Challenges because the large number of groups made competition difficult.
• Kanzaki Ryuji successfully wins the Volleyball Challenge, earning fresh beef and seasonings. Since the meat cannot be preserved in the island’s heat, the group decides to eat it for lunch.
• A second batch of Challenges appears. Hirata enters the Grip Strength Test, but loses to powerful competitors Ayanokoji Kiyotaka and Hosen Kazuomi, earning 2 points and two liters of water.
• Shiraishi identifies a new Speed Race Challenge, which rewards participants with drinking water. Although useful for groups lacking supplies, it is not especially attractive to their well-equipped group.
• The four members purify river water and prepare lunch while waiting for their next movement destination.
• At 1 p.m., their designated area becomes 10C. They move quickly but finish behind groups that started closer, receiving only the standard 4-point arrival reward.
• At 3 p.m., their final destination is 8D. Because relatively few groups are assigned there, they earn 14 points, including the first-place bonus.
• Their later Challenge attempts are less successful. Shiraishi places second in a Comprehensive Knowledge Quiz, losing narrowly to Kiryūin Fūka, but earns 4 points and food ingredients sufficient for four people.
• The group finishes the first day with 36 points, a respectable result.
• Shiraishi reviews the day’s Challenges and recognizes that the school deliberately times them to create difficult strategic choices between pursuing Challenge rewards and securing better movement rankings.

Character Developments

• Shiraishi Makoto continues to act as the group’s strategist and information analyst. He studies the tablet, evaluates Challenge locations, manages water collection, and recognizes the school’s intentional use of timing and competition.
• Kanzaki Ryuji demonstrates initiative and usefulness by winning the Volleyball Challenge and gathering firewood for lunch.
• Katsuragi Kohei contributes to the group’s survival by organizing cooking equipment and preparing the meal.
• Hirata Yosuke shows willingness to take risks for the group by entering the Grip Strength Test, though he is defeated by stronger opponents. His loss does not seriously damage morale.
• Ayanokoji Kiyotaka, Hosen Kazuomi, and Kiryūin Fūka are established as formidable competitors: Ayanokoji and Hosen dominate the strength event, while Kiryūin wins the quiz.

Significant Themes

• Strategy over brute force: Success depends not only on winning Challenges but also on choosing when to pursue them and when to prioritize movement rankings.
• Resource management and survival: Fresh food, drinking water, purification, cooking, and preservation are immediate concerns.
• Competition and group advantages: Early individual losses are tolerable because the larger seven-person group structure is expected to provide greater benefits later.
• Uncertainty and deliberate manipulation: The school’s unpredictable Challenge releases force students to constantly adapt and make difficult decisions.
• Individual ability versus teamwork: Strong individual competitors can dominate specific events, but coordinated preparation and group logistics remain essential.

Character Interactions

• Katsuragi and Hirata discuss their missed opportunity to enter the first Challenges with Shiraishi.
• Kanzaki presents the beef he won, and the group agrees to consume it immediately.
• Shiraishi and the others coordinate roles for lunch: Kanzaki gathers fuel, Shiraishi collects and purifies water, and Katsuragi prepares the cooking equipment.
• Hirata reports encountering Ayanokoji and Hosen, and Shiraishi reassures him that losing to such powerful opponents is nothing to be ashamed of.
• Shiraishi competes directly against Kiryūin in the quiz, narrowly losing while still contributing valuable points and food to the group.

Summary of “Violent Means”

Key Plot Points and Events

• On the first day of the Uninhabited Island Exam, 68 Challenges were held. Roughly one-fifth offered essential supplies such as water or food ingredients, mostly through [Speed Race] Challenges with many winning slots.
• The school deliberately placed Speed Race Challenges near one another, creating a reliable way for students to obtain supplies. Although these Challenges offered few points, students lacking food or water could camp near previous locations and secure participation.
• Shiraishi Makoto’s group camped near the departure harbor, allowing them to return to the starting area for water and bathing. After dealing with crowded facilities, they set up camp and ate canned food.
• Shiraishi assessed the major competitors on his route schedule, including Kiryuuin’s group, Hosen/Amasawa/Nanase’s group, and Ayanokoji’s group. Ayanokoji was not yet exerting himself fully but was still demonstrating considerable physical ability.
• Shiraishi recognized that Tsukishiro’s remaining strategy was likely to use violence. Since ordinary competition could not force Shiraishi or Ayanokoji into the bottom groups, their opponents might attempt to injure them or their teammates and make them withdraw.
• The first few days were relatively safe because the island was crowded; any serious fight would attract witnesses. Shiraishi therefore chose to rest early.
• The following morning, Shiraishi’s group prepared for the first movement order at 7C. Because they had camped in eastern 8D, they were poorly positioned to win the arrival-order reward.
• The group divided their efforts: Katsuragi attempted the solo [Math Exam] at 8B, Kanzaki went directly to the movement destination, and Shiraishi and Hirata entered the [Balloon Blowing] Challenge at 9E.
• Balloon Blowing allowed two participants from each group, with registration limited to six groups. Only first place earned points, but the reward was a substantial 15 points. Shiraishi and Hirata arrived fourth, behind three groups that had camped near the Challenge.

Character Developments

• Shiraishi Makoto: Displays strategic awareness, carefully evaluating supply patterns, rival groups, and the possibility of violent interference. He remains confident because his points protect him from elimination, but he also recognizes that physical attacks could threaten his teammates.
• Ayanokoji Kiyotaka: Continues to reveal only part of his ability. His physical performance is strong enough to place his group safely above the bottom tier, even though he is not yet competing at full strength.
• Katsuragi Kohei: Takes responsibility for the academic Challenge, choosing the convenient [Math Exam].
• Hirata Yosuke: Works with Shiraishi in the Balloon Blowing Challenge, showing the group’s division of labor.
• Kanzaki Ryuji: Prioritizes the movement task, emphasizing the group’s practical strategy rather than pursuing every available Challenge.
• Kiryuuin, Hosen, Amasawa, and Nanase: Are identified as important competitors on the same route, though their groups’ exact strengths vary.

Significant Themes

• Strategy and resource management: Success depends not only on athletic ability but also on choosing campsites, tracking Challenge locations, and balancing supplies, points, and movement schedules.
• Safety versus competition: The school’s Speed Race system functions as a survival mechanism, ensuring students can obtain necessities despite intense competition.
• Violence as a strategic weapon: When normal performance cannot eliminate strong opponents, damaging their bodies or disrupting their groups becomes the remaining tactic.
• Hidden strength and restraint: Ayanokoji and Shiraishi both avoid revealing their full capabilities, while other groups try to assess their true limits.
• Team specialization: Groups improve their chances by assigning members to Challenges suited to their individual strengths.

Character Interactions

• Shiraishi discusses Challenge options with his teammates and assigns roles based on convenience and ability.
• His observations of Ayanokoji’s group reveal mutual awareness between two strong competitors, though neither openly confronts the other.
• Shiraishi’s earlier conversation with Kiryuuin provides information about route schedules and competing groups.
• Shiraishi and Hirata cooperate in the Balloon Blowing Challenge, while Katsuragi and Kanzaki handle separate objectives to maximize the group’s overall progress.

Summary

Key plot points and events

• Shiraishi Makoto and Hirata Yosuke win a balloon-blowing Challenge through their superior lung capacity, earning enough points to place Shiraishi’s team at 52 points.
• Shiraishi encounters Sakayanagi Arisu, who is traveling with Kamuro Masumi and Shiina Hiyori. Sakayanagi’s team has only 27 points, largely because her physical limitations make Challenges and movement difficult.
• Sakayanagi confirms that she is participating under Semi-Withdrawal Permission due to her congenital heart disease. She may earn points normally, but her team’s arrival order is not affected by her personal arrival time.
• Although Sakayanagi could remain at the harbor and let her teammates compete without her, she chooses to continue traveling and earning every possible point.
• Shiraishi explains that his team is heading toward 7C, while Sakayanagi’s destination is 9D. After receiving another arrival-point notification, he decides to accompany her.
• When Sakayanagi teasingly asks him to carry her, Shiraishi actually lifts her in a princess carry and heads toward 9D, embarrassing her and surprising both Kamuro and Hiyori.

Character developments

• Sakayanagi Arisu: Demonstrates determination and pride by refusing to exploit her special permission as an excuse to withdraw completely. Despite her fragile health and severe physical disadvantage, she insists on contributing directly to her team.
• Shiraishi Makoto: Shows compassion and concern for Sakayanagi’s exhausting condition. His decision to escort and carry her reveals a growing closeness and willingness to support her openly.
• Kamuro Masumi: Continues acting as Sakayanagi’s practical support, but is visibly surprised by the intimacy between Sakayanagi and Shiraishi.
• Shiina Hiyori: Remains gentle and observant, but becomes faintly embarrassed by Shiraishi carrying Sakayanagi.
• Hirata Yosuke: Quickly understands that Shiraishi and Sakayanagi need to speak privately and tactfully leaves them.

Significant themes

• Perseverance despite disadvantage: Sakayanagi’s participation emphasizes determination in the face of illness and an uneven competition.
• Fairness versus accommodation: The school’s Semi-Withdrawal Permission attempts to balance concern for Sakayanagi’s health with the need to preserve competitive fairness.
• Physical ability versus intelligence: The exam favors athletic students, limiting the influence of abilities such as academic talent and quick thinking.
• Trust and personal support: Shiraishi’s assistance suggests that emotional bonds and mutual care are becoming increasingly important amid the harsh exam conditions.

Character interactions

• Sakayanagi and Shiraishi discuss their scores, routes, and the conditions of her special permission, showing mutual openness and familiarity.
• Shiraishi’s physical support shifts their relationship from verbal concern to direct, intimate care.
• Sakayanagi’s teasing request turns unexpectedly serious when Shiraishi carries her, causing her embarrassment and revealing a playful but emotionally charged dynamic.
• Kamuro and Hiyori’s reactions highlight that Shiraishi and Sakayanagi’s closeness is noticeable even to those near them.

Key plot points and events

• Shiraishi Makoto carries the injured Sakayanagi Arisu out of the woods and sets her down once they reach the beach. Their closeness draws surprised looks from other students.
• Kamuro Masumi returns Arisu’s cane; Arisu playfully taps Makoto’s shin with it, and he helps support her as they walk.
• At the school’s seaside camp, Makoto urges Arisu to rest rather than push herself through the exam. He proposes comparing the groups’ scores by their active participants: divide his seven-person group’s score by seven and Arisu’s five-person group’s by five.
• Arisu refuses the advantage and suggests dividing her group’s score by six, counting herself despite being unable to compete. They settle on that arrangement.
• Arisu warns that Makoto’s group may be affected by events involving Ayanokoji and Tsukishiro’s plans. Makoto declines her proposal to adjust his group’s divisor, since doing so would put his side at a scoring disadvantage.
• Makoto leaves to rejoin his group before the next Challenges are announced. Arisu watches him go, quietly savoring the warmth of his hand.

Character developments

• Makoto shows care for Arisu and a strong sense of fair play, accepting a scoring arrangement that disadvantages his larger group. He also remains cautious about surveillance and interference connected to Ayanokoji.
• Arisu accepts that she needs rest but insists on being counted in the score comparison. Her teasing and lingering response to Makoto’s touch reveal affection beneath her composed, competitive manner.
• Kamuro and Hiyori remain with Arisu and are positioned as the teammates she trusts to keep competing while she rests.

Significant themes

• Fairness versus perfect equality: The characters recognize that the contest’s rules and differing group sizes make absolute fairness impossible, but they try to reach a reasonable compromise.
• Competition tempered by care: Makoto and Arisu want to settle their rivalry, yet neither wants the other to be harmed or unfairly disadvantaged.
• Trust and vulnerability: Arisu’s dependence on Makoto’s help contrasts with her usual formidable image, while their private tenderness becomes visible to others.
• Surveillance and strategy: The threat of being tracked or intercepted shapes Makoto and Ayanokoji’s decisions, including their choice not to use walkie-talkies.

Character interactions

• Makoto gently carries and supports Arisu; she protests the public embarrassment but later teases him about being lonely without his “little girlfriends.”
• They negotiate scoring terms as rivals who respect one another: Makoto offers an accommodation, Arisu rejects an excessive advantage, and he ultimately accepts her compromise.
• Arisu warns Makoto about the risk posed by Tsukishiro’s actions and Ayanokoji’s involvement, showing concern for his group as well as her own.
• Arisu’s final, private gesture—pressing her hand to her chest after Makoto leaves—suggests the encounter has affected her more deeply than she lets on.

Key plot points

• The school assigns Shiraishi Makoto’s group a distant destination: 3D, three kilometers away and separated by a mountain range. Nearby Challenges offer points and supplies, giving groups an incentive to stop short.
• The group splits briefly: Katsuragi Kohei attempts the Math Exam in 5D, while Shiraishi tries the English Exam in 6B. Katsuragi wins nothing; Shiraishi places third, earning two points and food for one person. Ishigami Kyo takes first.
• After learning that most groups have stayed in 5C rather than cross the mountain, Shiraishi leads Kanzaki Ryuji and Hirata Yosuke toward 3D. They reach it and earn five arrival-order points each; only one other group has arrived.
• Shiraishi goes to the coast to collect water. There he encounters Utsunomiya Riku, who says his group also reached 3D first among the teams they saw. Utsunomiya then reveals they have found leads concerning Hatano’s expulsion.

Character developments and interactions

• Shiraishi shows practical, strategic leadership: he weighs the Challenges against the arrival reward, divides tasks according to teammates’ strengths, and adjusts plans based on what other groups are doing.
• Katsuragi chooses the Math Challenge because it suits his abilities and avoids slowing the group on a difficult route.
• Hirata and Kanzaki support Shiraishi’s plan and monitor other groups’ movements.
• Shiraishi and Ishigami exchange only brief greetings after competing, underscoring their contrasting standing in the Challenge.
• Utsunomiya and Shiraishi meet cooperatively at the shore, and Utsunomiya opens a new line of inquiry about Hatano.

Significant themes

• Risk, effort, and reward: The groups must choose between easier Challenges and the more demanding journey to 3D.
• Strategy and teamwork: Success depends on using individual strengths, sharing information, and coordinating movement.
• Competition under imposed rules: The school’s movement orders shape students’ decisions and force them into unfamiliar territory.
• Uncertainty and investigation: The chapter’s closing revelation shifts attention toward the mystery behind Hatano’s expulsion.

Key plot points

• Utsunomiya Riku and Tsubaki Sakurako explain how they reconsidered who was responsible for Hatano’s expulsion. They first suspected Hosen Kazuomi, but conclude that his bluntness and motives don’t fit the covert, rule-based expulsion.
• They also investigated Nanase Tsubasa, but set that theory aside because she appears close to Shiraishi Makoto, who had already judged her innocent.
• Their attention turns to Yagami Takuya of Class B. His lack of interest in the Student Council, his efforts to keep Class B away from Class 2-A, and his proposal to surround Ayanokoji for the twenty-million-point bounty all seem suspicious.
• The group concludes that Yagami enrolled with a mission to target Shiraishi and Ayanokoji. They suspect Hatano’s expulsion was a test of the school’s rules—and possibly a move to silence someone who had uncovered something.
• Utsunomiya proposes retaliation: if Yagami acts on the island, they will intervene and make him pay.

Character developments and interactions

• Utsunomiya admits that anger clouded his judgment of Hosen. He now approaches the investigation more carefully and is determined to retaliate against Yagami.
• Tsubaki supports Utsunomiya’s reasoning, supplies key details about Yagami, and keeps an unknown Class 1-C girl discreetly away from the discussion.
• Shiraishi listens and guides the conversation without revealing everything he knows. His ambiguous answer about possible middle-school acquaintances leaves the others to draw their own conclusions.
• The three share their suspicions and reach the same conclusion without explicitly stating Yagami’s presumed assignment.

Significant themes

• Deception and deduction: Actions that seem ordinary—avoiding the Student Council or arranging exam partners—gain meaning when viewed together.
• Revenge and justice: Utsunomiya’s “blood for blood” response reflects the group’s shift from investigating Hatano’s expulsion to confronting its suspected perpetrator.
• Hidden motives and institutional power: The school’s rules and rewards may be used as tools to remove students, while the Class Assignment Law encourages suspicion about classmates’ true natures.

Key plot points and events

• Shiraishi Makoto confirms to Tsubaki Sakurako that he and Yagami Takuya are rivals: only one of them can remain at the school. Though Yagami now leads a first-year alliance holding a Trial Card, Shiraishi and Tsubaki agree to cooperate indirectly to disrupt Yagami’s plan to corner Ayanokoji Kiyotaka. Neither will reveal their full strategy, but Tsubaki will share information about when and where Yagami plans to act.
• Shiraishi’s four-person group reviews its dwindling food and water supplies. Their early push for points has cost resources, but being moved north should reduce competition for nearby Challenges.
• On the third day, the group earns points by visiting destinations and completing Challenges. They decline a distant movement instruction to conserve energy, finish the day with 79 points, and camp at 3C.
• Before dawn on the fourth day, Ayanokoji and Matsushita Chiaki hear a loud watch alarm nearby. Since an unanswered alarm triggers disqualification within five minutes, Ayanokoji takes a flashlight and tablet to investigate. Matsushita stops Sato Maya from following him into the dark forest.

Character developments and interactions

• Shiraishi is willing to collaborate with Tsubaki but remains cautious, setting clear limits on what each will disclose.
• Tsubaki proves pragmatic and politically perceptive, agreeing to help undermine Yagami without directly exposing her own plan.
• Shiraishi’s group shows discipline and strategic restraint: despite wanting a strong lead, they prioritize conserving strength over collecting every available reward.
• Ayanokoji responds quickly to the alarm, while Matsushita shows concern for safety by keeping the less athletic Sato at camp. Their exchange also reveals their attentiveness and coordination.

Significant themes

• Rivalry and shifting alliances: Students cooperate across class lines when their interests overlap, while still guarding their plans.
• Strategy versus cost: Pursuing points can exhaust supplies and energy, so success requires knowing when to stop.
• Risk and responsibility: The alarm creates an urgent threat, and the characters must balance helping others against the dangers of investigating in darkness.

Chapter Summary: “The Threat of Expulsion”

Key Plot Points and Events

• Ayanokoji responds to two alarms in the forest and discovers Komiya Yogo and Kinoshita Minori unconscious at the bottom of a slope, badly scraped and bruised.
• Their teammate, Shinohara Satsuki, is missing. Ayanokoji notices that the circumstances are suspicious: the students had traveled before the permitted movement period, and there are additional footprints near the scene.
• Komiya regains consciousness and explains that the group left early after twice failing to reach its designated locations on time. While he and Kinoshita were waiting for Shinohara, Komiya suddenly felt pain in his leg and fell down the slope, apparently after being attacked.
• Ayanokoji finds Shinohara hiding nearby. She confirms that she saw someone attack the other two but was too frightened to intervene.
• Because Komiya cannot stand and Kinoshita remains unconscious, both must withdraw and receive medical treatment. Their group is now in serious danger of finishing last, making expulsion likely because none of them can afford to use Private Points to avoid it.
• Ayanokoji asks Shinohara to accompany his group temporarily, since she is the only uninjured member and cannot realistically continue the exam alone. He plans to seek a group merger through Horikita, Hirata, or Ryuen.
• Teachers Chabashira and Sakagami arrive, but Chabashira explains that the GPS records show only Shinohara near the scene. This casts doubt on her accusation, although Ayanokoji points out that an attacker could have damaged or removed their watch.
• Ayanokoji advises the teachers to record every student who receives a replacement watch, hoping this may reveal the attacker. However, he recognizes that the culprit may have planned around this countermeasure.
• Meanwhile, Amasawa returns to her camp, claiming she went to the bathroom. Nanase doubts her story. The two reveal that a previously discussed plan will begin that day.

Character Developments

• Ayanokoji Kiyotaka: Demonstrates his sharp observational skills by identifying the incident as deliberate, noticing suspicious footprints, assessing the group’s expulsion risk, and proposing a method to track the attacker through replacement watches. He also takes responsibility for helping Shinohara survive the exam.
• Komiya Yogo: Regains consciousness and explains the circumstances of the attack. Despite his athletic background, his injuries leave him unable to continue.
• Kinoshita Minori: Remains unconscious and is portrayed as especially vulnerable because she lacks physical conditioning.
• Shinohara Satsuki: Reveals that she witnessed the attack. Her fear and inability to act show her lack of confidence, but she becomes dependent on Ayanokoji’s protection and leadership.
• Matsushita Chiaki: Responds calmly to Ayanokoji’s instructions and returns to camp, showing cooperation and trust.
• Chabashira Sae: Remains skeptical of Shinohara’s account because of the GPS evidence, but considers the possibility that the attacker manipulated the watches.
• Nanase Tsubasa: Becomes suspicious of Amasawa but does not confront her directly, choosing instead to observe and remember the incident.
• Amasawa Ichika: Gives a likely false explanation for her absence and appears confident that her secret actions will not be discovered.

Significant Themes

• The danger of expulsion: The injured group’s failure to meet movement requirements places them at immediate risk of losing the exam and being expelled.
• Manipulation and hidden strategies: The attack appears to be part of a larger scheme, showing that the exam involves sabotage as well as ordinary competition.
• Evidence versus testimony: Shinohara’s eyewitness account conflicts with the GPS data, highlighting the difficulty of proving wrongdoing when technology can be manipulated.
• Trust and deception: Ayanokoji seeks practical cooperation, while Amasawa lies about her movements and Nanase quietly investigates her behavior.
• Survival through alliances: Shinohara’s only realistic chance of continuing is to merge with a stronger group, emphasizing the importance of teamwork and strategic partnerships.

Character Interactions

• Ayanokoji questions Komiya, locates Shinohara, and organizes assistance for the injured students.
• He reassures Matsushita while directing her back to camp.
• He privately advises Chabashira on how to investigate possible watch tampering.
• Ayanokoji offers Shinohara temporary protection and plans to find her a stronger group.
• Chabashira challenges Shinohara’s accusation through the GPS evidence.
• Nanase questions Amasawa’s whereabouts, while Amasawa dismisses her suspicion and reminds her to follow their secret plan.

Key plot points and events

• At 7:00 a.m., Shiraishi Makoto’s group received a new movement instruction sending them toward 3A. Makoto nevertheless hurried with Kanzaki to a Three-Legged Race in 5E, hoping to win the reward that would expand a group’s membership limit. Katsuragi and Hirata went on to 3A.
• Makoto and Kanzaki arrived after the Challenge had started. Many notable students from different years—including Kiriyama, Hashimoto, and Ishigami—had also come for the valuable reward, but ordinary students had already claimed the available places.
• Makoto reunited with Ichinose Honami, who reported that her group had earned 65 points. Makoto’s group had earned 79. They compared their routes and discussed how the unpredictable locations of Challenges made it difficult to pursue the group-limit reward.
• Machida Koji brought Makoto, Ichinose, Horikita, and Ryuen aside for a message from Sakayanagi. She revealed that Komiya and Kinoshita, two students from Ryuen’s class, had been attacked and forced to withdraw. Their appeal was rejected because GPS data showed no one else at the scene.
• Ryuen inferred that the attackers had damaged the victims’ watches and that the school was unlikely to identify the culprit for them. With only Shinohara Satsuki left in the affected group, the immediate concern was protecting her and preventing the group from falling into the bottom five.
• Shinohara was staying with Ayanokouji’s group. Ryuen, despite his irritation, accepted that she was safe there.

Character developments and interactions

• Makoto acts decisively under time pressure, splitting his group’s tasks and pursuing the Challenge despite the conflicting route instruction. His reunion with Ichinose is warm and affectionate; they exchange news and compare scores.
• Ichinose quickly shifts from catching up with Makoto to finding a practical solution for Shinohara’s endangered group.
• Ryuen’s confident manner disappears when he hears about Komiya and Kinoshita. His experience with underhanded tactics helps him recognize how the attack may have been concealed; his concern then turns to Shinohara’s safety.
• Machida serves as the intermediary for Sakayanagi’s warning, while Horikita and the other class leaders gather to hear it. Ryuen’s trust in Ayanokouji’s ability offers reassurance, even as the incident exposes tensions and vulnerabilities between classes.

Significant themes

• Competition and scarce rewards: Groups must race for limited Challenge spots, while an expanded membership could improve their chances in the exam.
• Uncertainty and coordination: Changing routes and unpredictable Challenge locations make planning and meeting allies difficult.
• Violence and accountability: The attack and the school’s reliance on GPS evidence raise questions about whether the system can protect students or uncover wrongdoing.
• Alliance and protection: Despite interclass competition, students cooperate to safeguard Shinohara and prevent her group from being disadvantaged.

Plot points and events

• Ryuen Kakeru presses Sakayanagi Arisu for her plan to protect Komiya and Kinoshita’s group from expulsion. Sakayanagi notes that only two students have withdrawn from the exam and wonders why Kouenji, who had seemed likely to withdraw, is still on the island.
• Sakayanagi proposes that all four Second Year classes cooperate to find Challenges with no participant limit, since the whole year could suffer if a group finishes last. Shiraishi Makoto suspects her deeper goal is to unite the Second Years against the First Years, who are secretly targeting Ayanokoji Kiyotaka.
• Ichinose Honami and Shiraishi agree to cooperate. Sakayanagi offers Class 2-B’s radios to help monitor the Ayanokoji Group, while Ryuen leaves to inform his classmates.
• In Area 3A, Shiraishi tells Hirata Yosuke and Katsuragi Kohei about the attack on Shinohara’s group. They agree that other groups may also be at risk.
• The group spots Hoshinomiya Chie in a boat. Her unusual silence makes Shiraishi suspicious. With only thirteen minutes until the next movement instruction, he proposes moving north early to look for a Challenge that might increase their group’s participant limit, even if they lose placement points.

Character developments and interactions

• Shiraishi reads Sakayanagi’s strategic motive and later relies on his instincts about Hoshinomiya, asking his group to trust him.
• Sakayanagi presents cooperation as a way to protect the year’s standing, while also pursuing a broader response to the threat against Ayanokoji.
• Ichinose supports the alliance and quietly reassures Shiraishi by squeezing his hand.
• Ryuen prioritizes keeping his classmates useful and acts quickly once the plan is agreed.
• Hirata and Katsuragi respond to the attack with concern and practical caution.
• Hoshinomiya behaves unlike her usual outgoing self, prompting Shiraishi’s suspicion.

Significant themes

• Cooperation and self-interest: Classes may work together, but their motives and benefits are not identical.
• Reading hidden intentions: Shiraishi recognizes that Sakayanagi’s public explanation masks a larger strategy.
• Risk and trust: The group must decide whether to sacrifice exam points based on Shiraishi’s hunch.
• Uncertainty and deception: Kouenji’s unexplained absence from the withdrawal list and Hoshinomiya’s strange behavior leave key questions unresolved.

Plot points and events

• Shiraishi Makoto’s group reaches the 1D coast just before a new Open-Water Swimming Challenge is announced. The winner earns three extra group-member slots, with smaller rewards for second and third place.
• The group chooses Shiraishi, its strongest swimmer, to compete. He registers, changes, warms up, and rests while other contestants hurry to the site.
• Shiraishi wins decisively, benefiting from arriving early enough to prepare while the other swimmers have already spent energy rushing there.
• After the race, the group learns that a second member-slot Challenge—a knowledge quiz—is taking place elsewhere. Katsuragi suggests the school may be offering these rewards early because later mergers could cost groups more points than extra members earn.
• Shiraishi plans to contact Class 2-B directly so they can coordinate and make use of their growing numerical advantage.

Character developments and interactions

• Shiraishi takes responsibility for the race and demonstrates both confidence and strategic patience, turning the group’s early arrival into a practical advantage.
• Katsuragi contributes a broader strategic analysis, explaining why the school might distribute extra slots early.
• Kanzaki supports Shiraishi during the race and brings him a towel afterward; Hirata acknowledges that Shiraishi is the best choice to compete.
• Shiraishi’s group discusses its next steps, while Utsunomiya and Tsubaki arrive too late to enter and watch the race.

Significant themes

• Preparation and strategic positioning: Reaching a Challenge early provides time to rest and prepare, not merely a chance to register.
• The value of group size: Extra member slots may create a lasting advantage, but their usefulness depends on when groups merge.
• Planning under uncertainty: The students must infer the school’s wider strategy from the timing and rewards of its Challenges.

Chapter summary: “Kouenji Rokusuke Withdraws”

Key plot points and events

• After earning four points in Challenge 1D, Shiraishi Makoto leaves most of his group’s supplies with Kanzaki and the others, then travels to 9D to contact Ichinose Honami and replenish supplies at the Starting Port.
• At 9D, he runs into Kouenji Rokusuke, who confirms that he is withdrawing from the exam. Kouenji says the island has been an interesting experience but that he has plans—and would rather enjoy the food on the luxury cruise ship than continue.
• Shiraishi suspects Kouenji might only return to help if Wang Meiyu’s group faced serious trouble, but her team is strong and unlikely to need him.
• Sakayanagi Arisu tells Shiraishi that his group is currently fourth, while Hashimoto’s is sixth and Shinohara’s has dropped to eighth from the bottom. Kouenji’s withdrawal puts him in last place with a score of zero.
• Sakayanagi also reports that Ishigami Kyo’s first-year group won the 7H Challenge and its group-size reward. Shiraishi considers how the school awards extra slots and whether smaller first-year teams may waste some of them.
• Shiraishi decides to continue toward the beach shop to spend his remaining Shopping Points and restock, where he finds Mashima Tomoya on duty.

Character developments and interactions

• Shiraishi remains practical and considerate: he leaves supplies with his teammates and avoids asking Class 2-B for help, since Sakayanagi’s assistance was limited to Shinohara’s situation and the classes are competitors. He also thinks strategically about rankings, group-size rewards, and the exam’s rules.
• Kouenji stays confident and self-directed, withdrawing without hesitation. His exchange with Shiraishi is friendly but cryptic; his comment that “the stage is set” suggests he has been watching events closely and believes Shiraishi’s moment is coming.
• Sakayanagi shares intelligence and teases Shiraishi when he gets lost in thought, nudging him to keep moving.
• Shiraishi and Mashima have no extended conversation, but Shiraishi appreciates Mashima’s straightforward, dependable manner compared with his more eccentric or flighty teachers.

Significant themes

• Individual freedom versus collective competition: Kouenji chooses personal comfort and his own plans over continuing to compete, while the others remain focused on their groups’ scores.
• Strategy and unequal advantages: Group size can determine how effectively students attempt Challenges, giving larger teams an early edge and making rewards potentially more valuable—or wasteful—for smaller groups.
• Knowledge and hidden intentions: Kouenji’s remarks hint that he understands more about the unfolding exam than he reveals, while Shiraishi must make decisions with incomplete information.
• Trust and boundaries: Shiraishi declines to seek help from a rival class, showing that cooperation has limits when groups are competing.

Key plot points and events

• At the Starting Port, Mashima tells Shiraishi that Acting Chairman Tsukishiro has made no overt move, but has arranged for two rescue speedboats to be on standby instead of the usual one. Tsukishiro also patrols the island daily, giving him opportunities to act unseen. Shiraishi recognizes the arrangement as suspicious and says he will stay alert.
• Shiraishi buys supplies and finds Ichinose’s group in 9G. He and Ichinose merge their groups, bringing them to seven members.
• The group rests until the next movement instruction. Shiraishi’s prediction that it would be a random instruction is wrong: at 13:00 they are directed to 2D. They choose to attempt Challenges on the way rather than hurry across the island.
• The final instruction, announced at 15:00, sends them to 7B. Shiraishi’s group arrives first; Kanzaki’s group reaches the area at 16:15. Many other groups cannot make it before 17:00 and camp en route.
• The merged group climbs back to sixth place. Shiraishi expects competition to intensify as students run short of food and water, making supply-awarding Speed Races more attractive than point-only Challenges.

Character developments and interactions

• Shiraishi remains practical and alert: he investigates Tsukishiro’s unusual preparations, plans around travel demands, and anticipates how dwindling supplies will affect other students’ choices.
• Mashima shares his concerns privately, showing that he is monitoring Tsukishiro and trusts Shiraishi with sensitive information.
• Ichinose warmly offers Shiraishi her food. He shares a bite with her, revealing their ease and intimacy; she grows embarrassed when she remembers Horikita and Onodera are watching.
• Horikita quickly accepts the couple’s behavior as normal, while Onodera awkwardly pretends not to notice.
• Horikita also supports Shiraishi’s decision not to rush toward the next destination.

Significant themes

• Suspicion and hidden agendas: Tsukishiro’s extra rescue boat and daily absences hint at a possible plan.
• Adaptability and strategy: Groups must balance movement instructions, Challenges, rest, and travel distance.
• Scarcity and competition: As supplies diminish, survival needs are likely to reshape how students compete and which Challenges they choose.

Plot and events

• On day five, Shiraishi Makoto’s group skipped an impractical movement order but won the men’s and women’s Open-Water Swimming Challenges: Makoto and Onodera Kayano each earned 20 points. Their group rose to first place overall, ahead of Kiriyama’s Class 3-B group and Yagami Takuya’s first-year group.
• Shinohara Satsuki’s group abruptly vanished from the rankings at noon, suggesting it had merged with another group. The bottom ranks were dominated by first-year pairs and divided third-year classes; Kouenji was the only second-year among the bottom ten.
• Utsunomiya Riku told Makoto that he and Tsubaki Sakurako would meet with representatives of the first-year classes to discuss the plan involving Yagami and Ayanokoji. Makoto approved. He believes the pressure from Tsukishiro Tokinari is largely a façade, but is using it to build alliances, including with Nanase Tsubasa, Tsubaki, and Utsunomiya.
• On day six, students gained the ability to spend a point to locate anyone. Makoto’s group used its movement order and nearby Challenges efficiently.
• Nanase left Hosen Kazuomi’s group and began traveling with Ayanokoji, as part of Makoto’s effort to protect him. Kushida explained the 20-million-point reward for expelling Ayanokoji to Sato Maya, who was wary of Nanase but accepted her presence once she learned Makoto had arranged it.
• That night, Tsubaki, Utsunomiya, Yagami, and Takahashi Osamu gathered near the port for a first-year meeting. Hosen was absent; Takahashi then excused himself, leaving Tsubaki and Yagami to begin discussing the meeting’s purpose.

Character developments and interactions

• Makoto emerges as a strategic organizer: he converts outside pressure into alliances while continuing to protect Ayanokoji indirectly.
• Nanase demonstrates her commitment by joining Ayanokoji’s traveling party, while carefully avoiding behavior that might provoke suspicion or jealousy.
• Kushida manages Sato’s concerns by sharing a limited explanation of the danger and Makoto’s plan.
• Tsubaki and Utsunomiya cooperate despite the tensions surrounding Hosen, and conceal what they know about Hatano’s expulsion rather than confronting Yagami.
• Yagami appears informed about Tsubaki’s intentions and questions her calmly, suggesting the meeting may involve hidden agendas.

Themes

• Strategic alliances and mistrust: Students cooperate while withholding information and watching one another.
• Appearance versus reality: Tsukishiro’s apparent hostility may be performative, and the meeting’s participants may have motives they do not reveal.
• Competition and unequal resources: Group size and class divisions affect performance, while the new location feature intensifies the hunt for Ayanokoji.
• Protection through indirect action: Makoto helps Ayanokoji without openly disclosing every detail of the situation.