Chapter Summaries

Oreki arranged a supply-trading scheme with Ryuuen and coordinated Hitchhike bets on Kōenji, while Ryuuen used his control of the first-years to direct their bets and protect students from expulsion. Nagumo diverged from Oreki’s instructions and told the third-years to bet on Oreki’s solo group, convinced Oreki’s advice about Kōenji was a deception.

• Oreki proposed that Ryuuen collect first-year supply points, buy supplies in bulk, and sell them on the island, in exchange for free supplies for Oreki and Student Council members.
• Principal Tsukishiro learned that students were stockpiling supplies, and the school announced how Hitchhiker Card holders would place bets before landing.
• Oreki, Horikita, and Kushida coordinated twenty students’ selections, and all twenty bet on Kōenji’s solo group.
• Ryuuen ordered first-years with Hitchhiker Cards to bet on Kōenji and assigned several students with Invalidate or Halve cards to finish near the bottom to manage the expulsion penalties.
• Nanase kept her supply points for GPS use while accepting basic supplies from Ryuuen’s base.
• Nagumo instructed the third-years to bet on Oreki’s solo group, reasoning that Oreki’s recommendation to bet on Kōenji was false information.

Nagumo and Kiriyama bet on Houtarou Oreki’s solo group, while many other students backed Kōenji, creating a huge potential loss for Tsukishiro. The Class A homeroom teachers restricted Tsukishiro’s movements to stop him interfering, leaving Sumakiden to act alone.

• Nagumo persuaded Kiriyama that Houtarou Oreki was the likeliest winner, and Kiriyama placed his bet on Oreki’s solo group.
• The Class A homeroom teachers asked to leave their assigned duties so they could keep watch on Tsukishiro and prevent him from interfering with the exam.
• The teachers told Tsukishiro that student bets could cost him 129,320,000 points, or nearly 150,000,000 points in total.
• Tsukishiro realized that 54 first- and second-year students had backed Kōenji’s solo group, while 18 third-year students had backed Houtarou Oreki’s.
• With his movements restricted, Tsukishiro told Sumakiden he would have to act on his own.

As the Uninhabited Island exam began, Oreki and Horikita discussed how to handle a crisis in Class 3-B after Ogiwara withdrew and devastated his class’s chances. Oreki argued that Kiriyama’s desperation pointed to another Class 3-B student who could turn things around, and Horikita began searching the student data for that person.

• Sumakiden decided he would deal with Kiyotaka Ayanokouji on the exam’s final day.
• Ryuuen directed Class 2-C and Class 1-D students to set up a supply tent beside the school’s station and sell supplies.
• Oreki and Horikita compared their departure points and discussed Horikita testing her limits on her own during the exam.
• Horikita identified Ogiwara as the Class 3-B student who had withdrawn, prompting his classmates to accuse him of betraying them.
• Horikita proposed using Reinforcement or paying Ogiwara to reverse his decision, but Oreki explained why both options might fail.
• Oreki suggested that a reluctant student in Class 3-B had driven Kiriyama to rely on Nagumo, and Horikita searched the class roster for that student.

Oreki watched Class 3-B lose hope of reaching Class A after Fuuka Kiryuin refused to help, while Kiriyama accepted Nagumo’s terms. Before the first-years departed for the island exam, Ibuki challenged Horikita, and Oreki gave her an unexplained boost through a handshake.

• Fuuka Kiryuin proposed winning first place to offset Ogiwara’s last-place penalty, but refused to make an effort for Class 3-B.
• Oreki explained that Class 3-B could not afford to buy a student’s cooperation, and Kiriyama acknowledged Nagumo’s offer of Points to help him reach Class A.
• Oreki advised Horikita to team up with Ibuki after the fourth-day task, but Ibuki arrived and challenged Horikita to a solo competition without understanding the scoring rules.
• Ibuki left for the boat at the F6 starting point, and Horikita said she did not want to compete with her.
• Oreki shook Horikita’s hand, and she suddenly felt unusually light and energetic.

Oreki joined Sakayanagi at the D6 supply base, where she planned to stay because of her poor health. He found Kamuro setting up a large tent for her and remarked that Kamuro was reliable, leaving Kamuro to continue the difficult work alone.

• Oreki rode from A6 and spoke with Matsushita, who questioned his closeness with Horikita and wondered how their relationship would develop.
• Oreki received a message over his walkie-talkie and went to D3, where Sakayanagi was waiting without Kamuro.
• Sakayanagi explained that she had assigned Kamuro to another task, and Oreki carried her to the D6 supply base.
• Oreki used Restoration on Sakayanagi and checked that her health was still good, though he believed she should avoid moving around freely.
• Oreki saw Kamuro struggling to set up a large tent for Sakayanagi and called her reliable, while Kamuro silently continued working.

Kamuro helped Oreki set up the tent while Sakayanagi organized Class A’s island-survey and support plan. After Sakayanagi reported that Kōenji was ignoring his assigned area, Oreki set off to get him moving, while Shiina questioned whether Oreki knew where to find him.

• Oreki drove the tent stakes into the ground with ease, and Kamuro caught himself staring at him while worrying that Sakayanagi might notice.
• Sakayanagi coordinated Class A’s terrain surveys, communications, and support teams from their base in area D6.
• Oreki told Sakayanagi he did not need to pursue first place, since Kōenji was the one expected to win the exam and secure the rewards tied to their bets.
• Sakayanagi reported that Kōenji had gone opposite the newly assigned area, so Oreki decided to intervene and make sure he earned points early.
• Oreki headed east instead of toward his own assigned area A8, while Shiina asked Sakayanagi whether sending him after Kōenji without giving him Kōenji’s location was wise.

Oreki met Fuuka Kiryuin while searching for Kōenji and persuaded her to investigate possible sabotage by the teachers. He found Kōenji at the Central Tower and challenged him to compete for first place through the evening of the sixth day.

• Hiyori asked Sakayanagi for Kōenji’s location and suggested offering stakes, but Sakayanagi said Oreki could find him without spending Points.
• Oreki encountered Fuuka Kiryuin in a tree and heard that she disliked Nagumo’s rule by intimidation and preferred being judged on her own.
• Oreki told Fuuka the Uninhabited Island exam might be sabotaged by teachers and asked her to protect it; she then left him to continue his search.
• Oreki reasoned that Kōenji would be watching the island from the Central Tower and found him at its summit.
• Oreki challenged Kōenji to a contest for first place lasting until eight o’clock on the evening of the sixth day.

Houtarou Oreki challenged Kōenji during the sports festival, then used Teleportation to reach a designated area first and claim its points. While waiting for Hoshinomiya Chie to scan him, he learned about her bitter past with Chabashira and her request that he warn her if Chabashira tried to recruit him.

• Oreki challenged Kōenji, who accepted by racing off toward the designated C5 area.
• Oreki photographed the A8 area, teleported there, and earned points as the first student to arrive alone.
• Hoshinomiya Chie delayed scanning Oreki and claimed that Ichinose had fallen in love and might like him.
• Oreki confronted Hoshinomiya about her hostility toward Chabashira, prompting her to reveal that Chabashira had ruined their former class's chance to compete for Class A.
• Hoshinomiya asked Oreki to notify her if Chabashira tried to buy him over, and Oreki pretended to be surprised.

Oreki considered Hoshinomiya Chie’s fixation on Chabashira, then earned points during the island exam while setting up Kōenji to believe they were competing. He returned to the D6 supply base and told Ryuuen he would rest while Kōenji continued pushing himself for six days.

• Hoshinomiya Chie explained that Chabashira could use family money to pull Oreki into Class D, and offered to report her if she tried.
• Oreki and Hoshinomiya scanned his score at the D8 checkpoint, where Nanase, Utsunomiya, and Sakurako Haru learned their group could not claim a bonus without all four members present.
• Oreki completed Basic Movement and ten tasks, deliberately losing one task to Kōenji, and earned 81 Points in total.
• Oreki returned to the lively D6 supply base, where Shiina Hiyori welcomed him and Ryuuen asked how he would ensure Kōenji took first place.
• Oreki told Ryuuen he would stop doing tasks and earn Basic Movement Points only once a day, leaving Kōenji to compete against him for six days.

Oreki helped Yanagi earn Basic Movement Points on the uninhabited island while avoiding too much contact with Sakayanagi, and their group spent the next few days comfortably. Meanwhile, Nagumo’s plan to profit from Oreki’s expected first-place finish began to look uncertain after Oreki’s behavior changed on the second morning.

• Kamuro reflected that she had already delivered Sakayanagi’s message to Oreki, though he had not come looking for her.
• Oreki carried Yanagi to a designated area so she could complete a Basic Movement and earn Points, then held her hand on the walk back.
• Oreki and his companions spent the second through fourth days on the island without much stress.
• Nagumo arranged the third-year teams to pursue his plan to earn about 20 million Private Points by relying on Oreki taking first place.
• Nagumo had six third-year students monitor Oreki, who scored 81 Points on the first day despite their attempts to block him.
• Nagumo noticed that events became strange on the morning of the second day.

Nagumo and Kiriyama discovered that Oreki had earned so few points by repeatedly skipping exam activities that he had fallen to 102nd place, while Kōenji led the rankings. At D6, Oreki, Sakayanagi, Shiina, and Chabashira settled into dinner, as the chapter left Nagumo and Kiriyama confronting the consequences of their bet on Oreki.

• Nagumo concluded that Oreki had skipped activities and told Kiriyama to investigate him at the D6 supply base.
• Kiriyama confirmed that Oreki spent the day at D6 with Class C students and missed the afternoon’s Basic Movement and tasks.
• Nagumo learned that Oreki visited one designated area on the fifth day but earned no points, then scored 11 points on the sixth day.
• Nagumo and Kiriyama checked the rankings and found Oreki at 102nd with 11 points, while Kōenji ranked first with 535 points.
• At D6, Sakayanagi and Shiina ate dinner with the other students, and Chabashira helped prepare the meal.

Shiina, Oreki, and Yanagi learned that Kōenji had earned the maximum possible score since Oreki stopped competing, while Shiina anticipated a large payout from her bet. After Oreki tracked Kōenji to their camp, Kōenji confronted him for secretly slacking off, but his accusation had only just begun.

• Shiina helped prepare food, and Chabashira told Hiyori she planned to resign and pursue her own life after teaching the class.
• Yanagi used Points and information from Katsuragi's group to confirm that Kōenji had earned 535 Points, the maximum possible score since the first day.
• Shiina calculated that her bet on Kōenji could earn her 13.4 million Points, while Chabashira warned that Kōenji was unpredictable.
• Oreki accepted Kōenji's request and used GPS tracking to locate him as he traveled toward the camp.
• Kōenji arrived and accused Oreki of tricking him into competing for Points while Oreki had been slacking off.

Rokosuke Kōenji withdrew after discovering Houtarou Oreki had fooled him into earning a huge score, but their newly formed team kept Oreki in the exam and split their Points. Oreki remained third and suspected the first-years at the top had hidden their real group arrangements.

• Rokosuke Kōenji discovered Oreki had been slacking, formed a large group with him, and then swam back to the cruise ship to withdraw.
• Hiyori worried that Kōenji's withdrawal would ruin their bet, while Principal Tsukishiro initially believed the wager would be voided.
• Teacher Majima explained that Oreki and Kōenji had shared their Points, so Oreki's continued participation meant the wager still stood.
• Oreki told Hiyori that he had tricked Kōenji into earning 535 Points quickly, which should keep the others from catching up despite Kōenji's withdrawal.
• Oreki checked the rankings and saw himself in third place with 273 Points, behind two first-year groups whose withdrawn members no longer blocked their bonus conditions.
• Oreki recalled Nanase asking about group withdrawals and suspected the first-years had pretended to be in the same group.

Oreki planned to secure first place in the Uninhabited Island exam after Kōenji forfeited, while Sakayanagi and Kamuro prepared to support him. Nagumo confronted Oreki over the eleven-million-point IOU, and Oreki insisted it remained valid regardless of the exam’s results.

• Oreki decided to compete himself after Kōenji chose to slack off, allowing Kōenji to remain his teammate and share the reward if Oreki placed first.
• Sakayanagi told Kamuro to pack light luggage for Oreki, and Kamuro prepared to help him on the island.
• Oreki reviewed the exam rules and planned to earn every Basic Movement point and participate in every task to build a lead.
• Shiina alerted Oreki and Sakayanagi when Nagumo and Kiriyama arrived, and Nagumo accused Oreki of deceiving him after being paid eleven million points to arrange the exam.
• Oreki said Nagumo’s IOU was still valid because it did not require the points to come from this exam, and Nagumo offered him one million points for ten minutes of his time.

Nagumo discovered that he had bet on Oreki instead of Kōenji, putting his Hitchhike wager and eleven-million IOU at risk. Kiriyama proposed that Oreki team up with Kōenji to share his score, but Oreki had not agreed by the end of their negotiation.

• Oreki met Nagumo and Kiriyama in the forest and learned that Nagumo had bet on Oreki, despite Oreki recommending Kōenji.
• Kiriyama urged Oreki to place first and explained that he hoped to use Nagumo's money to transfer to Class A.
• Kiriyama proposed that Oreki form a large group with Kōenji so they could tie for first and satisfy both sides' bets.
• Nagumo offered Oreki another two million to negotiate a team with Kōenji, then warned that he might not repay the eleven-million IOU if he earned no Points.
• Oreki rejected Nagumo's argument, pointing out that the IOU required repayment regardless of the exam's outcome.

Oreki negotiated with Nagumo for the Milk Tea Shop in exchange for his IOU and a promise to take first place in the exam. After learning how much Nagumo stood to earn, Oreki began the seventh day by pursuing the exam’s basic movement Points.

• Oreki offered Nagumo a deal for one of his shops and agreed to aim for first place in the exam.
• Nagumo accepted Oreki’s IOU and payment for ten minutes of his time in exchange for the Milk Tea Shop, then drew up a contract.
• Oreki revealed that he had formed a team with Rokosuke Kōenji, and Yanagi reacted with surprise when Oreki told him he had gotten a shop for free.
• Oreki told Sakayanagi that Nagumo could earn around thirty-eight million Points from the Hitchhiker Cards and had likely promised Kiriyama around ten million.
• At six the next morning, Oreki went to the first designated area for basic movement Points, where Hoshinomiya Chie scanned his tablet.

Oreki accompanied Kanji Ike as Ike earned points and revealed his determination to confess to Shinohara, while Ayanokouji noticed Tsubasa Nanase and suspected she had come to expel him. That evening, Oreki left camp to meet Kikyou Kushida at G1, but encountered Kei Karuizawa before Kushida arrived.

• Kanji Ike told Oreki that Yukimura had withdrawn, then asked to travel with him and said he planned to confess to Shinohara.
• Ike followed Oreki to a task and then to a designated area, earning points and a second-place group arrival bonus.
• Ayanokouji told Oreki that he had no memory of Tsubasa Nanase, and Oreki inferred that Nanase had been sent to expel Ayanokouji.
• At J3, Ike prepared dinner while Oreki left camp and headed to G1 for a meeting he believed Kikyou Kushida had arranged.
• Oreki arrived at G1 and unexpectedly met Kei Karuizawa before Kikyou Kushida showed up.

Oreki helped Karuizawa gather firewood, then took a stressed Kikyou to the caretaker’s cabin so she could vent. He discovered that Ichika Amasawa’s score was still active despite her missing GPS signal and left the possibility of a wristband malfunction—and her hidden plans—unresolved.

• Oreki hugged Karuizawa when she asked, then helped her gather firewood before she told him to stay away.
• Kikyou confronted Oreki for being late, and he brought her to the caretaker’s cabin to vent her stress.
• Kikyou said she could not find Horikita or Ichika Amasawa, but Oreki’s score check showed Amasawa still ranked second and had not withdrawn.
• Oreki considered whether Amasawa’s missing GPS signal came from a faulty wristband and recalled the possibility of someone operating in secret around Ayanokouji.
• After Kikyou showered, she told Oreki that Ike liked Shinohara, while Shinohara was wavering between Ike and Komiya and had teamed up with Komiya and Kinoshita.

Oreki noticed Nanase’s hatred toward Ayanokouji and suspected the missing GPS signals of Amasawa and Yagami were connected. When multiple wristband alarms sounded nearby, he and the others rushed out to investigate.

• Kushida explained that listening to people’s secrets gave her satisfaction but made relationships troublesome, and Oreki urged her to seek a genuine friend.
• Oreki returned to camp with Nanase and shared his jerky and water with the group.
• Nanase asked whether the students were happy at school, then directed the question to Ayanokouji, whose answer brought out her hatred.
• Oreki recalled that Amasawa’s and Yagami’s GPS signals had disappeared and suspected Yagami might be involved in a scheme.
• Oreki identified multiple wristband alarms, and Nanase, Ike, and Ayanokouji set off to find the students in trouble.

Oreki, Ayanokouji, and Nanase found Komiyama and Kinoshita unconscious in the dark, while Shinohara revealed she had been with them when they were attacked. Oreki failed to track Takuya Yagami and Ichika Amasawa, then spent supply points to check the score rankings.

• Ike discovered that his companions had vanished into the darkness as they hurried to search for people.
• Oreki found Komiyama and Kinoshita unconscious, and Nanase rushed off after noticing someone nearby.
• Ayanokouji found Komiyama’s damaged tablet, and Oreki deduced that Shinohara was hiding nearby.
• Shinohara emerged and explained that Komiyama and Kinoshita had been keeping watch while she picked flowers when an attacker struck.
• Oreki tried to use GPS to locate Takuya Yagami and Ichika Amasawa, but both searches failed.
• Oreki paid supply points to check the score rankings.