Chapter Summaries

Oreki let White Room student Ichika Amasawa into his room after she exposed his secret relationships with Karuizawa and Kushida. Amasawa saw through Karuizawa’s disguise, and Oreki tried to interrupt her teasing by asking her to make horns with her hands.

• Oreki recognized the doorbell and knock as the secret code he used with Karuizawa, hid her shoes, and opened the door behind the security chain.
• Oreki found Ichika Amasawa outside, and she accused him of cheating on Arisu Sakayanagi with both Kushida and Karuizawa.
• Oreki let Amasawa into his room and called for Karuizawa to come out of the kitchen.
• Karuizawa confronted Amasawa, who quickly saw through her act and teased her about wanting something to happen with Oreki.
• Oreki stopped Amasawa’s teasing and asked her to put both hands on her head and make horns.

Oreki learned that Ichika Amasawa and several first-years were connected to Tsukishiro’s ongoing effort to expel Ayanokouji, though Amasawa said she also wanted him to stay. The school then announced a twenty-day, all-grade special exam on an uninhabited island, with varied challenges testing students’ abilities.

• Ichika Amasawa told Oreki and Karuizawa that Tsukishiro had offered first-years a reward for expelling Ayanokouji, and she agreed with Oreki that they both wanted him to remain at the school.
• Amasawa revealed that Riku Utsunomiya and Sakurako Haru had met with Tsukishiro, then admitted she had been recording the conversation on four phones.
• On May 12, Oreki noticed Katsuragi repeatedly seeming to want to speak with him and wondered how Kamuro had obtained contraceptives despite the school’s restrictions.
• Teacher Majima announced a twenty-day special exam spanning all grades and taking place on an uninhabited island.
• Majima explained that the exam would test a range of abilities, including academics, physical fitness, mental strength, and communication.

Teacher Majima explained the rules and stakes of the all-grade Uninhabited Island exam, prompting Class 2-A to plan around Oreki and Kōenji. Nagumo realized the flexible team rules could leave Class 3-A exposed to expulsion and costly penalties.

• Teacher Majima explained that teams could include up to six students, with major rewards for the top three groups and expulsion for students in the bottom five.
• Yanagi asked what would happen if a team member withdrew, and Teacher Majima confirmed that the remaining members could continue while the withdrawn student retained the group's result.
• Yanagi said Class 2-A could rely on its strongest students, and Kōenji and Oreki both agreed to participate.
• Nagumo worried that Oreki could join forces with the first-years to push Class 3-A into the bottom groups, leaving Nagumo facing enormous fines and risking his shops.

Class 2-D discussed the upcoming Uninhabited Island exam, and students debated whether Sudou could replace Kōenji as their strongest contender. After school, Oreki was approached by Ishizaki, Albert, and Shiina Hiyori, who came to ask for his help.

• Chabashira explained that students could form exam teams of one to six and outlined the island survival challenge, its rewards, and its expulsion risks.
• Horikita summarized the exam rules for Class D, while Kushida raised Kōenji’s name and students recalled his departure to Class A and refusal to return Class Points.
• Sudou offered to compete for rewards but said he would keep the Private Points and half the Class Points he earned, prompting classmates to vie for places on his team.
• Ishizaki followed Oreki after school and asked him for help; Oreki returned to his room with Ishizaki, Albert, and Shiina Hiyori.

Oreki turned down Shiina Hiyori’s invitation to team up for the Uninhabited Island exam, while she predicted the teachers would secure a remedial measure and another money-making exam might follow. The chapter left Sakayanagi meeting with her friend Honami Ichinose to discuss the special exam.

• Ishizaki and Albert visited Oreki and invited him to team up with their class, but Shiina Hiyori admitted she had let them approach without explaining the full exam rules.
• Oreki said he and Kōenji planned to go solo or form a team within their own class, refusing to join students from another class.
• Hiyori reasoned that the teachers would win students a starting pool of Points and that a cruise-ship exam might follow the island event, so teams did not need to be decided yet.
• Oreki sent Ishizaki and Albert away after considering Hiyori’s future, then wondered why Sakayanagi had not been in her room.
• Sakayanagi met Honami Ichinose for tea, intending to discuss the special exam and hoping their friendship would last beyond graduation.

Sakayanagi persuaded Ichinose to form an alliance between Class 2-A and Class 2-B for the special exam, despite reserving key advantages for Class A. Meanwhile, first-year representatives gathered for their first joint meeting, with Housen’s expulsion leaving Class 1-D represented only by Nanase.

• Sakayanagi offered Ichinose an alliance and argued that Class 2-B risked losing students if groups finished among the last five.
• Ichinose negotiated for Class 2-A to cover half the points needed if Class 2-B students faced expulsion, and Sakayanagi agreed.
• Ichinose questioned why Oreki was excluded from the alliance, and Sakayanagi explained that Oreki and Kōenji planned to compete alone.
• Sakayanagi threatened to ally with Ryuuen’s class if Ichinose refused, and Ichinose accepted the cooperation agreement.
• Yagami led the first-year representatives in a joint meeting, where Class 1-D was represented only by Nanase because Housen had been expelled.

At a meeting of first-year representatives, Kakeru Ryuuen demanded that Classes 1-A, 1-B, and 1-C give him 70% of their exam rewards in exchange for protection from expulsions. Sakurako Haru agreed on Class 1-B’s behalf only if it could keep fifteen million in value, citing its existing debt to Houtarou Oreki.

• Takuya Yagami proposed that the first-years unite because they could not afford the six-million-point penalty to prevent expulsions.
• Kakeru Ryuuen entered the meeting and claimed authority over Class 1-D after driving Kazuomi Housen out.
• Ryuuen presented a contract demanding 70% of Classes 1-A, 1-B, and 1-C’s rewards and promising that their students would not be expelled.
• Utsunomiya accused Ryuuen of trying to sow discord among the first-years, but Ryuuen threatened him and argued his deal was their safest option.
• Sakurako Haru offered to sign for Class 1-B if it could keep fifteen million in value, reminding Ryuuen that her class owed Houtarou Oreki thirty million points.

Ryuuen forced the first-years to sign a contract that protected their classmates from expulsion but left them with no gains. Afterward, Sakurako Haru, Utsunomiya, and Tsubasa Nanase recruited Ichika Amasawa to form a team for the Uninhabited Island exam and pursue Tsukishiro’s bounty.

• Ryuuen rejected the first-years’ attempts to delay their decision and made them sign his contract, then left after explaining the expulsion stakes they had avoided.
• Takuya Yagami accepted the deal as a way to protect his classmates, and the first-years left the room.
• Sakurako Haru, Utsunomiya, and Nanase stayed behind and invited Ichika Amasawa to join their team for the island exam.
• Amasawa questioned Nanase’s ties to Ryuuen and negotiated a five-million-point share if their team placed third.
• Amasawa swung at Nanase, who dodged, prompting Amasawa to remark that Nanase was not as harmless as she appeared.

Sakurako Haru and Utsunomiya weighed their uncertain alliance with Ichika Amasawa, while Oreki and Sakayanagi discovered their exam cards. Teacher Majima announced new card rules for the Uninhabited Island exam, leaving students able to trade cards and seek advantages or protection from penalties.

• Sakurako Haru told Utsunomiya that their verbal agreement with Ichika Amasawa was a test and that they would need time to learn whether she was an ally or an enemy.
• Oreki and Sakayanagi received the [Trial] and [Lead] cards, then found that students’ card information had been added to the OAA System.
• Teacher Majima explained eight Basic and Special Cards, their effects, and the rules for trading them within the same grade before the exam.
• Oreki considered how students could combine distinct cards and use cards such as Halving, Nullification, and Hitchhiker to reduce penalties or gain rewards.

Oreki proposed exploiting the Uninhabited Island exam’s item cards to earn about forty million Private Points, with Horikita and Kushida each promised a ten-percent share. The trio began planning to gather Hitchhiker Cards and combine them with Additional Cards to maximize rewards from a first-place group.

• Oreki met Horikita and Kushida at lunch and learned that Kushida had received a Nullification Card while Horikita had received an Insurance Card.
• Oreki explained that the new item cards reduced the exam’s risks but also created an opportunity to profit, estimating they could earn around forty million Private Points.
• Oreki promised Horikita and Kushida ten percent each of the proceeds, and Kushida agreed to hear the plan.
• Oreki proposed collecting Hitchhiker Cards and betting on groups likely to place near the top, since hitchhikers earned half of their chosen group’s Private Point rewards.
• Horikita calculated the potential payout for a first-place group, and Oreki explained that equipping every member with an Additional Card could double their rewards.

Oreki, Horikita, and Kushida planned to profit from the Uninhabited Island exam by gathering cards and betting on Kōenji, while Oreki considered how to deal with the White Room students. The chapter ended with Oreki approving Yagami’s request to meet Ayanokōji.

• Oreki explained that stacking Additional Cards with Hitchhiker Cards could double betting rewards, and told Kushida she could sell her Nullification Card.
• Oreki, Horikita, and Kushida divided up the work of recruiting a strong betting group and collecting cards, with Kōenji chosen as their likely first-place target.
• Kushida proposed obtaining cards from other grades, and Oreki suggested making a deal with the cash-strapped Nagumo and using Kushida’s connections with third-years.
• Kushida received a message from Yagami, who wanted her to introduce him to Ayanokōji.
• Oreki approved Yagami’s request, intending to use the meeting to address the White Room students.

Tsukishiro explained that he had stopped treating Ayanokouji’s expulsion as his true mission and was maintaining the appearance of pursuing it. He told Sumakiden that he had spent heavily to win support for the island exam, while doubting that Yagami would follow through.

• Tsukishiro recalled serving Mr. Ayanokouji and concluded that successfully expelling Kiyotaka Ayanokouji could bring Mr. Ayanokouji’s anger down on him.
• Tsukishiro decided to keep up the appearance of trying to expel Ayanokouji while protecting his own interests.
• Tsukishiro told Sumakiden that opposition from the Homeroom Teachers meant he might spend around twenty million yen to secure their support for the Uninhabited Island exam.
• Tsukishiro said he still distrusted Takuya Yagami’s promise to act against Ayanokouji.

Tsukishiro and Sumakiden prepared to intervene in the special exam, while Oreki and his allies began pursuing profits through the exam’s cards. Shiina proposed a card-buying and betting strategy, but the chapter ended with the question of whether Oreki or Kōenji would take first place.

• Tsukishiro explained that he wanted 20 million points ready for the special exam, and Sumakiden agreed that the adults would step in against Yagami.
• Kikyou Kushida quickly bought Additional Cards and a Hitchhiker Card, and the second-years acquired a third of the available cards by lunch.
• Kamuro told Sakayanagi that Kikyou was buying cards for Oreki, and Sakayanagi allowed her to continue because she considered Oreki’s earnings her own.
• Oreki met Shiina Hiyori in the library, where she proposed that Ryuuen gather Additional Cards and Hitchhiker Cards to earn points.
• Shiina explained that students could profit by betting on Oreki’s or Kōenji’s group, but she disliked gambling, leaving their choice unresolved.

Oreki negotiated with Shiina for Class C’s cards and a share of its exam rewards, then advised her to bet on Kōenji in the Uninhabited Island exam. He also confirmed that Shiina still wanted to become a National Library librarian, despite information suggesting her future would diverge from that dream.

• Oreki demanded half of Class C’s extra rewards and its Extra, Lead, Trial, and Hitchhiker Cards, and Shiina agreed.
• Oreki transferred ten million Private Points to Shiina and explained that Nagumo’s third-year backing did not make him the best betting choice.
• Oreki recommended betting on Kōenji, whose solo performance in the previous Uninhabited Island exam had left a strong impression on Shiina.
• Oreki asked whether Shiina’s dream had changed, and she said she still wanted to become a National Library librarian.
• Oreki recalled that Shiina’s future in the Precognitive Dream did not match her current ambitions.

Houtarou Oreki confronted Nagumo Miyabi after Shiina Hiyori left the library, and Nagumo challenged Oreki over his plan to buy third-year item cards. Their exchange ended with Oreki sizing Nagumo up as a potential source of money for the Deserted Island exam.

• Shiina Hiyori left the library to recruit Ryuuen into collecting item cards before a first-year rival could act.
• Oreki confronted Nagumo Miyabi, who had been listening to Oreki and Hiyori’s conversation, and accused him of wanting Shiina as a Student Council informant.
• Nagumo questioned Oreki’s friendship with Shiina because Sakayanagi Arisu had publicly announced that she was dating Oreki.
• Nagumo revealed that he had tracked Oreki and learned that Kikyou Kushida was buying third-year Hitchhiker and [Additional] Cards on Oreki’s behalf.
• Oreki learned that Nagumo had authorized four third-years to sell their cards for two million points, then implied that Nagumo was short on money and stared him down.

Houtarou Oreki pressured Nagumo into funding Class 1-D’s planned bottom-three finish and buying Kushida’s Nullification Card, then negotiated a wager on Rokosuke Kōenji. The chapter left Nagumo asking Kiriyama what he thought after secretly sharing the conversation with him.

• Oreki argued that Nagumo should help pay for Class 1-D to occupy the bottom three spots, and threatened to have first-years obstruct Class 3-A if he refused.
• Nagumo agreed to return two million points, pay for Kushida’s Nullification Card, and settle another four million after the exam, while proposing a joint betting plan.
• Nagumo offered to pay up to two million more in exchange for Oreki’s information, and Oreki named Rokosuke Kōenji as the student he would bet on.
• After Oreki left, Nagumo revealed that Kiriyama had heard their conversation through a call he had secretly opened.

Nagumo Miyabi paid Kiriyama to betray Class 3-B and offered Houtarou Oreki more Points to stay out of the third-years' exam. The Uninhabited Island Exam began with Arisu joining Oreki and the students gathering aboard the Hedgehog Cat to hear the rules.

• Nagumo warned Kiriyama that Class 3-B students were plotting against Class 3-A and promised him ten million Points to help undermine them.
• Nagumo and Kiriyama signed a ten-million-Point IOU, and Nagumo left an eleven-million-Point IOU for Oreki with Suzune to persuade him to stop interfering with the third-years.
• On May 20, the students boarded buses for the Hedgehog Cat, with Arisu participating in the exam and sitting beside Oreki so he could use Restoration to support her health.
• Katsuragi arranged for Shopping District informants to bring back contraceptives after learning the school's shops had stopped restocking them.
• Teacher Majima announced that the exam had 150 groups, with the bottom three groups paying class evaluation Points to the top three, and directed students to review the updated OAA System materials.

Teacher Majima explained the Uninhabited Island exam’s movement rules, tasks, group scoring, and safety measures, while Principal Tsukishiro outlined disembarkation routes and warned students against sexual misconduct. The students prepared to begin the exam, with Oreki noting the large-group option and Tsukishiro briefly directing his attention toward Oreki and Yanagi.

• Teacher Majima explained how designated-area arrivals, group rankings, and consecutive missed assignments affected students’ points.
• Teacher Majima described random tasks that could reward points and food, and explained that large groups could form from the fourth day by evenly dividing both groups’ scores.
• Teacher Majima distributed safety bracelets, and every student received 5,000 supply points for supplies.
• Principal Tsukishiro announced that first-year students would disembark first, followed by second- and third-year students, and that group routes would match.
• Principal Tsukishiro warned that sexual disputes could result in expulsion or police involvement, while Oreki noticed Tsukishiro looking toward him and Yanagi.

As the students prepared for the Uninhabited Island exam, Oreki relied on Class A to arrange his supplies and gave Kushida’s Nullification Card to Sakura so she could take a bottom-five slot. Oreki then approached Horikita and went to Class C to sell Ryuuen information, leaving Ryuuen wary of another costly deal.

• Principal Tsukishiro explained the exam’s rules, supply system, and penalties for prohibited actions.
• Sakayanagi redistributed Class A’s item cards, giving Oreki 7,500 supply points, while Katsuragi arranged his equipment and Kōenji declared he needed little.
• Kushida gave Sakura the Nullification Card so Sakura could participate solo and withdraw from a bottom-five position if needed.
• Oreki met Horikita and reminded her of his previous arrangement with Ryuuen, then proposed selling Ryuuen information about the exam.
• Ryuuen sent Hiyori to check on Oreki after Oreki asked whether he had plenty of points.

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.