Chapter Summaries

Key Plot Points and Events

• Shinomiya Kaguya unlocks the 'Message' section of the Diary on the 31st day, but she can't send messages as 'Shinomiya Kaguya'; only 'Little Princess' and 'Two-Faced Person' can.
• Horikita Suzune reflects on her life and struggles with self-awareness and making friends, as advised by Asakura Toru.
• The Diary reveals that someone (ALICE) held hands with a female classmate (Xiao Mei) and confessed, suggesting possible romantic feelings.

Character Developments

• Shinomiya Kaguya: Frustrated with the Diary's restrictions, she feels discriminated against and vents her anger silently.
• Horikita Suzune: Struggles with self-reflection and the idea of making friends, feeling hesitant and indecisive.

Significant Themes

• Identity and self-awareness (Horikita Suzune)
• Communication and connection (Shinomiya Kaguya's frustration with the Diary's messaging restriction)
• Romantic feelings and relationships (ALICE's confession)

Character Interactions

• Shinomiya Kaguya interacts with the Diary, feeling frustrated and discriminated against.
• Horikita Suzune interacts with her reflection in the mirror, trying to understand herself better.
• ALICE (implied) interacts with Xiao Mei, confessing their feelings.

Key Plot Points and Events

• Horikita Suzune discovers she can leave comments on the diary after earning reading points.
• She finds two comments: one with a black question mark and another with insults directed at students from Class D, including herself.
• The insults match the auditory hallucination she experienced earlier, which she now realizes was Kushida Kikyo's voice.
• Asakusa Toru receives a reward, the 'Tenacity Headband', which forces the wearer to strive unremittingly towards a set goal.
• Ichinose Honami notices Asakusa Toru looking at Sakayanagi Arisu earlier in the day.

Character Developments

• Horikita Suzune realizes Kushida Kikyo's true nature and her intentions towards her.
• Asakusa Toru receives a reward but decides not to use it due to its effect of forcing him to work hard.
• Ichinose Honami ponders about Asakusa Toru's interest in Sakayanagi Arisu.

Significant Themes

• The theme of perception and reality is explored through the diary and its comments.
• The theme of work ethic and ambition is highlighted through the Tenacity Headband reward.

Character Interactions

• Horikita Suzune interacts with the diary and its comments, leading her to realize the truth about Kushida Kikyo.
• Asakusa Toru interacts with Ichinose Honami, discussing the matcha parfait and later the tutoring plan for Shiranami Chihiro and Shibata Hayate.
• Ichinose Honami observes Asakusa Toru's interest in Sakayanagi Arisu, leading her to have doubts about his intentions.

Key Plot Points and Events

• Asakusa Toru receives a new reward, the Tenacity Headband, from his Diary.
• The headband requires setting a clear goal and has an unclear effect.
• Toru tests the headband by attempting to sleep for three minutes and mastering Magnetic Field Rotation in one minute.
• He discovers that the headband requires high 'determination' to set a goal and works efficiently when determination is high.
• After achieving his goal, three doors appear in the White Room, and Toru encounters a middle-aged man named Simak Dian, an instructor of the White Room.

Character Developments

• Asakusa Toru shows caution and concern when using the Tenacity Headband, understanding its potential to distort one's self.
• He demonstrates determination and efficiency in mastering Amasawa Ichika's movements while wearing the headband.
• Amasawa Ichika reveals that Simak Dian is an instructor from the White Room, showing she has knowledge of the place beyond her usual interactions with Toru.

Significant Themes

• Determination and its role in achieving goals.
• The unclear effects and potential risks of the Diary's rewards.
• The mysterious nature of the White Room and its inhabitants.

Character Interactions

• Asakusa Toru interacts with the Tenacity Headband, testing its effects and understanding its limitations.
• He encounters Amasawa Ichika in the White Room, who provides information about Simak Dian.
• Toru meets Simak Dian, an instructor of the White Room, for the first time.

Key Plot Points and Events

• Asakusa Toru discovers that his sparring partner, Amasawa Ichika, can speak and is not just a combat replica.
• Amasawa reveals that she is in a dream-like state and the gym balances the time between her and Asakusa's reality.
• Asakusa learns about the White Room's 'S' rank reward: three doors leading to advanced bosses, with the last one being Ayanokoji Kiyotaka, the 'ultimate masterpiece'.
• Sakayanagi Arisu's class falls to Class B after the first month's exam, causing internal strife between Sakayanagi and Katsuragi factions.

Character Developments

• Asakusa Toru: Realizes the true nature of his sparring partner and the White Room's reward system.
• Amasawa Ichika: Reveals her dream-like state and provides information about the White Room's rewards.
• Sakayanagi Arisu: Remains calm and confident despite her class's fall, ready to prove herself in the next exam.
• Katsuragi Kohei: Admits his class's failure and decides to follow Sakayanagi's instructions for the next exam.
• Hashimoto Masayoshi: Actively seeks credit for his actions against Katsuragi and asks for a reward.

Significant Themes

• The nature of reality and dreams, explored through Amasawa's dream-like state.
• The consequences of failure and the struggle to maintain one's position, seen in Sakayanagi's class.
• The importance of adaptability and change, as demonstrated by Katsuragi's decision to follow Sakayanagi's lead.

Character Interactions

• Asakusa Toru and Amasawa Ichika: Asakusa learns about Amasawa's true nature and the White Room's rewards through their conversation.
• Sakayanagi Arisu and Katsuragi Kohei: A power struggle ensues between the two leaders of Sakayanagi and Katsuragi factions, with each blaming the other for their class's fall.
• Hashimoto Masayoshi and Sakayanagi Arisu: Hashimoto seeks credit and a reward from Sakayanagi for his actions against Katsuragi.

Summary of Chapter 72-73: "Who Should Serve as a Mirror"

Key Plot Points and Events

• Hashimoto Masayoshi asks Sakayanagi Arisu if she's a lesbian, causing her to freeze up.
• Horikita Suzune observes her classmates' unchanged behavior after the previous day's incident, feeling isolated but not caring about their gossip.
• Horikita Suzune decides not to use Asakusa Toru's loan service to interact with her classmates.
• Horikita Suzune visits Kushida Kikyo in her dorm room, finding her shut in and despondent due to the exposure of her true nature on the message board.

Character Developments

• Sakayanagi Arisu shows discomfort when asked about her sexual orientation.
• Horikita Suzune maintains her independent stance and decides not to engage with her classmates' drama.
• Kushida Kikyo is revealed to be the 'Handprint Sister' and 'Two-Faced Person' from the message board, causing her to shut herself away in her room.

Significant Themes

• The exposure of one's true colors and its consequences.
• The struggle to maintain one's public image versus one's true self.
• The isolation and loneliness of Horikita Suzune due to her independent stance.

Character Interactions

• Hashimoto Masayoshi interacts with Sakayanagi Arisu, asking her a personal question that makes her uncomfortable.
• Horikita Suzune observes her classmates' behavior and decides not to use Asakusa Toru's loan service to interact with them.
• Horikita Suzune visits Kushida Kikyo in her dorm room, trying to understand her reasons for being absent and shut in.

Key Plot Points and Events

• Kushida Kikyo is overwhelmed by her classmates' whispers about her true nature and stress, leading her to skip class.
• Horikita Suzune visits Kushida Kikyo, trying to understand her behavior and inviting her to be friends.
• Kushida Kikyo, initially hostile, is baffled by Horikita Suzune's genuine invitation and asks for a reason.

Character Developments

• Kushida Kikyo: Struggles with her stress and the exposure of her true nature, initially lashing out at Horikita Suzune but later shows curiosity and vulnerability.
• Horikita Suzune: Shows growth by acknowledging her past mistakes, seeking to change, and genuinely reaching out to Kushida Kikyo.

Significant Themes

• Appearance vs. Reality: Both characters struggle with others seeing only their surface-level appearances, not their true selves.
• Trust and Betrayal: Both characters have been betrayed by others, leading to their current mistrust and defensive behaviors.
• Self-Acceptance: Both characters are on a journey towards accepting and understanding their true selves.

Character Interactions

• Horikita Suzune and Kushida Kikyo: Their interaction is tense initially, with Kushida Kikyo lashing out and Horikita Suzune remaining calm and understanding. Horikita Suzune's genuine invitation to be friends leaves Kushida Kikyo confused and curious.

Key Plot Points and Events

• Horikita Suzune confesses her past struggles and insecurities to Kushida Kikyo, asking her to be a 'mirror' to reflect her image.
• Kushida Kikyo agrees, but also pinches Horikita Suzune's cheeks and scolds her for being stupid.
• Horikita Suzune admits she disclosed information during the special exam due to financial constraints.
• Kushida Kikyo reveals she knows Horikita Suzune's fundamental problem is her stupidity.
• Horikita Suzune asks for advice, but Kushida Kikyo refuses to provide directions.
• Horikita Suzune leaves Kushida Kikyo's room.

Character Developments

• Horikita Suzune: Shows vulnerability and insecurity, seeking help from Kushida Kikyo. Acknowledges her own mistakes and asks for advice.
• Kushida Kikyo: Initially reluctant, she agrees to help Horikita Suzune. She is blunt and honest, scolding Horikita Suzune for her stupidity. She refuses to provide directions, maintaining her role as a mirror.

Significant Themes

• Friendship and trust: Horikita Suzune seeks Kushida Kikyo's help, and Kushida Kikyo agrees despite her initial reluctance.
• Self-awareness: Horikita Suzune seeks to understand herself better by using Kushida Kikyo as a mirror.
• Honesty and bluntness: Kushida Kikyo is honest about her thoughts and feelings, scolding Horikita Suzune for her mistakes.

Character Interactions

• Horikita Suzune and Kushida Kikyo: They have a candid conversation, with Kushida Kikyo acting as a mirror and scolding Horikita Suzune for her mistakes. Horikita Suzune asks for advice, but Kushida Kikyo refuses to provide directions.

Key Plot Points and Events

• Horikita Suzune records her interactions with Kushida Kikyo using a voice recorder bought from Asakusa Toru.
• She deletes the recording in front of Kushida after realizing she no longer needs it.
• Asakusa Toru eavesdrops on their conversation using a voice recorder connected to his earphones.
• Asakusa tutors Shiranami Chihiro and Shibata Hayate in the library, while Ichinose and Kanzaki are late.

Character Developments

• Horikita Suzune shows cunning by recording her interactions with Kushida.
• Asakusa Toru demonstrates his manipulative nature by eavesdropping on their conversation.
• Shiranami Chihiro shows dedication to her studies under Asakusa's tutelage.

Significant Themes

• Trust and deception, as seen in Horikita's recording of Kushida and Asakusa's eavesdropping.
• The importance of studying and preparation for exams, as shown by Asakusa's tutoring session.

Character Interactions

• Horikita and Kushida's strained friendship, with Horikita growing more suspicious of Kushida.
• Asakusa's manipulation of others, using his charm and intelligence to gain their trust.
• Asakusa's tutoring of Shiranami and Shibata, showing his willingness to help others.

Key Plot Points and Events

• Students from Class D, led by Hirata Yosuke, come to the library to study.
• Sudo Ken and Yamauchi Haruki show unexpected ambition and willingness to study.
• Ike Kanji, initially reluctant, is forced to study by Hirata.
• Sudo Ken shares his realization about the true purpose of the basketball team and his newfound determination to study.

Character Developments

• Sudo Ken: Realizes the futility of his previous pursuits and decides to focus on studying.
• Yamauchi Haruki: Shows a surprising willingness to study, possibly due to Hirata's influence.
• Ike Kanji: Initially reluctant, he eventually starts studying under Hirata's guidance.
• Hirata Yosuke: Shows a more assertive and responsible side, taking the initiative to help his classmates study.
• Asakusa Toru: Observes the situation and considers warning his classmates about their teacher's plans.

Significant Themes

• The importance of self-reflection and reassessing one's priorities.
• The influence of peer pressure and leadership in motivating study habits.
• The consequences of misguided ambition and the importance of setting realistic goals.

Character Interactions

• Sudo Ken and Ike Kanji: Despite their initial reluctance, they start studying together, with Sudo offering advice to Ike.
• Hirata Yosuke and Ike Kanji: Hirata forces Ike to study, showing a more assertive side.
• Asakusa Toru and Shiina Hiyori: They communicate through written notes, with Hiyori asking Asakusa about his thoughts on leaving a message for his favorite author.

Summary of Chapter 81: It's Time to Interrogate Chabashira Sae

Key Plot Points and Events

• The diary entry focuses on exposing the misdeeds of the homeroom teachers at Advanced Nurturing.
• Asakusa Toru ranks the teachers based on their unethical behavior, with Chabashira Sae (Rotten Drunkard Lady) being the second worst.
• He warns the students to be cautious if they encounter Chabashira Sae, as she would sacrifice her morals and use underhanded tactics to harm her best friend.

Character Developments

• Asakusa Toru shows his disdain for Chabashira Sae's unethical behavior and lack of professionalism.
• Chabashira Sae is portrayed as selfish, promiscuous, and willing to sacrifice her morals to harm her best friend.

Significant Themes

• The corruption and unethical behavior of teachers at Advanced Nurturing.
• The consequences of running into Chabashira Sae for the students.

Character Interactions

• Asakusa Toru's diary entry serves as a warning to the students about Chabashira Sae's true nature.
• There's no direct interaction between characters in this diary entry.

Summary

Key Plot Points and Events

• The narrator criticizes and summarizes Chabashira Sae's past and present, highlighting her incompetence as a teacher.
• Chabashira Sae, as a student, failed to help her class reach Class A due to her selfish decision during a special exam, leading to her class's expulsion.
• As a teacher, she has a fixation on leading Class D to Class A but provides no guidance to her students.

Character Developments

• Chabashira Sae is portrayed as an incompetent teacher who is more concerned with her personal goals than her students' success.
• The narrator, Asakusa Toru, is shown to be critical and judgmental, with a strong opinion about Chabashira Sae's teaching methods.

Significant Themes

• The theme of personal responsibility and its consequences is explored through Chabashira Sae's past actions and their impact on her class.
• The narrator's criticism highlights the theme of incompetence and its effects on others.

Character Interactions

• The narrator interacts with Chabashira Sae indirectly through his diary entries, expressing his frustration and disapproval of her teaching methods.
• There is no direct interaction between the narrator and other characters in this chapter.

Key Plot Points and Events

• Asakusa Toru obtains the skill 'Precision Throw' after days of practice.
• Horikita Suzune and Kushida Kikyo discuss the Diary's revelations about Chabashira Sae.
• Sakayanagi Arisu continues to read the Diary daily, focusing on the new exposé about their homeroom teachers.

Character Developments

• Asakusa Toru gains a new skill and expresses dissatisfaction at not obtaining it earlier.
• Horikita Suzune questions her trust in the Diary and decides to be more discerning.
• Kushida Kikyo expresses frustration with Horikita Suzune's naivety and decides to do nothing about the Diary's revelations.
• Sakayanagi Arisu remains determined to clear her name and takes the Diary's new exposé seriously.

Significant Themes

• The Diary's influence on characters' decisions and actions.
• The struggle between trust and skepticism regarding the Diary's information.
• The consequences of the Diary's revelations on characters' reputations and relationships.

Character Interactions

• Horikita Suzune and Kushida Kikyo discuss their differing views on the Diary's revelations.
• Sakayanagi Arisu continues to read the Diary alone, focusing on the new exposé.

Key Plot Points and Events

• Sakayanagi Arisu reads the diary, revealing details about their homeroom teacher, Mashima Tomoya, and other teachers' pasts.
• News spreads on a message board about a teacher who always looks displeased and seems to hold grudges against students.
• Students in Class A ask Hoshinomiya Chie about her relationship with Chabashira Sae, hinting at the rumors on the message board.

Character Developments

• Sakayanagi Arisu learns about her teachers' pasts and begins to see the school and its teachers in a new light.
• Hoshinomiya Chie shows her affectionate side towards students but is defensive when asked about her relationship with Chabashira Sae.

Significant Themes

• The power dynamics between students and teachers, and the impact of past events on present relationships.
• The spread of rumors and gossip within the school, and the students' curiosity about their teachers' lives.

Character Interactions

• Sakayanagi Arisu interacts with the diary, learning about her teachers.
• Students in Class A interact with Hoshinomiya Chie, asking her about her relationship with Chabashira Sae.
• Asakusa Toru and Hoshinomiya Chie have a light-hearted exchange about nicknames and familiarity.

Summary

Key Plot Points and Events

• Hoshinomiya Chie, a teacher, admits to being a former student of Class D and nearly reaching Class A, confirming rumors circulating on the school message board.
• She encourages her current Class 1-D students to climb up to Class A and step on Class D (her former class) hard.
• The atmosphere in Class D has improved due to the impact of the 0-point Behavioral Norms Exam and the midterm exams, with most students taking the lectures seriously.
• Yamauchi Haruki's situation has improved with Hirata Yosuke's help, and he's no longer disrupting classes.
• Ike Kanji, unable to resist his curiosity, starts a gossip session during class by asking Yamauchi Haruki about the rumors on the message board.

Character Developments

• Hoshinomiya Chie: She's shown to be mischievous and enjoys causing trouble, especially when it involves her former classmate and rival, Chabashira Sae.
• Yamauchi Haruki: He's more focused on his studies now, thanks to Hirata Yosuke's help.
• Ike Kanji: He's eager for gossip and excitement, as shown by his eagerness to discuss the rumors during class.

Significant Themes

• The rivalry between Class D and Class A, and the students' desire to improve their class's ranking.
• The impact of the 0-point Behavioral Norms Exam on the students' attitudes and behavior.
• The power of friendship and camaraderie, as seen in Hirata Yosuke's help for Yamauchi Haruki.

Character Interactions

• Hoshinomiya Chie interacts with her students, encouraging them to climb up the class rankings while subtly urging them to step on her former class.
• Ike Kanji interacts with Yamauchi Haruki, starting a gossip session during class.
• Hirata Yosuke continues to help Yamauchi Haruki, showing his commitment to their friendship and the class's success.

Key Plot Points and Events

• Students discuss Chabashira Sae's past as a Class D student.
• Hirata Yosuke scolds Yamauchi Haruki and Ike Kanji for passing notes.
• Koenji Rokusuke encourages class discussion about Chabashira Sae.
• Class D students argue about responsibility for their zero score.
• Hirata Yosuke and Karuizawa Kei attempt to maintain class order.
• Ayanokoji Kiyotaka prods Horikita Suzune to defend herself.
• Chabashira Sae enters the classroom during the commotion.

Character Developments

• Yamauchi Haruki and Ike Kanji show immaturity and disrespect towards Chabashira Sae.
• Hirata Yosuke demonstrates leadership and responsibility but struggles to control the class.
• Koenji Rokusuke exhibits impulsiveness and disregard for consequences.
• Horikita Suzune shows reluctance to engage in conflict or defend herself.
• Chabashira Sae remains composed and unemotional despite the rumors about her past.

Significant Themes

• The consequences of gossip and rumors.
• The struggle for leadership and control within the class.
• The tension between individual interests and group harmony.
• The role of the teacher in maintaining order and guiding students.

Character Interactions

• Yamauchi Haruki and Ike Kanji pass notes and discuss Chabashira Sae.
• Hirata Yosuke scolds Yamauchi Haruki and Ike Kanji for passing notes.
• Koenji Rokusuke encourages class discussion about Chabashira Sae.
• Ayanokoji Kiyotaka prods Horikita Suzune to defend herself.
• Karuizawa Kei and Wang Meiyu attempt to smooth over the class's arguments.
• Chabashira Sae confronts the class about their discussion of her past.

Key Plot Points and Events

• Chabashira Sae reveals her past as a Class D student to her current students.
• Students question Chabashira about her role in the previous Unanimous Special Exam, causing her to faint.

Character Developments

• Chabashira Sae: Struggles with her past and the students' accusations, leading to a fainting spell.
• Hirata Yosuke: Tries to maintain order in the class and takes charge when Chabashira faints.
• Students of Class D: Express their frustration and questions about Chabashira's past and her role in their class's failures.

Significant Themes

• The burden of the past and its impact on the present.
• The struggle for unity and leadership within Class D.
• The consequences of truth-telling and its potential repercussions.

Character Interactions

• Chabashira Sae and the students of Class D: Tension and conflict arise as students question Chabashira about her past.
• Hirata Yosuke and the students: Hirata tries to maintain order and calm the students after Chabashira's fainting spell.
• Students of Class D: Students express their anxiety and unease about Chabashira's condition and the potential consequences of their actions.

Key Plot Points and Events

• Students, including Kushida Kikyo, leave the classroom due to the tense atmosphere.
• Kushida discovers an unlocked rooftop door and decides to use it as a private space to vent her emotions.
• Asakusa Toru finds Kushida on the rooftop, venting her true feelings.

Character Developments

• Kushida Kikyo: Reveals her true, aggressive nature when she believes she's alone. She's meticulous, calculating, and desperate to maintain her public image.
• Asakusa Toru: Shows no reaction upon seeing Kushida's true nature, indicating he's not easily shocked or phased.

Significant Themes

• Masks and True Selves: Both Kushida and Asakusa wear masks to present different personas to the public. Kushida's mask slips, while Asakusa's remains firmly in place.
• Safety and Security: Kushida seeks a safe space to vent her emotions, but her sense of security is shattered when she's caught by Asakusa.

Character Interactions

• Kushida and Asakusa: Their interaction is tense and silent, with Kushida panicking and Asakusa remaining calm. Their dynamic sets the stage for potential future blackmail or manipulation by Kushida.

Summary

Key Plot Points and Events

• Asakusa Toru finds Kushida Kikyo on the rooftop, who confesses to knowing he has the Diary Copy.
• Kushida Kikyo tries to blackmail Asakusa by threatening to spread rumors about him assaulting her.
• Asakusa Toru, instead of backing down, threatens Kushida, asking if she understands the implications of her actions.
• He takes her Personal Terminal and asks if she knows what a sex crime signifies for a man.

Character Developments

• Asakusa Toru shows his aggressive and manipulative side, using Kushida's own tactics against her.
• Kushida Kikyo, for the first time, experiences genuine fear and vulnerability, realizing the danger she's in.

Significant Themes

• Power dynamics and manipulation
• The consequences of one's actions
• The disparity between logic and emotions

Character Interactions

• Asakusa Toru and Kushida Kikyo's interaction is tense and threatening, with Asakusa using Kushida's own tactics against her.
• Asakusa's calm and calculated demeanor contrasts with Kushida's growing panic and fear.

Key Plot Points and Events

• Asakura Toru corners Kushida Kikyo on the rooftop and threatens her, enjoying her desperation and fear.
• He stops short of raping her but wipes his hand on her clothes and says, "Thanks for the meal."
• Kushida Kikyo recovers her terminal and considers calling the police but decides against it.
• Asakura Toru plays a recording of Kushida Kikyo cursing and threatening him, revealing he has multiple recorders.
• Kushida Kikyo prostrates herself in a Dogeza, apologizing to Asakura Toru.

Character Developments

• Asakura Toru: Shows his sadistic pleasure in manipulating and frightening Kushida Kikyo, but stops short of rape. He's calculating and enjoys playing mind games.
• Kushida Kikyo: Initially confident, she becomes desperate and frightened as Asakura Toru corners her. She's willing to do anything to avoid being raped, including apologizing sincerely.

Significant Themes

• Power dynamics and manipulation.
• Fear and desperation.
• The consequences of one's actions.

Character Interactions

• Asakura Toru and Kushida Kikyo: Their interaction is tense and manipulative, with Asakura Toru enjoying Kushida Kikyo's fear and desperation. Kushida Kikyo, initially confident, becomes submissive and apologetic to avoid further harm.

Key Plot Points and Events

• Kushida Kikyo is forced to perform a dogeza by Asakusa Toru, who records it.
• She agrees to have lunch with him at a family restaurant.
• Kushida Kikyo asks Asakusa Toru what it would take for him to let her go.

Character Developments

• Kushida Kikyo: Becomes more desperate and irrational due to her situation, but later regains some composure.
• Asakusa Toru: Shows his manipulative and calculating nature, enjoying the power he holds over Kushida Kikyo.

Significant Themes

• Manipulation and power dynamics: Asakusa Toru uses his leverage over Kushida Kikyo to control her actions.
• Consequences of actions: Kushida Kikyo faces the repercussions of her past deeds and words.

Character Interactions

• Asakusa Toru and Kushida Kikyo: Their dynamic is tense and manipulative, with Asakusa Toru holding all the power. Kushida Kikyo tries to maintain some semblance of control but is mostly at his mercy.