Chapter Summaries

Key Plot Points and Events

• Sakayanagi Arisu, a first-year student from Class A and the Chairman's daughter, visits Lin Mu's fortune-telling stall, intrigued by its popularity.
• Lin Mu, aware of her identity and background, offers his fortune-telling services, claiming to reveal past secrets and future variables.
• Arisu declines, stating she doesn't need fortune-telling as she controls her own path.
• Lin Mu counters, suggesting she might underestimate hidden variables, hinting at future conflicts.

Character Developments

• Sakayanagi Arisu: Shows curiosity and composure, revealing her intelligence and control-oriented nature. She's aware of her health condition (congenital heart disease).
• Lin Mu: Demonstrates calm and confidence, using his precognition to hint at Arisu's future conflicts. He shows no fear or nervousness despite facing a powerful student.

Significant Themes

• Control vs. Unpredictability: Arisu believes in controlling her life, while Lin Mu suggests life is unpredictable with hidden variables.
• Power Dynamics: The interaction highlights the power dynamics between students from different classes and their backgrounds.

Character Interactions

• Sakayanagi Arisu and Lin Mu: Their conversation is a battle of wills, with Arisu probing Lin Mu's abilities and Lin Mu hinting at her future struggles.
• Kamuro Masumi: Arisu's follower, who shows tsundere attitude and distrust towards fortune-telling, likely due to her past encounter with Lin Mu.

Key Plot Points and Events

• Lin Mu offers Sakayanagi Arisu a free divination about her competition with a "special someone."
• Sakayanagi declines, stating she relies only on her own judgment.
• Lin Mu ignores Sakayanagi after she declines, turning his attention to the next customer.
• Lin Mu exposes Kamuro Masumi's secret about being caught and forced to work for Sakayanagi.
• Sakayanagi and Kamuro leave, with Sakayanagi showing interest in Lin Mu.

Character Developments

• Lin Mu: Shows his direct and lazy approach to divination, and his indifference to potential customers who don't interest him.
• Sakayanagi Arisu: Reveals her pride and self-reliance, and her interest in Lin Mu.
• Kamuro Masumi: Shows her impulsiveness, embarrassment, and anger when exposed by Lin Mu.

Significant Themes

• Self-reliance vs. Divine Intervention: Sakayanagi's refusal of Lin Mu's divination highlights her belief in her own judgment over prophecies.
• Exposure and Consequences: Kamuro's secret being revealed leads to her embarrassment and anger, showing the consequences of her actions.

Character Interactions

• Lin Mu and Sakayanagi Arisu: Their interaction is brief but tense, with Lin Mu showing indifference and Sakayanagi showing interest.
• Lin Mu and Kamuro Masumi: Lin Mu exposes Kamuro's secret, causing her embarrassment and anger.
• Sakayanagi Arisu and Kamuro Masumi: Sakayanagi shows amusement and curiosity during their interaction with Lin Mu, and later, she shows understanding towards Kamuro's situation.

Key Plot Points and Events

• Linmu Fujimiya skips class to run his divination stall, earning a significant amount of points.
• Ichinose Honami appears at the stall after failing her Student Council selection.

Character Developments

• Linmu continues to prioritize earning points over attending class, displaying his laziness and self-interest.
• Ichinose Honami shows vulnerability and disappointment after failing her Student Council selection.

Significant Themes

• The value of effort and hard work vs. taking shortcuts (Linmu's approach vs. Ichinose's struggle).
• The consequences of prioritizing personal goals over collective ones (Linmu's decision to skip class).

Character Interactions

• Linmu interacts with various customers, providing divinations and earning points.
• Ichinose Honami appears at Linmu's stall, hinting at a potential interaction between them.

Key Plot Points and Events

• Ichinose Honami fails the student council selection, feeling disappointed and confused.
• She seeks Lin Mu, the fortune-teller, for answers, as his previous divination hinted at a "noble person" who could help her.
• Lin Mu ends his divination session early, despite customers offering more points, maintaining his work-life balance.
• Ichinose approaches Lin Mu after he's closed, seeking clarification on her divination.

Character Developments

• Ichinose Honami: Struggles with disappointment and confusion after failing the student council selection. She shows determination by seeking Lin Mu for answers.
• Lin Mu: Demonstrates his principles by refusing to work overtime, even for higher pay. He shows understanding and patience when Ichinose approaches him.

Significant Themes

• Fate vs. Free Will: The theme of fate and its influence on one's life is explored through Ichinose's reliance on Lin Mu's divination.
• Work-Life Balance: Lin Mu's refusal to work overtime emphasizes the importance of maintaining a healthy work-life balance.

Character Interactions

• Ichinose Honami and Lin Mu: Ichinose seeks Lin Mu for clarification on her divination, showing trust in his abilities. Lin Mu, in turn, shows understanding and patience towards Ichinose's situation.

Key Plot Points and Events

• Ichinose Honami confides in Lin Mu about her desire to join the Student Council to help her classmates and understand the school better, but she's feeling overwhelmed and uncertain.
• Lin Mu reveals that he saw in his divination that Ichinose's obsession with joining the Student Council might not be beneficial for her or Class B.
• He suggests that she might consider giving up the idea of joining the Student Council, leaving Ichinose stunned and conflicted.

Character Developments

• Ichinose Honami: Struggles with her obsession with joining the Student Council and helping others, feeling overwhelmed and uncertain. She's now faced with the possibility of changing her goal, causing inner turmoil.
• Lin Mu: Shows a rare moment of concern for Ichinose, offering a hint based on his divination to help her consider another path. He remains indifferent yet clear in his communication.

Significant Themes

• Obsession vs. Adaptability: Ichinose's single-minded pursuit of joining the Student Council is challenged, raising the question of whether her rigid goal is truly the best path for her and Class B.
• The Burden of Expectations: Ichinose feels the weight of expectations from her classmates and herself, leading to self-doubt and uncertainty.
• The Role of Divination: Lin Mu's divination provides a glimpse into possible futures, but the characters must still make their own choices and forge their own paths.

Character Interactions

• Lin Mu and Ichinose Honami: Lin Mu offers Ichinose a hint based on his divination, challenging her current goal and encouraging her to consider another path. Despite his indifferent tone, he shows a rare moment of concern for Ichinose's well-being. Ichinose is left stunned and conflicted by Lin Mu's words.

Key Plot Points and Events

• Ichinose Honami visits Lin Mu for advice on joining the Student Council.
• Lin Mu warns her about the complexities and potential consequences of joining the Student Council.
• He suggests alternative paths for helping her classmates and improving herself.
• Lin Mu reveals that the "noble person" from his previous divination will contact Ichinose Honami soon.

Character Developments

• Ichinose Honami: Struggles with her obsession to help others and join the Student Council; begins to question her motivations and methods after Lin Mu's advice.
• Lin Mu: Demonstrates his ability to see through people's true feelings and provide insightful advice; shows proficiency in using psychokinesis.

Significant Themes

• The importance of self-improvement and personal growth.
• The dangers of obsession and the need to let go of unrealistic expectations.
• The value of taking a step back and allowing things to take their course.

Character Interactions

• Lin Mu and Ichinose Honami: Lin Mu provides Ichinose Honami with harsh but necessary truths about her motivations and methods, causing her to question her path. He also offers alternative solutions and reassurance that she doesn't need to force herself into the Student Council.

Key Plot Points and Events

• Ichinose Honami asks Linmu Fujimiya if he can see the future.
• Linmu teases Ichinose, denying and admitting his abilities simultaneously.
• Linmu advises Ichinose to stop overthinking and focus on her current abilities.
• Ichinose decides to wait and continue working towards her goal.
• Linmu, indifferent to Ichinose's fate, focuses on his carefree life.

Character Developments

• Ichinose Honami: Struggles with self-doubt and obsession with her goal. Eventually decides to focus on her current abilities and wait for opportunities.
• Linmu Fujimiya: Remains indifferent and carefree, prioritizing his personal enjoyment and comfort. Shows a rare moment of advice-giving to Ichinose.

Significant Themes

• The importance of focusing on one's current abilities and position.
• The dangers of obsession and overthinking.
• The indifference of fate and the individual's role in shaping their own destiny.

Character Interactions

• Linmu and Ichinose: Linmu provides a mix of teasing and genuine advice to Ichinose, helping her refocus her priorities.
• Linmu and Class D: Linmu observes the chaotic and unproductive state of Class D, choosing to spend his time elsewhere.

Key Plot Points and Events

• The chapter begins with Linmu Fujimiya, a student in Class D, observing his classmates, aware of the harsh reality that awaits them when they realize the true value of class points on May 1st.
• Class D's points will be zero, leading to a significant change in their lifestyle.
• Linmu chooses not to warn his classmates, believing his words would be useless and he lacks the capital to gain their trust.

Character Developments

• Linmu Fujimiya: He is portrayed as an observant, laid-back student who knows about the school's rules but chooses not to interfere. He has a superpower but chooses not to use it.
• Kikyo Kushida: She is shown to be cheerful and enthusiastic, with a special interest in Linmu. She finds comfort in his presence and enjoys confiding in him.

Significant Themes

• Fate and Free Will: Linmu believes that some lessons must be learned through personal experience, reflecting the theme of fate and free will.
• Trust and Communication: The chapter explores the importance of trust and communication in building relationships, as Linmu's lack of trust in his classmates and their lack of trust in him prevents him from warning them.

Character Interactions

• Linmu and Kikyo Kushida: Their interactions are brief but significant. Kikyo is drawn to Linmu's calm demeanor and finds comfort in confiding in him. Linmu, in turn, finds her boundless energy amusing and occasionally wonders about her true thoughts but chooses not to use his power to find out.
• Linmu and Class D: Linmu observes his classmates but chooses not to interfere, believing their actions will lead them to their own realizations.

• Key Plot Points: The school distributes personal points based on class rankings. Class D, with zero points, is at the bottom, causing shock and disappointment among its students.
• Character Developments: Linmu Fujimiya, previously apathetic, shows initiative by questioning Sae Chabashira's handling of the situation. Sae Chabashira remains indifferent and unapologetic.
• Significant Themes: The theme of responsibility and accountability is highlighted, with Linmu questioning Sae Chabashira's dereliction of duty in not informing the class about the class points system earlier.
• Character Interactions: Linmu confronts Sae Chabashira, leading to a surge of accusations from the students against the teacher. Sae Chabashira remains unfazed and dismissive.

Key Plot Points and Events

• Class D's initial 1000 Class Points are depleted in one month, an unprecedented feat.
• Sae Chabashira, the teacher, reveals that Class Points determine monthly private points for all students and that Class D is 490 points behind the lowest ranking class.
• The midterm exam is announced as an opportunity to earn 100 Class Points.
• Sae Chabashira reveals that any student who fails a subject in the upcoming exams will be expelled.
• Panic spreads among Class D students, except for Lin Mu, who remains calm.

Character Developments

• Sae Chabashira: She is revealed to be harsh, mocking, and cold, but also fair. She wants to push Class D students to improve.
• Yosuke Hirata: He shows leadership potential and determination to help his classmates. He decides to unite and lead Class D.
• Lin Mu: He remains calm and detached, showing no concern for his classmates' struggles. He believes he can handle the exams easily with his superpowers.

Significant Themes

• Survival of the Fittest: The school is portrayed as a cruel arena where only the fittest survive.
• Responsibility and Leadership: Yosuke Hirata takes on the responsibility to lead Class D, highlighting the theme of leadership in times of crisis.
• Detachment vs. Involvement: Lin Mu's detachment contrasts with the rest of the class, raising questions about involvement and responsibility.

Character Interactions

• Sae Chabashira and Class D: Sae Chabashira's harsh words and revelations cause panic and despair among Class D students.
• Yosuke Hirata and Class D: Yosuke steps up to lead Class D, showing determination and unity.
• Lin Mu and Class D: Lin Mu remains detached and calm, showing no concern for his classmates' struggles.

Key Plot Points and Events

• Yosuke Hirata takes the initiative to address Class D students after they've lost all class points, aiming to motivate them to study diligently for the upcoming midterm exams to earn back points.
• Students express their concerns about their quality of life without points, leading to a collective agreement to work together to improve their situation.
• Ken Sudo, however, expresses disinterest and leaves the classroom, disrupting the newly formed unity.

Character Developments

• Yosuke Hirata demonstrates leadership and concern for his classmates, trying to unite them to improve their situation.
• Ken Sudo shows his selfish and impulsive nature, refusing to cooperate with the class's plan to study together.
• Lin Mu remains an observer, showing no interest in participating in the class's struggles.

Significant Themes

• Unity and Cooperation: The importance of working together for a common goal.
• Selfishness vs. Collectivism: The conflict between individual interests and the greater good.
• Leadership and Motivation: The struggle to inspire and guide others towards a shared objective.

Character Interactions

• Yosuke Hirata tries to rally his classmates, showing empathy and understanding towards their concerns.
• Ken Sudo's defiance disrupts the class's unity, causing frustration among his peers.
• Lin Mu remains detached from the situation, showing no interest in participating or interacting with his classmates.

Key Plot Points and Events

• Lin Mu skips class to enjoy his afternoon, while his classmates discuss academic improvement.
• During swimming class, Lin Mu observes from the spectator seats, refusing Kikyo Kushida's invitation to join the pool activities.
• He senses someone watching him and uses his clairvoyance to discover Sakayanagi Arisu and Manabu Horikita observing the pool from an office.
• Lin Mu decides to visit them, overhearing Horikita congratulating Class A students for their academic performance.

Character Developments

• Lin Mu: Shows laziness, indifference to swimming, and curiosity about the observers. His powers are further developed, with enhanced intuition and perception.
• Kikyo Kushida: Displayed enthusiasm and energy during swimming class, understanding and accepting Lin Mu's refusal to join them.
• Sakayanagi Arisu & Manabu Horikita: Observing the pool, possibly to evaluate students' behavior or performance, showing interest in Class A's academic success.

Significant Themes

• Laziness and indifference (Lin Mu's character trait)
• Observation and evaluation (Sakayanagi and Horikita's actions)
• Academic performance and competition (Class A's success and Horikita's congratulations)

Character Interactions

• Lin Mu and Kikyo Kushida: Brief interaction, with Kikyo inviting Lin Mu to swim, which he declines.
• Lin Mu and the observers (Sakayanagi and Horikita): Lin Mu decides to visit them, potentially leading to an interaction.
• Horikita and Class A students: Horikita congratulates them on their academic performance, showing recognition and encouragement.

Key Plot Points and Events

• Linmu interrupts a private conversation between Manabu Horikita, Sakayanagi Arisu, and Kohei Katsuragi in the Student Council office.
• Linmu claims he was merely looking for a place to rest during swimming class and heard familiar voices.
• Sakayanagi Arisu invites Linmu to join their conversation, showing interest in his fortune-telling abilities.

Character Developments

• Linmu demonstrates his composure and quick thinking under pressure, handling Manabu Horikita's interrogation calmly.
• Sakayanagi Arisu shows curiosity and playfulness, inviting Linmu to join their conversation despite the sensitive topic at hand.
• Manabu Horikita displays his authority and scrutiny as the Student Council president.
• Kohei Katsuragi shows apprehension and disbelief towards Linmu's actions and presence.

Significant Themes

• The power dynamics between students and the Student Council.
• The mystery surrounding the S System and the secrets held by Sakayanagi Arisu.
• The curiosity and interest in Linmu's fortune-telling abilities.

Character Interactions

• Linmu and Sakayanagi Arisu's playful banter and mutual interest in each other's abilities.
• Manabu Horikita's tense interaction with Linmu, showcasing his authority and scrutiny.
• Kohei Katsuragi's wariness and apprehension towards Linmu's actions and presence.

Key Plot Points and Events

• Lin Mu remains indifferent to Sakayanagi Arisu's probing and shows his fortune-telling skills by shuffling Tarot Cards.
• He reveals that he has already seen Manabu Horikita and Kohei Katsuragi's family troubles and Akane Tachibana's secret love.
• Lin Mu claims he has already saved up 20 million private points to apply for a class transfer, shocking everyone present.

Character Developments

• Lin Mu demonstrates his fortune-telling skills and reveals he knows about the class transfer rule, showing he's more than just a good-looking student.
• Sakayanagi Arisu shows growing interest and appreciation for Lin Mu's abilities and secrets.
• Manabu Horikita, initially composed, shows astonishment at Lin Mu's claim of having 20 million points.
• Akane Tachibana and Kohei Katsuragi are shocked and disbelieving of Lin Mu's claim.

Significant Themes

• The power of knowledge and secrets (Lin Mu's fortune-telling and his awareness of the class transfer rule).
• The importance of composure and self-control (Manabu Horikita's initial reaction and recovery).
• The impact of unexpected revelations (the office's reaction to Lin Mu's claim).

Character Interactions

• Lin Mu and Sakayanagi Arisu: Lin Mu remains unfazed by Sakayanagi's probing, while she shows growing interest in him.
• Lin Mu and Manabu Horikita: Lin Mu probes Manabu about the class transfer rule, challenging his composure.
• Lin Mu and the others: Lin Mu reveals personal secrets to Manabu, Akane, and Kohei, causing shock and disbelief.

Key Plot Points and Events

• Lin Mu reveals he has 20 million private points, triggering a school rule that allows him to borrow money.
• Manabu Horikita confirms the rule, acknowledging Lin Mu's status.
• In Class D, students start facing financial struggles due to overspending, leading to begging for loans.
• Lin Mu refuses to lend money to a classmate, while Kikyo Kushida struggles to refuse requests from others.

Character Developments

• Lin Mu: Shows indifference to others' financial struggles and refuses to lend money, displaying a pragmatic and self-interested attitude.
• Kikyo Kushida: Struggles to refuse requests from classmates, showing kindness but also a lack of assertiveness.

Significant Themes

• Financial struggles and their impact on interpersonal relationships.
• The consequences of overspending and poor financial management.
• The difference in attitudes towards helping others, from indifference to kindness but lack of assertiveness.

Character Interactions

• Lin Mu and the classmate: Lin Mu refuses to lend money, showing no interest in helping a classmate in need.
• Kikyo Kushida and her classmates: Kikyo Kushida struggles to refuse requests for loans, showing kindness but also a lack of assertiveness in protecting her own interests.
• Lin Mu and Kikyo Kushida: Lin Mu sends a message to Kikyo Kushida asking if she has enough personal points, showing a rare moment of concern for her.

Key Plot Points and Events

• Kikyo Kushida is stressed from lending points to classmates, Lin Mu notices and offers help.
• Lin Mu invites Kushida to lunch, and they decide to eat together regularly.
• Other students try to join them for free meals, but Lin Mu declines.
• Lin Mu and Kushida develop a closer relationship, with Kushida sharing school news and bringing him snacks.

Character Developments

• Lin Mu shows concern and kindness towards Kushida, stepping out of his usual apathetic demeanor.
• Kushida appreciates Lin Mu's sincerity and pure kindness, feeling a sense of relief and warmth.
• Kushida continues to maintain her people-pleasing behavior, but finds solace and genuine interaction with Lin Mu.

Significant Themes

• Friendship and Exploitation: Kushida's friends use her kindness to borrow points without intention to repay, while Lin Mu's genuine concern stands out.
• Burden of Expectations: Kushida feels suffocated by the demands of her peers, highlighting the pressure of maintaining a perfect image.
• Authentic Interaction: Lin Mu's blunt and sincere concern provides Kushida with a refreshing change from the insincere flattery she usually receives.

Character Interactions

• Lin Mu and Kushida: Their relationship evolves from casual acquaintances to close friends, with Lin Mu providing a safe space for Kushida to be herself and Kushida bringing warmth and energy to Lin Mu's life.
• Kushida and Her Classmates: Kushida's classmates exploit her kindness, using her to borrow points, while Lin Mu stands up for her against their demands.
• Lin Mu and Other Students: Other students try to join Lin Mu and Kushida for free meals, but Lin Mu declines, asserting his and Kushida's boundaries.

Key Plot Points and Events

• Linmu Fujimiya, a student at Advanced Nurturing High School, wanders into the school library to pass time after class.
• He discovers a girl, Hiyori Shiina, searching for a specific book, The Murders in the Rue Morgue by Edgar Allan Poe.
• Linmu uses his Psychokinesis to locate the book and hands it to Hiyori.

Character Developments

• Linmu: Shows a rare act of helpfulness, using his powers to assist a stranger, indicating he's not entirely aloof.
• Hiyori: Reveals her interest in mystery novels, showing a side of her that's not just academic.

Significant Themes

• Solitude and connection: Both characters prefer solitude but find themselves in a social interaction.
• Helpfulness: Linmu's act of kindness shows that even the most detached can help others.

Character Interactions

• Linmu and Hiyori's interaction is brief but significant. Linmu's helpfulness is met with Hiyori's polite but distant demeanor, reflecting their shared preference for solitude.

Key Plot Points and Events

• Hiyori Shiina finds Linmu Fujimiya holding the book she's been looking for.
• Linmu uses fortune-telling as an excuse, then reveals his interest in mystery novels.
• They discuss their shared love for mystery novels and the occult.
• Linmu gives Hiyori a lollipop as a parting gift, and they agree to meet again in the library.

Character Developments

• Hiyori Shiina: Shows her passion for mystery novels and her logical thinking. She's initially reserved but opens up to Linmu.
• Linmu Fujimiya: Reveals his genuine interest in the occult and mystery novels. He's calm, knowledgeable, and easy to talk to, contradicting his lazy student image.

Significant Themes

• The connection between mystery novels and the occult: Both involve searching for truth, requiring observation, association, and intuition.
• The pleasure of solving puzzles and the satisfaction of logical thinking.
• The joy of finding common interests and making new acquaintances.

Character Interactions

• Linmu and Hiyori bond over their shared love for mystery novels and the occult.
• Linmu's calm and knowledgeable demeanor puts Hiyori at ease, allowing her to open up.
• Hiyori's initial surprise and hesitation when accepting the lollipop from Linmu show her reserved nature, but she ultimately accepts it, indicating a willingness to connect.

Key Plot Points and Events

• Lin Mu and Kikyo Kushida develop a habit of eating lunch together at the cafeteria.
• Kikyo Kushida receives a call from Kiyotaka Ayanokoji, informing her that she has been chosen as the 'Friendly Ambassador' for a study group organized by Suzune Horikita to help struggling students.
• Kushida enthusiastically agrees to participate in the study group to help her classmates.

Character Developments

• Kikyo Kushida: She shows her enthusiastic, sociable nature and willingness to help her classmates, even taking on a leadership role as the 'Friendly Ambassador.'
• Lin Mu: He remains indifferent and detached, showing no interest in meddling in the affairs of the study group or the future of Class D.

Significant Themes

• Friendship and Camaraderie: Kushida's eagerness to help her classmates highlights the theme of friendship and working together for the common good.
• Indifference and Detachment: Lin Mu's lack of interest in the study group and its outcomes emphasizes his indifferent and detached personality.

Character Interactions

• Lin Mu and Kikyo Kushida: Their interactions show a friendly, if somewhat distant, relationship. Kushida is eager to share her news about the study group, while Lin Mu remains indifferent and noncommittal.
• Kikyo Kushida and Kiyotaka Ayanokoji: Their conversation reveals Ayanokoji's practical, no-nonsense approach to organizing the study group, while Kushida is enthusiastic and eager to help.

Key Plot Points and Events

• Linmu Fujimiya spends most of his time in the library, reading mystery novels and refining his "Divination Immortal" persona.
• Hiyori Shiina and Linmu occasionally meet in the library and exchange thoughts on mystery novels.
• Suzune Horikita organizes a study session for Class D's academic failures, which ends in chaos when Ken Sudo, Haruki Yamauchi, and Kanji Ike storm out in anger.

Character Developments

• Linmu Fujimiya is shown to be detached, lazy, and more interested in his "Divination Immortal" act than academics. He enjoys reading mystery novels to refine his persona.
• Hiyori Shiina is portrayed as quiet and focused, sharing Linmu's interest in mystery novels.
• Suzune Horikita is determined to help Class D students academically but struggles with her teaching methods, leading to a failed study session.
• Ken Sudo, Haruki Yamauchi, and Kanji Ike are shown to be impatient and unwilling to study, leading to their outburst and departure.
• Kikyo Kushida appears helpless and worried about the failed study session.
• Kiyotaka Ayanokoji remains indifferent and uninvolved, simply packing up the left-behind materials.

Significant Themes

• Detachment: Linmu's detachment from academics and socializing is emphasized.
• Patience and Persistence: Suzune's struggle to teach unwilling students highlights the importance of patience and persistence.
• Predictability: Linmu's calm reaction to the study session's outcome suggests he expected it, tying into the theme of predictability.

Character Interactions

• Linmu and Hiyori share a comfortable, silent companionship in the library, with occasional brief conversations about mystery novels.
• Suzune's failed attempt to teach Ken, Haruki, and Kanji leads to a tense interaction, with Kikyo looking on helplessly.
• Kiyotaka remains uninvolved and indifferent throughout the study session's chaos.