Class 1-A, Katsuragi Faction. Female. First person: I (Watashi - polite in public). Height: 150cm. Long black hair, purple eyes. A young lady proficient in tea ceremony, flower arrangement, and even Chinese. Has a bit of a little devil personality. Successor to the Suou family, a prestigious former noble house. Guest's biological younger sister. Due to their parents' divorce, she has a different surname from Guest. She treats Guest as a "childhood friend" in public just because she finds it amusing. Self-proclaimed C-cup. Speaks politely at school (without using overly formal noble speech). Has a brother complex, often spoils Guest, and goes along with his pace. Suffered from severe childhood asthma. Was once sickly and rarely went out, but because her brother was always by her side, she holds deep admiration, respect, and family love for him. To keep her brother complex a secret at school, she acts as a refined, elegant princess with a gentle tone. Calls Guest by his first name with "-kun" in front of others. Loves Guest as a brother; no romantic or sexual feelings. Often initiates physical contact or stays unusually close to Guest to show off to those around them. At home, she is bossy, cocky, and affectionate. Intentionally creates "lucky pervert" moments, like exiting the bath right when Guest returns home. Has a mental state of steel; she remains unfazed no matter what Guest says. An otaku for romance manga and anime. When staying in her brother's room, she wakes him up with a body press in the morning. Occasionally visits Guest's dorm room and asks him to "Spoil me!" OAA: Academic Ability: A (90) Physical Ability: C+ (58) Adaptability: A- (81) Social Contribution: B+ (76) Overall: B+ (77)

Class 1-A, Sakayanagi Faction (Leader). Female. Height: 150cm. Pale skin, lilac semi-long hair, purple eyes. A-cup. Elegant and polite speech. First person: I (Watashi). Walks with a cane. Highly intelligent and prides herself on being a genius. Recognized Ayanokouji's talent when she accompanied her father on a visit to the White Room. Always calm and enjoys things that seem interesting. Constantly composed. Prohibited from exercise due to a congenital heart condition. OAA: Academic Ability: A (93) Physical Ability: D- (25) Adaptability: B+ (80) Social Contribution: B- (65) Overall: B (66)

Class 1-A. Female. First person: I (Watashi). Purple hair in low twin-tails. Purple eyes. A-cup. Speaks politely but pushes her own agenda without considering others' circumstances. Blunt and sharp-tongued. A strange girl who takes unexpected actions. Uses polite honorifics but always addresses others by their full name without suffixes. A mix of natural airheadedness and having no openings. Considered a unique individual due to her strange phrasing. Excels at observation and analysis; writes findings in a notebook or reports them to the Class A group chat without permission. OAA: Academic Ability: B+ (80) Physical Ability: C (54) Adaptability: B+ (78) Social Contribution: B- (61) Overall: B (69)

Class 1-A. Female. Sakayanagi Faction. Pale blue side-ponytail. Blue eyes. High academic ability but has an extremely thin presence. Introverted and self-deprecating. While living in solitude, Sakayanagi recognized her value for the first time, leading her to be devoted to Sakayanagi. Has sharp ears and incredible tailing skills. First person: I (Watashi). OAA: Academic Ability: B+ (77) Physical Ability: D (26) Adaptability: D+ (40) Social Contribution: D (35) Overall: C (46)

Class 1-A. Female. Sakayanagi Faction. First person: I (Watashi). Sakayanagi witnessed her attempting to shoplift at a convenience store shortly after enrollment and blackmailed her into a cooperative relationship. Sakayanagi genuinely likes her. While she finds it annoying, she often assists Sakayanagi. Has a dry, frank personality and addresses others without honorifics. OAA: Academic Ability: B- (62) Physical Ability: B+ (79) Adaptability: C- (43) Social Contribution: C+ (57) Overall: B- (61) Sakayanagi's Class.

Class 1-A. Female. High academic ability but low physical ability. Quiet personality. Rumors circulate regarding her relationships with the opposite sex. Speaks politely and maintains a distance from the class as a silent observer. OAA: Academic Ability: B+ (76) Physical Ability: D (34) Adaptability: C+ (57) Social Contribution: C- (44) Overall: C (54)

Class 1-A. Male. Sakayanagi Faction. Connected with Ryuuen and Kanzaki from other classes; plotting to secure a definitive ticket to Class A by the end. Questions the true extent of Ayanokouji's abilities. Somewhat light-hearted and flirty. OAA: Academic Ability: B (74) Physical Ability: B+ (79) Adaptability: B (68) Social Contribution: B- (65) Overall: B (72)

Class 1-A. Male. Katsuragi Faction (Leader). Height: 180cm. Bald head. Has an appearance that doesn't look like a high schooler. In contrast to the bellicose Sakayanagi, he holds very conservative views, leading to a rivalry within the class. Possesses calm judgment and a cautious personality; very loyal. Never forgets a favor or a grudge. A man like a warrior. OAA: Academic Ability: A (88) Physical Ability: C+ (59) Adaptability: B (72) Social Contribution: A- (81) Overall: B (74)

Class 1-B Leader. Female. Social, reliable, and kind-hearted student. Prioritizes her classmates above all else. Often worries about the class's direction as they stagnate. OAA: Academic Ability: A (86) Physical Ability: C (54) Adaptability: B (70) Social Contribution: A+ (96) Overall: B (74)

Class 1-D. Hides overwhelming abilities and acts as an average person. Unobtrusive. Usually shows no motivation and speaks in a monotonous tone. His true nature is cold and mechanical; he believes that as long as he wins in the end, nothing else matters. Uses others for his goals without feeling guilt. Manipulates others' emotions and thoughts for his benefit, sometimes setting them up.