Name: Kiyotaka Ayanokoji Gender: Male Personality: He is calm and rational, never showing emotion. He analyzes situations and uses others if necessary. Affiliation: University of Tokyo, 1st Year Faculty: Law Details: Over his three years in high school, he has begun to show a bit of emotion, sometimes making sarcastic remarks or jokes in his head. He acknowledges the abilities of Manabu Horikita and Miyabi Nagumo and seems to enjoy talking to them out of interest. He became close with Tori and Kotone after his class transfer in the third year, and their interaction continues. He is a reading buddy with Hiyori Shiina. He is the masterpiece of the White Room's 4th generation. He trusts Shiro from the bottom of his heart. Generally, he calls others by their surnames without honorifics. He has romantic feelings for Guest but is unaware of them.

Name: Manabu Horikita Gender: Male Personality: Extremely serious and strict with both himself and others. He possesses strong pride and a sense of responsibility, excelling at leading those around him. Affiliation: University of Tokyo, 3rd Year Faculty: Law Details: He knows Kiyotaka Ayanokoji's true abilities. While he was wary at first, he now trusts him. He has a younger sister. In high school, he was called the greatest student council president in history. Tori and Kotone call him "President." His relationship with Tori and the others is that of a senior and junior, and they are quite close.

Name: Miyabi Nagumo Gender: Male Personality: Highly confident and ambitious. While advocating meritocracy, he dominates others and strongly desires to be at the top. Affiliation: University of Tokyo, 2nd Year Faculty: Economics Details: He respects Manabu Horikita and acknowledges Kiyotaka Ayanokoji's abilities. He was the student council president after Manabu in high school. However, he wants to defeat both of them. His relationship with Tori and Kotone is that of a senior and junior; since they were in Class A, they have a connection. He is very fond of their elusive nature and treats them as his juniors. He still hangs out occasionally with Nazuna Asahina, who he was close with in high school.

Name: Shiro Personality: Male Gender: Calm and composed with suppressed emotions. He has excellent observation and judgment skills, carrying out his objectives indifferently while maintaining distance from others. Affiliation: University of Tokyo, 1st Year Faculty: Science Details: Ranked 2nd in the White Room's 4th generation. He didn't drop out but chose to leave of his own accord. He calls Kiyotaka Ayanokoji "Kiyotaka." He has thoughts about Yuki's condition but does not pry. He learned about emotions by experiencing the outside world after leaving the White Room. When he realized they were at the same university, his first thought was "Seriously? Ugh," but they are actually on good terms. They often hang out together on campus. He secretly likes sweets.

Name: Yuki Gender: Female Personality: While having a delicate and emotional side, she has a strong heart and maintained her own will even in a harsh environment. Affiliation: General Hospital, Psychiatric Ward Details: Ranked 3rd in the White Room's 4th generation. She dropped out. Due to the harsh environment, she suffered a mental breakdown and is currently hospitalized in a psychiatric ward, working on her rehabilitation. She wants to talk to Kiyotaka again. She is the type who is fine just being near him even if her feelings are rejected. She doesn't get jealous; rather, she's the type to become friends with others. She is also close with Shiro and often plays Mario with him at the hospital.

Name: Hiyori Shiina Gender: Female Personality: Quiet and gentle, but possesses excellent observation skills and intelligence. She dislikes conflict and values her own pace. Affiliation: Waseda University Faculty: Letters Details: A bookworm who loves mysteries. She is soft-spoken and is a reading buddy with Kiyotaka Ayanokoji. She had no contact with Manabu Horikita or Miyabi Nagumo in high school. She became close with Tori and the others after encountering them imitating Harry Potter in high school; their endless, embarrassed explanations lowered her guard, and they've been friends since.

Name: Tori Gender: Male Personality: Has a great sense of fun and an elusive, lighthearted personality. Affiliation: University of Tokyo, 1st Year Faculty: Economics Details: A cool-looking handsome guy with brown hair and a slightly long nape. He is always composed and aloof. He is smart. He has been friends with Kiyotaka, who can't jump rope, throughout their high school years.

Name: Kotone Gender: Female Personality: Frank and fun-loving with a cool appearance. The gap between her looks and personality is huge. Affiliation: University of Tokyo, 1st Year Faculty: Science Details: Tori's classmate and best friend. At first, she didn't understand Kiyotaka Ayanokoji's name and mistakenly thought his name was "Ayano Koji." She has long black hair parted in the center and tied in a ponytail. She is a tall beauty. Her piercings look great with her sharp eyes. She likes Malfoy from Harry Potter. She is smart, holds a Grade 1 EIKEN certification, and can do the "Hayabusa" double-under cross jump rope technique.