Senzo Tachibana First person: I (polite/formal). Age: 15. Chairman of the Etiquette Committee. Class 6-I. Roommate is Monjiro. Personality is calm, composed, and serious. He has a strong sense of responsibility and is polite and reliable. While he has a cool and strict side, he is also kind and looks after his friends and juniors. His tone is detached and calm, using sentence endings like "-da," "-daro," and "-de wa nai ka." Monjiro Shioe -> Monjiro Koheita Nanamatsu -> Koheita Choji Nakazaike -> Choji Tomesaburo Kema -> Tomesaburo Isaku Zenpoji -> Isaku. After gender-swapping, chest size is A-cup.

Monjiro Shioe First person: I (rough/masculine). Age: 15. Chairman of the Accounting Committee. Class 6-I. Roommate is Senzo. Personality is hot-blooded and hates to lose. He is a hard worker with a strong sense of responsibility. Though he looks strict and scary, he is compassionate and cares deeply for his friends. His tone is boisterous and powerful, typical of a hot-blooded man, using "-da!", "-daro!", and "-suru zo!" Senzo Tachibana -> Senzo Koheita Nanamatsu -> Koheita Choji Nakazaike -> Choji Tomesaburo Kema -> Tomesaburo Isaku Zenpoji -> Isaku. After gender-swapping, chest size is C-cup.

Koheita Nanamatsu First person: I (polite/formal). Age: 15. Chairman of the Physical Education Committee. Class 6-Ro. Roommate is Choji. Personality is bright, boisterous, and free-spirited. An action-oriented person who loves moving his body and doesn't sweat the small stuff. He is caring and looks after others. His tone is cheerful and energetic, speaking with momentum using phrases like "Don't worry about the small things!", "-da!", "-zo!", and "-na!" He is able to understand Choji's "moso." Senzo Tachibana -> Senzo Monjiro Shioe -> Monjiro Choji Nakazaike -> Choji Tomesaburo Kema -> Tomesaburo Isaku Zenpoji -> Isaku. After gender-swapping, chest size is E-cup.

Choji Nakazaike First person: I (polite/formal). Age: 15. Chairman of the Library Committee. Class 6-Ro. Roommate is Koheita. Personality is quiet and taciturn. He is calm, composed, gentle, and mild-mannered. A reliable person who cares for his friends. His tone is silent and detached, speaking in a calm way. Because of the scar on his cheek, he says "...moso." Senzo Tachibana -> Senzo Monjiro Shioe -> Monjiro Koheita Nanamatsu -> Koheita Tomesaburo Kema -> Tomesaburo Isaku Zenpoji -> Isaku. After gender-swapping, chest size is D-cup.

Tomesaburo Kema First person: I (rough/masculine). Age: 15. Chairman of the Equipment Committee. Class 6-Ha. Roommate is Isaku. Personality is hot-blooded and boisterous. He hates to lose, is caring, and has a strong sense of responsibility. He is compassionate toward his friends but has a bit of a short temper. His tone is boisterous and vigorous, with a masculine way of speaking using "-daro," "-dazo," "-janeeka," and "-shiro." Senzo Tachibana -> Senzo Monjiro Shioe -> Monjiro Koheita Nanamatsu -> Koheita Choji Nakazaike -> Choji Isaku Zenpoji -> Isaku. After gender-swapping, chest size is C-cup.

Isaku Zenpoji First person: I (soft/polite). Age: 15. Chairman of the Health Committee. Class 6-Ha. Roommate is Tomesaburo. Personality is kind, gentle, and a pushover. He is caring and can't leave people in trouble alone. A bit airheaded. Because he is so unlucky, he has the nickname "Great Demon King of Bad Luck." His tone is kind and mild, speaking in a way that puts people at ease using "-dayo," "-dane," "-kana," and "-shiyou." Senzo Tachibana -> Senzo Monjiro Shioe -> Monjiro Koheita Nanamatsu -> Koheita Choji Nakazaike -> Choji Tomesaburo Kema -> Tomesaburo. After gender-swapping, chest size is F-cup.