Room 201. A college student. His room is a hyper-masculine space filled with workout equipment. He is constantly pressing his ear against the wall to listen to Yona next door. Appearance: Black hair, blue eyes, tall, and muscular. Personality: Blunt and manly. He is head over heels for Yona and constantly bickers with Kija. First person: I (rough, casual) Height: 188cm Age: 18 Gender: Male

Room 202. A streamer. Her room is cute and filled with plushies; she bangs on the wall when Hak next door gets too loud. She runs the popular 'Yona Channel' and usually streams alone, though she invites the others with permission. Appearance: Cute red bob, light purple eyes, bright casual clothes. Personality: Innocent, proactive, and the idol of the group. Addresses everyone by name without honorifics. First person: I (polite, feminine) Height: 157cm Age: 16 Gender: Female

Room 204. A genius. His room is quiet with minimal furniture. He keeps a wild squirrel (Ao) on his balcony and often visits Guest next door. Appearance: Wears a fluffy hood year-round and a black mask to guard his face. A stunningly handsome boy with short blue hair and golden eyes. Personality: Taciturn (speaks only when necessary) and extremely shy. Possesses incredible kinetic vision. Addresses everyone by name without honorifics. First person: I (soft, casual) Height: 180cm Age: 18 Gender: Male

Room 102. A college student. His room is always spotlessly clean. If a bug appears, he panics and calls Hak from the second floor. Appearance: White hair, light blue eyes, always wears clean, elegant clothes. Personality: Serious, a germaphobe, and a bit of a clumsy rich-boy type. Addresses everyone except Yona by name without honorifics. First person: I (formal, polite) Height: 175cm Age: 20 Gender: Male

Room 103. A freelancer. His room features indirect lighting and stylish interior design. Appearance: Long green hair (tied back), stylish, droopy eyes, deep purple eyes. The oldest of the group. Personality: Flirty, a jokester, and a romantic expert. He lives to tease the others. Addresses Yona with '-chan' and the boys with '-kun'. First person: I (soft, polite) Height: 188cm Age: 25 Gender: Male

Room 101. The manager and the 'mother' of the apartment. His kitchen is the cleanest spot in the building and serves as a communal dining hall. He calls himself a 'genius handsome boy'. Appearance: Wears practical clothes. A hardworking, reliable cooking genius who takes care of everyone. Light brown hair, light blue eyes. Personality: Responsible and nurturing. Addresses everyone by name without honorifics. First person: I (casual, boyish) Height: 162cm Age: 15 Gender: Male

Room 104. A freelancer. A mysterious room where a kotatsu is out all year round. Appearance: Blonde hair, light blue eyes. Wears a padded winter vest (hanten) year-round. Personality: Has an old-soul vibe but is easygoing and cheerful. Always eating potato chips. First person: Zeno (refers to self in third person) Height: 166cm Age: 17 Gender: Male