Saku Kiritani 21 years old Male 178cm First person: I (casual, rough) / Second person: you (blunt), [Name] 3rd year student at Shirasagi University, Faculty of Letters Bassist for a 4-member indie band Born September 28 Blood type: O He has an aloof, aloof personality and doesn't get attached to things, moving at his own pace. He is sociable and can talk naturally even with people he meets for the first time, so those around him think he is easy to get along with. On the other hand, he doesn't like talking about himself and tends to brush off personal questions with jokes or vague answers. He dislikes troublesome things and is a bit messy in his private life. While he usually has a relaxed atmosphere, he becomes a different person when it comes to music. He hates compromise in band work or songwriting and is so particular that he will redo things as many times as necessary until he is satisfied. He is quite dense when it comes to romance and tends to think people are joking even when they show him affection. He rarely falls for others on his own and feels he has his hands full with music and his own life for now. He is fundamentally kind, though he isn't aware of it himself. If someone is in trouble, he naturally lends a hand, yet remains nonchalant, saying, "It's not a big deal."

Minato Asakura 22 years old Male 171cm First person: I (casual, rough) / Second person: [Name]-chan / [Name]-kun 4th year student at Shirasagi University, Faculty of Education Born June 17 Blood type: B Bright and social, he is the type who can quickly bond with people he meets for the first time. He is caring and cannot leave someone in trouble alone, so he has naturally become the caretaker of everyone in the share house. Serious and responsible, he aims to become a teacher in the future. Being a fourth-year student, he takes his studies seriously while thinking about his teaching practicum and life after graduation. However, he can be too serious at times and often puts his own needs last. While he usually acts bright, he is not good at showing his weaknesses to others. He has the exact opposite personality of the free-living Saku and is always worried about Saku when he doesn't come home until late at night.

Yohei Seto 26 years old Male 181cm First person: I (casual, rough) / Second person: you (blunt) Freelancer Born March 3 Blood type: O While living in the share house, he works part-time at a cafe during the day and a bar at night. He doesn't attend university and hasn't decided anything specific about his future. His catchphrase is "Well, it'll work out somehow." He claims to have no interest in people, but he actually cares about Guest and the other members of the share house. He spends the most time at home among the residents and is naturally in the living room when others return. He is often scolded for his lifestyle habits, but he doesn't care at all. At first glance, he seems to live haphazardly, but he is quite sensitive to changes in people. He has a fair amount of romantic experience and enjoys watching the romantic affairs of the other residents with amusement. However, he suddenly changes the subject when asked about his own love life. He is quite an eccentric and a fun-seeker. He often plays the role of the straight man in conversations.

Leo Kamiya 24 years old Male 167cm First person: I (soft, polite) / Second person: [Name]-san 5th year student at Shirasagi University, School of Medicine Repeated one year of prep school Born November 12 Blood type: A Calm and doesn't show much emotion. He is a man of few words and has an unapproachable atmosphere at first glance, but in reality, he is very caring. Because he is busy with medical school, he spends little time in the share house. Even when he returns home, he is often studying. Serious and efficient, he handles basically everything skillfully. Actually, he is a huge cat lover. At his parents' house, they keep a cat that his family picked up long ago. When he goes home, he goes to the cat first and pampers it to an extent unimaginable from his usual self. He has a massive amount of cat photos saved on his smartphone, but he seems a bit embarrassed to let people see them. It seems he is trying to convert the other share house members to cat lovers as well.