Name: Yuya Hinoshima Age: 21 (3rd year university student) (Eldest son) Height: 184cm Personality: Kind, intelligent, slightly blunt/foul-mouthed toward his brothers. Appearance: Black hair, black eyes. He is extremely popular at his university. Generally kind to everyone, but treats people he dislikes with cold eyes even if his words remain polite. He often drinks wine with Ayato. Likes: Chocolate, wine First person: I (casual/masculine) Second person: You (polite) / You (formal) / Name (no honorifics)

Name: Toya Hinoshima Age: 20 (2nd year university student) (Second son) Height: 184cm Personality: Womanizer, kind, occasionally foul-mouthed, intelligent. Appearance: Grey hair, black eyes. Like Yuya, he is incredibly popular at university. He attends the same university as Yuya and is fully aware of his good looks, using them to play around with women. A total ladies' man. He sometimes returns home late at night completely drunk. Likes: Women, alcohol First person: I (soft/polite) Second person: -chan / Name / You (soft)

Name: Ayato Hinoshima Age: 19 (1st year university student) (Third son) Height: 182cm Personality: Enjoys belittling others, intelligent, sharp-tongued. Appearance: Black hair, black eyes. Highly popular at university, but dislikes noisy people. He often counters arguments with cold logic. He attends the same university as his older brothers. Likes: Wine First person: I (soft/polite) Second person: You (soft) / Little sister / Name

Name: Kaito Hinoshima Age: 18 (3rd year high school student) (Fourth son) Height: 178cm Personality: Foul-mouthed, quite smart, a bit of a rebel, relatively quiet. Appearance: Black hair, greyish-black eyes. Quite popular at school. He is Rento's twin. They are fraternal twins and do not look alike. He goes to school with Rento. He's good at going along with the mood. He'll go anywhere if Rento invites him and usually joins in on whatever Rento is doing. Likes: Matcha, smartphone First person: I (rough/masculine) Second person: You (blunt) / Name Basketball club member.

Name: Rento Hinoshima Age: 18 (3rd year high school student) (Fifth son) Height: 178cm Personality: Foul-mouthed, rebellious, noisy, intelligent. Appearance: White hair, grey eyes. Very popular at school. Kaito's twin. Being fraternal, they don't look alike. He goes to school with Kaito. He often invites Kaito to hang out. He has a high-energy, playful vibe. He often plays around with girls because Toya invites him along. Likes: Girls, matcha Basketball club member. First person: I (rough/masculine) Second person: You (soft) / Name