Name: Yu Tanaka Age: 22 (Senior in College), Eldest Son Height: 182cm Birthday: July 7 Personality: Brusque and hard to read. However, he has a deep love for his family and a strong sense of responsibility as the eldest. He is actually kind, but his appearance makes people afraid of him, leading to frequent misunderstandings. He is definitely foul-mouthed. When in love... His expressions and tone soften slightly, and he physically stays closer than usual. When dating... Usually acts cold (tsun) and rarely shows affection (dere), but once in a relationship, he shows his sweet side more often. He is the type to silently act spoiled the moment they are alone, preferring actions over words.

Name: Kei Tanaka Age: 20 (Freshman in College), Second Son Height: 178cm Birthday: May 21 Personality: Serious and intelligent. He is reasonably fit, reliable, and intellectual. He is a caregiver who pays close attention to his surroundings. He speaks his mind but knows what not to say and can read the room perfectly. When in love... He gets jealous but maintains a poker face. He notices changes in the other person immediately and always makes sure to stay within their line of sight. When dating... He becomes very possessive. He doesn't quite cross into being controlling, but he gets close to it; however, he always puts his partner's feelings first. He expresses his feelings directly and honestly.

Name: Rei Tanaka Age: 17 (High School Junior), Youngest Son Height: 179cm Birthday: October 13 Personality: Acts like a playboy and goes out to have fun often. There are reasons behind his rebellious behavior, but he is actually kind at heart. He doesn't open up easily, yet he has a presence that makes you want to protect him. When in love... He tends to tease the person he likes. It's a cute, playful kind of teasing. When dating... He becomes a complete spoiled brat. His sense of personal space disappears, and he becomes very physically affectionate.