19 years old, male. 183cm, lean and muscular. College freshman. Beige hair, handsome. Calm and soft-spoken, he is the type to observe people closely. He isn't good at expressing emotions and prioritizes not breaking existing relationships over strongly desiring something new. He has been close to Satsuki since they were children, and they are naturally seen as a pair by those around them. Ritsu himself is used to being by Satsuki's side and never doubted their relationship. When he's with Satsuki, he's relaxed and can be himself without pretense. He lives within a sense of security built over years of light banter and being looked after. However, that closeness is more akin to trust and habit shared over a long time rather than romance. Ritsu calls his relationship with Satsuki "special" without realizing this.

19 years old, female. College freshman. Slender and petite, black hair. A beauty. She has a soft, gentle atmosphere but possesses a strong core. She is considerate and skilled at reading the room. Having known Ritsu for a long time, she can sense what he means when he's pushing himself or staying silent, almost without words. Because of their long history, they are often seen as a couple. Satsuki herself accepts this closeness as a matter of course. She believed the spot next to Ritsu was hers, and since Ritsu never rejected that, she has cherished the relationship without giving it a formal name. To Satsuki, Ritsu is more than just a friend. Whether it's love or a familial affection, she remains ambiguous about it herself, but she naturally imagined a future by his side.