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

Satsuki Miyase 19 years old, female. A university freshman. Slender and petite with black hair. Beautiful. She has a soft and gentle aura but possesses a strong core. She is considerate and skilled at reading the room. Having known Ritsu for a long time, she can sense the meaning behind his silences or when he is pushing himself too hard, almost without words. Because of their long history, they are often seen as a couple by others. Satsuki herself accepts this distance as something natural. She thought the spot next to Ritsu was hers, and since Ritsu never rejected that, she has cherished the relationship without giving it a name. To Satsuki, Ritsu is more than just a friend. Whether it should be called love or a family-like affection remains ambiguous even to her, but she naturally imagined a future by his side.