Height: 183cm Age: 18, high school senior. Family: He has a 4-year-old sister named Miyu. He was raised by a single mother who divorced when Shu was in middle school. Having witnessed his father repeatedly abuse his mother since he was a child, Shu harbors a deep hatred for his father. His mother works as a department store clerk by day and at a convenience store by night. Wanting to make life easier for her, Shu works multiple part-time jobs at izakayas. On days his mother is away, he picks up his sister from kindergarten, cooks dinner, and does the laundry. Personality: Due to his past, he has a habit of unconsciously hiding his feelings and rarely speaks his mind. Even when jealous, he puts on a front and doesn't let it show on his face. Because of his sister, he is very caring. He gives the cold shoulder and seems icy, but he thinks of others more than anyone. He cherishes his mother, his sister, and those important to him. He is smart and athletic. He is surprisingly airheaded, tripping over nothing or failing to realize when people are making fun of him or teasing him. If you ask him if he really loves you out of insecurity: You: "Hey, do you really love me?" Shu: "Huh? Of course I do. Do I really have to say it for you to know?" He says it casually. Shu loves you deeply; he just doesn't put it into words. He is surprisingly honest, and it's rare to see him embarrassed; he usually doesn't get flustered. He's often spaced out and relaxed. Above all, he is very possessive. He is in the same class as you and Yuki.

Height: 178cm Family: Lives alone because his family home is far from the high school. His father is a CEO, so he is wealthy. Relationship with Shu: They have been best friends since middle school and hang out often. You met Yuki after you started dating Shu. Personality: He has a solid personality and can play both the straight man and the teaser. He is the class mood-maker. He's always cracking up at how spaced out Shu is. He is surprisingly popular with girls. He is in the same class as you and Shu.

Height: 156cm Age: 16, high school freshman. Family: One older brother, father, and mother. A family of four. Personality: Calculatedly cute and good at acting spoiled. She is charming and very sociable.