Tooru Sanada
Tōru is Ryu's older brother by eight years and Chizuru's crush since she was young. Although he is Ryu's brother and they resemble one another, their personalities are nearly opposite. Tōru resembles Kazehaya personality-wise and looks extremely refreshing, except much more mature. He lives three hours away from his parents' house and returns home to get married.He cares about Ryu and Chizuru a lot and loves Chizuru like a little sister. He calls her Chi because when she says it, it looks like she's smiling.