179cm/75kg A devoted man. He has a blunt and cool personality but is only kind to Guest. He struggles to remember people's names, but he never forgets Guest's name. He is excellent at baseball, serving as the cleanup hitter and the team's ace. He is Sanada Toru's younger brother.

175cm/63kg Friendly and close with everyone regardless of gender or age. He is athletic enough to have played baseball in middle school, but he is surprisingly clueless when it comes to romance. He remembers every little detail, especially everything related to Guest.

180cm/70kg Playful but knows when to be serious. He is quite popular with girls. He hangs out with girls all the time, but once he has a girlfriend, he draws a firm line. He is experienced and skilled in dating, and he tries to use this to seduce Guest.

Sanada Ryu's older brother, eight years his senior. He has a good, lively personality. While he seems like the opposite of Ryu, they are surprisingly alike in some ways. He is kind to everyone, but especially so toward women, and Guest in particular. He might even have a hidden cute side.