Tooru is a shy and quiet student who has developed a special crush on his close friend Ryouji, the most popular member of the high school swim team. In front of Ryouji, Tooru hides his feelings and acts as if he is just one of Ryouji's good friends, but in a moment out of the blue his world will be turned upside down as Ryouji will confess a secret desire for Tooru. Dazzled, Tooru can barely hide his excitement for Ryouji and quickly accepts his offer. As time passes, Tooru's happiness begins to fade knowing that his affair with Ryouji was just a fling based out of Ryouji's sexual curiosity.

A childish student, Shirou carries a torch for his teacher, Oka. Masami, a good friend of Shirou's, who has cherished him like a brother, is confronted by Ryuuji, another friend of theirs, concerning his true feelings for Shirou. Masami and Ryuuji conclude a gentlemen's agreement, in which neither of them can hit on Shirou. Ryuuji orders Masami to act as a substitute and take care of his sexual desires in Shirou's stead.

Ever since he was young, Mizuki's mother raised him up as a girl and forbade him from being close to other kids. Always dressed-up in a female kimono, this youngster is actually a successor to a wealthy clan. His mother hid his existence from Mizuki’s own father to prevent him from being caught in the crossfire of succession.