Ryuu tries to befriend honor student classmate, Yoshito, but he's shot down. After Yoshito visits Ryuu's cousin's motorcycle repair shop they become closer. But Shinya, Yoshito's brother, wants to destroy everything important to Yoshito.
Despite his family's high expectations and wishes, Tatsumi doesn't want to succeed his family's yakuza clan. He finds escape by visiting Shingo, his friend and the leader of a gang of thugs who expresses love through violence. However, Tatsumi's younger brother Tomomi loves Tatsumi and desires to protect him, especially from Shingo, but also wants to see him succeed to clan. Tatsumi searches between the two to find what will fill the void in his exists.
Takao and Yuki are CHFs who share a fear of the dark after accidentally being locked in a shed as children
Ch. 1-3: Takao keeps to himself, only talking to his CHF Yuki. When they are put in different classes, Takao's lively classmate Hiroto begins approaching him, slowly opening up his world, much to Yuki's displeasure
Woman loving Nao falls in love at first sight with a beautiful woman, Azusa. Without speaking, she agrees to a date with him. At the end of the date, Azusa reveals that he's a man, but Nao, though surprised wants to see him again. Their relationship is going smoothly until Subaru, Nao's childhood friend and roommate, jealously tries to get between them.
Music teacher Sadaki catches the attention of Shou, the informant. Shou blackmails Sadaki using his journal that contains writings about Sadaki's secret love for school prince Ookouchi. In order to stop Shou from sharing the contents of his journal, Sadaki must becomes Shou's partner until he gets bored.
Yoshii has a crush on school nurse Urukawa, but due to a well-meant warning from his classmate Sugao, he starts avoiding the infirmary. But, ends up back there on a rainy day. There, Yoshii is drugged and wakes up to Urukawa and Sugao having sex on the bed next to his. When Sugao leaves, Yoshii finds out Urukawa and Sugao are sex friends, despite Sugao's feelings, and Urukawa likes seeing pure hearts like Yoshii's trampled. However, Yoshii's heart is slowly healed by transfer student Takasaki.
Stories of the employees at Hoshi no Yakata, an S&M club
Ch. 1-4.5: Sakai has been in love with his playboy best friend Nishimura for a long time. Since high school, Sakai has been sex friends with Kitada to relieve the stress of loving Nishimura. When Nishimura walks in on Sakai and Kitada, their relationship changes.
Student council president Seigo has been dating cute first year Yuuya for 3 months. When Yuya's childhood friend Ninomiya finds out, he ties Seigo up, takes pictures, and violates him. After Yuya walks in on them, Seigo learns they have been stealing each others lovers since 3rd grade and Yuya completely shifts from his cute facade to his true delinquent personality and embraces Seigo to reset everything prior. Afterward, Nonomiya becomes serious about Seigo and he and Yuya begin sharing Seigo.
Ch. 6: When Arai agrees to going out with both Miyashita and Tozuka, they punish him
Unbalance Na Netsu