Yousuke is enjoying a care-free life, living off of a wealthy woman. One day, management of an establishment, that forbids sex between staff and their clients, finds out that he's been sleeping with the girls! Yousuke receives punishment as payment for breaking the rules, by having his virgin ass stuffed with a dildo and being forced to wear a chastity device. Yousuke, who's been kicked out of his home as a result of what's happened, confronts the man who is the source of his issues and tells him that he'll be the next one to take him in.

1. Shitteru yo. Instead of saying what he wants to say or doing what he wants to do, Sawahata smiles to avoid getting involved. His school life seems so boring and nothing interests him anymore. That is – until he finds Hoshizaki glaring at him from across the classroom. The no-eyebrows-face intrigues him, pulling at emotions he didn't know he had. What does Hoshizaki really want from him? And what should he do now that he can no longer avoid Hoshizaki? 2. Shireba Shiru hodo 3-4. Niichan no Renai Kakumei 5. Risei wa Inma ni Kuwareru 6. Datte Senpai ga, Ore wo Miteta kara 7. Niichan no Renai Kakumei Sonogo

A slutty friend ends up developing a love for anal sex!? Ryo, who possesses a higher than average libido, used to sleep with women he didn't know. His only other sex-obsessed friend, Akanishi, has threesomes on a nightly basis. Two men with strong libido awaken to the meaning of love.

After stomach cramps land Muramachi Koharu in a bed at the nurse's office on the very first day at his new school, he suddenly wakes up to find himself on the landing just before the roof door. And there's a student he doesn't know sitting right next to him! "Where am I? Who are you?" The student says he's one year Koharu's senior and he leans closer and closer to him…! He pushes Koharu down… and suddenly kisses him!

On a hot summer afternoon, Hayato meets the new transfer student, Souma, who has not been able to adapt to the new environment. Hayato always manages to be in Souma's sights and thinks that he will be able to take care of him. The familiar touch allows Souma to familiarize with the environment until he's able to smile again. Meanwhile, Hayato tries to fix his past mistakes. ---