Ch. 6: When Arai agrees to going out with both Miyashita and Tozuka, they punish him
Ch. 1-4: After Hiroki is rejected by his best friend Yuuji's father, Seiji, who is into S&M, Yuuji asks Hiroki to choose him. When the two are about to have sex, Seiji interrupts their reckless S&M play. Afterwards Hiroki becomes lovers with both father and son
Ch. 2-3: Takahiko plans a trip to an onsen to expose Aizawa's true nature to Souta. But it backfires, ending with a threesome between Taka, Aizawa, and Magi, Taka's best friend who's always liked him.
After his mother's death, Soubi goes to an isolated island contains only men, Mebara Island, the island of his mother’s birth. is the only one who can have children. On the island, Soubi learns that he has a unique birthmark called the Harami Bara, which shows he from a special bloodline that allows him to give birth. Soubi meet the three brother of the Kannagi family, a family who own most of the island, who tell him they will impregnate him to save the island.
Santarou's ordinary in every way except that his body gives off a scent that unnaturally arouses men. Because of this he is regularly fondled by his demon childhood friend Sukai, oil tycoon transfer student King, mysterious classmate Mimi, and the super perverted student council president Tomomatsu.
One day, Chika discovers his friends Ryo and Nao, also Chika's crush, are sex friends and Nao invites him to join in. A year after their activities started, Nao suddenly says Chika should try bottoming, but, since Nao saves his penis for his girlfriend, Chika will have to bottom for Ryo. Though it takes convincing, Chika agrees to try. However, after doing it things become awkward between Ryo and Chika and Ryo ends up confessing his feelings for Chika.
Ch.4: After Inoue is caught trying to confess to his coworker Minami by section chief Tagami, Tagami forces them to have a threesome. Now, Tagami won't stop sexually harassing Inoue and Minami is avoiding him, but not for the reason he think.
Ch. 4: Accountant Mikihito is transferred to his company's branch in Italy, where childhood friends Mario and Alex fall for him. When Mikihito tells them they must choose which one will give up pursuing him, Mario and Alex begin avoiding each other, causing him to feel guilty and rethink his feelings
Pg.145-177: Student council secretary Saki finds himself in a trap, when he confronts problem students Ren and Akanishi
Ch.2: After twins Kai and Sora's are seen kissing by shut in student Rio, they discover the reason for his seclusion and comfort Rio with their bodies
Nurse Ga Oshigoto