Genkaku Cool na Sensei ga Aheboteochi!

Synopsis

Kimishima Souma has a crush on his neighbor, Rinne Kazama. Who is now her homeroom teacher. Souma confesses to her via a love letter, but is turned down in front of his class. The he goes to his school nurse, Mizuki Hazuki. He tells her the whole story and she consoles him by giving a sort of an aphrodisiac pill. Then they move on to having sex, during which Mizuki confesses her love to Souma. Their intercourse then later interrupted by Rinne. And she threatens both of them to have them expelled. Souma gets angry and rapes Rinne (which becomes consented after a while), while Mizuki videotapes them. After the sex Mizuki tells Rinne that she love Souma and to give them 10 days to prove it or she will release the video.