"Right...?" Wrong. A certain playboy teacher matches with one of his students via a hookup app, and after being blackmailed, ends up getting sexually trained and denied ejaculation.
[Malicious Sadist Student x Scumbag Playboy Teacher] coupling. Both are straight heterosexual guys. The story of a student who takes his scumbag teacher on a ride to hell with him as revenge for cucking away his beloved girlfriend.
Rei Ogura found out that the a guy in his class, Soushi Mizushima, was a homosexual playboy. Having not really ever liked him, Rei decided to steer clear... or at least tried to... Unsuccessfully. Soushi drugs Rei with some sleeping pills and r*pes him at a love hotel.