Movies like sei no gekiyaku

Dangerous Drugs of Sex (Japanese: 性の劇薬, Hepburn: Sei no Gekiyaku), titled Sei no Gekiyaku: Midara ni Kaihatsu Sareru Karada (性の劇薬～淫らに開発される身体～, lit. "Dangerous Drugs of Sex: The Indecently Developed Body) during serialization, is a Japanese manga series written and illustrated by Yuki Mizuta. It was serialized in the digital manga magazine Boys Fan from June to December 2018. A live-action film adaptation was released in theaters on February 14, 2020.

Makoto Katsuragi is an elite office worker who has fallen from his perfect life with the sudden death of his parents, being forced to resign from his job, and his girlfriend leaving him. In a drunken stupor, he impulsively decides to commit suicide. Before he is able to jump off a building, he is rescued by a mysterious man named Ryūji Yoden, who demands he forfeit his life to him, forcing him into a life of confinement and sadomasochistic training. As Katsuragi experiences pain and pleasure that forces him to realize he's alive, he comes to fall in love with Yoden and reconsiders dying.