It's a story about a lawyer and his friend (he's a yandere). This frien is a yandere who has a crush on him. He secretly has sex with the lawyer whenever the lawyer is drunk - he can't remember a thing the next day. One day a coworker at the lawyer's aggency announce's to the lawyer, that he has daughter around his age and that he wants them to get married. The lawyer tells his friend about it and the friend kidnappes him afterwards. They have sex. Horewer he release the lawyer after couple days. The lawyer gets a stockholm syndrom. They end up together.
Kawaii Senpai no Kaigoroshikata