[Maka Fushigi] Short Distance Relationship - Childhood Friends

I think this one belong to Mc saves/ takes back girl.

MC and FMC are childhood friends and also sex friends. But during the sex, fmc says that she have someone she likes ( senpai from school, "antag") and that the last time they have sex. FMC have sex with antag, but the rings bell, so antag invite fmc to his home. When fmc arrived she discavers that antag actually runs a brothel in his home, and there was already 2 guys w8 for fmc. Antag drug the fmc and then they raped her. Fmc after the incident runs to mc and tells him everything ( omg, i know, this girl actually have brain). Angry mc runs to beat the antag, but this not end well for him, but, bc he got beaten, police react and found knife and drugs on antag ( probably end up in prison). Fmc visit mc in hospital and they end up together.