InsomniacEnigma's manga / #drunk(22)

Mc unknowingly got involved with a taken girl and became a topic for gossip; when he vented his frustrations with his former senpai, he got drunk and got raped by his pretty senpai. Looking at the cover, I can tell that there is a possibility of a 3p or love triangle going on in the near future :3 so far, the other victim is winning in my book since the senpai is an asshole so far

Drunk confession; mc has a habit of confessing while he's drunk???