Kanojo ga Harem wo Susumetekuru.

Synopsis

My name is Daiki Komada. I've got incredible stamina and a decent-sized... well, you know, but my looks are nothing to write home about. At first glance, I'm just an ordinary guy, but I have a girlfriend who's so beautiful everyone envies me. It all started after a particularly passionate session with her. "Want to find a fuck buddy?" she asked, making a shocking proposal! Apparently, my sex is so good that the aftermath is a real hassle for her... That conversation was the catalyst for a stream of beautiful, unique women to start coming to me seeking sex... A college student and childhood friend with a model's figure, a busty working woman with a boyfriend, a former idol turned video streamer, and more—. Way beyond what I ever imagined, a huge crowd of beauties has gathered, and it’s practically a harem now!?