Tsugou no Yoi Sexfriend - Episode 4

Not all Japanese men dream of marriage. For example, the protagonist of this story, Yu Arahama, had to refuse his girlfriend's marriage proposal. And in order not to lose the opportunity to satisfy his needs with his incredibly sexy co-worker, he offered her a new paradigm in the relationship: "sex friends". Especially since Yu already had a few such "friends". Upon learning of this, his girlfriend demands that Yu gather all of his girls together and, when a crowd of girls appeared in his tiny apartment, offers them to "end" all relations with Yu. But the girls themselves are not eager to lose such diversity in their sex life...