Memento Mori

This is the story of Yuu, a college student who has been turned into a promiscuous male, and Asong, a socialite who regrets turning him into that kind of body, living together and engaging in kinky sex.

One rainy night Kiyoshi Mizuki happens upon a young man (Yayoi Saiki) sitting next to a vending machine without an umbrella. Being a nice guy, he invites Yayoi to stay at his place. While Yayoi acts kind of weird, the two head to bed without issue... Not. Yayoi assails Kiyoshi while he sleeps...?! Lewdly begging for him to reciprocate, Kiyoshi gives in to Yayoi's requests and~...