Yagishitasou no Jibakurei

"I'll ram you a lot so..." That's what that shitty college boy said, ramming my insides over and over again, even though my insides are dead (Sekuzu Yoshito), 29 years old. By the time I woke up in my room I had become a ghost. Besides, I was a spirit so I couldn't leave the room either. I protected my place by chasing away the tenants, and finally a roommate appeared whom I couldn't chase away. He is a college student and is 21 years old (Itou Takumi). Who not only can touch me, but we bet "Let's have sex, and whoever comes first loses. If I come first, I'll go." In my desperation to kick Takumi out, I accepted the bet, but the result was....