Haramaseya

Akito Terada is an ordinary salaryman with a remarkable physical characteristic - his injuries heal at an unusually rapid pace. His grandfather, a renowned genetic researcher, conducts a thorough examination of Terada's body, including his blood, cells, and sperm. This investigation reveals that Terada not only heals quickly, but also possesses a gene that makes him exceptionally fertile. The discovery leaves Terada unsettled, as he contemplates the potential consequences of engaging in any intimate relationship with a woman. Terada's unease is compounded by a request from a sperm bank, which learns of his unique genetic makeup and asks him to donate his sperm. Initially, Terada is wary of the proposal, sensing an ulterior motive behind the request. However, he eventually agrees to the donation, but only under two stringent conditions: the recipient must be a woman under 30 years old, and the donation must be made through direct sexual intercourse. This unusual stipulation sets the stage for the events that unfold.