After learning that he is infertile, a husband turns to a sperm bank so he and his wife can have a child. Wanting exceptional genes, he chooses Okamura, a gifted donor with an IQ of 141 and outstanding athletic ability. But Okamura only provides sperm through timed, direct intercourse. He insists it will be a loveless, purely mechanical procedure, yet the husband cannot suppress the pain and jealousy of watching an unknown man have sex with and creampie his wife.