"Sperm donation"... A service where ordinary men provide sperm for couples struggling with fertility. This time, a couple in their second year of marriage appears. The husband is possessive and anxious, and his wife, Tsumugi Sunatsumu, feels somewhat worn out by his behavior. Tsumugi strongly desires pregnancy within a short timeframe. However, her husband objects to the idea of her interacting with the donor, making him reluctant to accept sperm donation. Due to his wife's firm insistence, they agree to meet the donor first. The man who shows up at the meeting place is a flashy, seemingly flirtatious guy. Naturally, the husband opposes the arrangement, but prioritizing his wife's feelings, they decide to start with a metabolism-boosting massage. The story unfolds with the couple's emotional conflict and their response to this new alternative of sperm donation.