“Sperm donation” is a service provided by general males to couples struggling with fertility. This time, a couple in their second year of marriage appears. “It’s okay, he said he’d listen to me today.” The husband is possessive and anxious, while his wife, Tsumugi, is tired of him. Tsumugi wants to get pregnant quickly and prefers the timing method, but the husband doesn't want the donor and his wife to interact much. After meeting the donor, the husband is naturally against it. However, at his wife’s insistence, they start with a massage to boost her metabolism. But the donor is a real charmer, and the husband is not happy about it.