"Sperm donation"... is the act of an ordinary man donating sperm to couples who are struggling to conceive. This time, we have a couple who have been married for four years. "If (the husband) hadn't caused such problems from the beginning, this wouldn't have happened, right?" The husband is unable to disobey his wife due to a problematic act he committed in the past, and his wife, Rei, has a hold over him. Things go smoothly and the timing method that Rei requested is decided on the day after. The sperm donor and the internal ejaculation are completed smoothly. Normally, they would break up at this point. However, Rei, whose vagina is throbbing with sperm, seduces the donor with a doe-face, asking, "Can I ask for one more shot... is that possible?"...