"Sperm donation"... It is the act of a general male providing sperm for couples struggling with fertility. This time, a couple married for five years appears. "If we keep trying the syringe method, it ends up costing us a lot..." Considering reliability, the husband and his wife Yuki chose the timing method. Timing method requires sex with the sperm donor, but since both husband and wife are treating it as work, the discussion proceeded smoothly. Then later on, Yuki-san successfully received the sperm donation in the form of internal ejaculation, but feeling anxious about just one time, she beseeches the donor for a second and third time. Surely this would count as cheating. Tried to stop the adulterous wife provider...
