Because I couldn't get my beloved wife pregnant, I couldn't resist the corrupt practices of this village. I could only silently watch as my wife was repeatedly penetrated before she could conceive. (Miyanishi Hikaru, MRSS-196)

Shiori and Katsu, childhood friends who grew up in a small village, get married. However, the village has an old custom: if they haven't had a child after six months of marriage, a "variant" must perform sexual intercourse on them. Katsu watches helplessly as Shiori is violated by another man, falling into despair. On the other hand, Shiori finds having sex with the variant incredibly pleasurable, even going to him multiple times...