Koumi-jima Shuu 7 de Umeru Mesu-tachi

Soaplands are mysterious brothels where prostitutes bathe with their clients and wash each other. Seiichi Ozaki, a single man who works as a teacher at a high school, has decided to visit such a place to let off steam sexually in a good atmosphere. The remote island he arrives at, however, has a special problem. After generations of the inhabitants have fathered children like crazy with the prettiest women, the paradisiacal island is now home to a series of enchanting ladies, all of whom can no longer get pregnant. At least not without the sperm coming from outside the island – and Seiichi’s lust is, appropriately enough, insatiable.

子産み島 ～週7で産めるメスたち～, Koumi-jima Shuu 7 de Umeru Mesu-tachi, 아이 낳는 섬 ~주 7회 낳는 암컷들~,Childbirth Island ~Seven Week Pregnancies~