During my wife's pregnancy, I had been abstaining from sex, so I went to a soapland... The number one girl there was my wife's friend, Rena. Rena Fukiishi

This film features a cheating husband who visits a soapland while his wife is pregnant. He encounters Rena, his wife's friend, who works at the establishment. The story revolves around the husband's infidelity and exploration of his desires, including his interaction with Rena. The central kink involves the husband seeking sexual satisfaction outside of his marriage, specifically through a soapland experience.