An adulterous sex movie of girl Nao Jinguuji who goes with a group of 4 close friends to take a hot spring bath after a long period of not seeing each other. In fact, this trip has another purpose. Ken-chan has a secret crush on Asami-chan but doesn’t get a chance to show it to her. He immediately asked his close friends who are now husband and wife to help. So they organized this trip so that the two of them could get closer. Nao and her husband helped Ken-chan achieve his goal. But that night, seeing Ken-chan violently make love to Asami-chan excited Nao. She can’t stop thinking about Ken-chan and when Ken-chan accidentally enters the girls’ bathroom, Nao holds him back and uses her beauty to seduce him to ejaculate repeatedly inside her. And when she returned, Nao was pregnant, and that pregnancy was most likely Ken-chan’s…