That JAV

Ryo, the wife, gladly welcomes her husband's younger sister who has come to Japan to take the university entrance exam. The younger sister, who exudes a unique atmosphere, is a true lesbian and has an eagle eye on the body of Ryo, the beautiful brother's wife. One day, she pretends to help Ryo clean up the bathroom, but instead, she starts to fondle Ryo's body as much as she likes. Ryo becomes more wary of his sister after that incident, but he is drawn in by her suspicious atmosphere...