JUL-467 Tsubaki Kato is invited by her mother-in-law who wants her son-in-law's big dick all the time.

Tsubaki lives a lonely life while her husband is away on a business trip to the countryside. - At that time, the newlywed daughter and her husband were worried and decided to live together. - Tsubaki feels a lot less lonely, but she can't help but feel the pain in her body... - One night, when Tsubaki accidentally witnesses her son-in-law, Yasuo, masturbating, she loses the ability to speak and reason due to the huge penis, and begins to seduce him in every way possible. - Unable to resist his mother-in-law's provocative eroticism, Yasuo becomes more and more addicted to her...