My mother-in-law is harsh on me. Even if you talk to her husband, it won't help because he is a mother's husband. Her father-in-law doesn't know. Every day I hold back my tears and persevere. One day when her husband went on a business trip, he witnessed her father-in-law masturbating and got an idea. Okay! Let's take revenge by seducing my father-in-law. From that day on, even though her mother-in-law is nearby, the slut revenge plan begins everywhere in the house.