Forbidden affair sex that must be kept secret from the wife and daughter [Episode 1] One day, Satomi had to pee on her way home from shopping and wet herself in the entranceway... [Episode 2] One night, her daughter-in-law said that her wife wouldn't let her have sex with him. Yumiko said that she would be happy to do it if he asked her, so she went along with it... [Episode 3] One night, when she went to the kitchen, Yuu was having a drink alone. They gradually started talking about their nighttime lives and got excited... [Episode 4] Shihori lives with her daughter and son-in-law. Every night, she hears the sounds of her daughter and son-in-law having sex and her body gets hot...