Ever since he started living with his wife's mother, Mayu, the husband has been troubled by her overflowing sex appeal. Trying to do something about his overflowing desire, he peers into her bedroom. What he catches a glimpse of is a perfect body beyond his imagination. Her beautiful big breasts look like they might burst through her tight shapewear at any moment, and her lewd body lines stand out clearly. The dense forest of thick hair cannot be hidden by modest fabric. He is helplessly turned on by her mouth-watering body...