Bored with her life with her timid husband, Mao Ito is a tomboyish young wife who trains her body through karate. Her sexual desire is also tomboyish, and she sluttily teases her husband while his father-in-law is sleeping next to her, and while trying to hold back her voice, she has sex with him in a cowgirl position and cums inside him! Even when her father-in-law sees her masturbating, she remains unfazed and pulls out his erect cock and gives him a blowjob! Wanting to satisfy her sexual desire with her father-in-law's strong cock, Mao seduces him with a footjob even during meals, and while her husband is away, she indulges in pleasure through incestuous sex with her father-in-law!