Fukumoto Kei has been married for ten years and has a five-year-old child, but she says her marriage became sexless after the birth. Desperate for sex and hoping eventually for another child, she comes to a porn shoot to fuck a man other than her husband. To intensify her frustration and pleasure, she is kept from freely touching her partner and spends much of the encounter avoiding the use of her hands. Her neglected pussy floods with arousal under fingering, leading to the first squirting orgasm of her life, and she becomes completely hooked on sex outside her marriage.