Riko is a soft-spoken, horny J-cup newcomer who moved from the countryside to Tokyo for sex work. Unable to refuse customers, she keeps getting fired for providing services that go too far. At every new workplace she vows to say no, yet demanding clients still talk her into forbidden touching, fingering, forced handjobs, raw penetration, and full sex. Used however they please, she cycles through soaplands, breast bars, men's spas, and outcall services on a complete tour of the sex industry.