Mitsuki is a quiet, bespectacled part-timer who despises her sexually harassing manager. One day, a notice appears in the staff locker room banning employees from serving customers in sweaty underwear worn all day. Dutiful Mitsuki reluctantly obeys his perverted rule and is drawn deeper into his games: hidden upskirt shots with no bra or panties, naked cunnilingus at the register, cum covering her glasses and face, and humiliating exposure in a barely worn work uniform. The J-cup employee is gradually conditioned until the degradation completely conquers her.