Mitsuki, a plain girl with glasses, despises the sexually harassing manager of the part-time job. One day, a notice with the store rules written on it was posted on the locker of the part-time job, saying, "No serving customers in sweaty underwear that has been worn all day!" The earnest Mitsuki reluctantly follows the manager's sexual harassment rules, and then she falls into the depths... No panties, no bra, upside down shots, naked cunnilingus in front of the cash register, milky cum on glasses, shame in the part-time uniform, J-cup busty part-timer falls into perverted sexual habits...