As a student at a university with high tuition fees and no financial support from her family, Shirosaki has to work hard at a small grocery store. Although her income isn't high, it somewhat helps her cover her daily living expenses. Today is her first day working at the store, where customers are coming and going in a rush, ranging from cheerful and friendly people to picky and rude ones... but the most dangerous and frightening are the perverted types that Shirosaki unfortunately encounters. He always intentionally gets close and makes inappropriate moves, touching her body; although she tries to avoid him, it only seems to excite him more. When the store is quiet, he becomes bold and begins to proposition her to have sex with him in exchange for a large sum of money. Given her difficult circumstances, Shirosaki reluctantly agrees.