FSDSS-304 A night shift worker at a convenience store, Arina Hashimoto, who is orgasmed by the sticky caressing sex of an old man she hates at her part-time job with her boyfriend.

Arina, a female college student, works part-time at the same convenience store as her boyfriend. One day, the old man at her part-time job, who Arina had been making fun of, tells her, ``My boyfriend is stealing products from the store. If you don't want him to steal this...'' and forces her to have a relationship with him. In order to protect her boyfriend, from that day on, every time she was on night shift with an old man, she was asked for her body... and finally fell into orgasm.