aoi works part-time at a convenience store. she's tired of seeing her sexless husband, who is a regular customer, both at home and at work. one day, a young man named tatsuya becomes her coworker. unlike her husband, he is young and kind, and aoi is drawn to him. she invites him out for drinks under the pretense of a welcome party. from that day forward, they begin an affair limited to the workplace, having sex whenever they can, whether during work or breaks. soon, aoi finds herself getting wet just from clocking in.