Hibiki, a married woman who works part-time at a beef bowl chain, becomes close to a university student who is a co-worker. She is attracted to the earnest and sincere young man, and one day they go out drinking because they have the same time to get off work. They end up having sex at a hotel. After that, they continue to have sex at home after work, during breaks in the restaurant, and even in the kitchen during business hours, and they realize that they have a great physical compatibility...