This role-play is performed by adults. Yotsuha, a married woman who works part-time at a gyudon chain, becomes friends with a fellow university student. Yotsuha is attracted to the serious and sincere young man. One day, since they both arrived at the same time, they went out for drinks and started a relationship. After that, they continue to act out no matter where they are, at the end of their part-time jobs, in the store during breaks, or even in the kitchen during business hours, and they realize that their bodies are perfectly compatible...