While studying, the young man started working part-time at a family restaurant in the city, and was busy every day working in the dining area, receiving kind and strict guidance from his friendly coworkers. Wakatsuki-san, a busty housewife who also works part-time at the same restaurant, also gives him guidance, sometimes gently and sometimes seductively... "Yoshino-kun, in restaurants, you don't say things like "toilet" in front of customers," "In our restaurant, we call the toilet number 3," "Then let's go to number 3 together."