A young man, juggling his studies with a part-time job at a family restaurant in the city, diligently works every day in the dining hall, receiving both polite and strict guidance from his friendly coworkers. Among them is Miina Wakatuki, who works as a part-timer and supports the young man with kindness and occasional seductive charm. One day, when Yoshino accidentally says the word "toilet," Miina gently corrects him: "In restaurants, we don't say 'toilet' in front of customers." Responding with a playful tone, Yoshino replies, "Then how about we head to number three together?" Their everyday conversations exude a warm yet enticing atmosphere, like a scene from a drama.