Initially mistaken for a minor because of her small size and youthful appearance, Isumi Sakuraba, a university student, is accompanied back to her home by police officer Amasawa. Despite showing her student identification, Isumi encounters Amasawa anew while she's working part-time at a convenience store. Amasawa, a frequent client, seeks Isumi's advice on what to eat for dinner each time he visits. Anxious yet worried about Amasawa's diet, Isumi volunteers to cook for him.