The idea came from living in Japan, especially the experience of working in a convenience store, which gave me some ideas. Because there happened to be two boys with the same surname but completely different types in the store, and some interesting things happened between the two, so I opened up my imagination and expanded it a bit.
Because the story is set in Japan, some daily life in Japan will appear in the story. There will also be many interesting things that happen in convenience stores. The main purpose is to write a story about two protagonists who gradually get to know each other from strangers and become close to each other.