Takuma Yanase is a university student. One day, the factory the main character's father runs suddenly goes bankrupt. He can't pay a rent for his apartment anymore and decides to leave the apartment. "Well, I need to look for somewhere to live at first...." When he is at a loss what to do, a woman talks to him, "Are you looking for a place to live? Let me introduce an apartment. I'm actually a caretaker of my apartment." The apartment is very old, but he feels happy..., a strange feeling....