Nagagutsu o Haita Deco

When Kosuke wakes up, he finds himself being in a strange house. He meets a girl wearing boots called Hamu there. According to her, her family members suddenly went missing, and she's been living with her pet cat since then. He starts living there to take care of her. But, he gradually becomes doubtful about the situation he is currently involved.... [From Himeya Shop]