This is a story about a young girl who inherited a boarding house and became its mistress. According to the laws of the genre, she runs the place herself, but some visitors behave too openly.

This old animated film tells the story of Tachibana Yamato, his friends Mikoto and Takeru. The mystery of the film is the origin of Yamato. He was born from the union of a human and a demonic entity, therefore he has a hybrid nature. Yamato inherited his appearance from his father, and the demon was sealed inside him and slept until he woke up.