Yoshihito, an ordinary young man, is looking for a job to stabilise his life and he decides to rent out a room in the house that his parents left him. Luckily, he comes across a girl on the street who happens to be asking for directions.

After a long period of zero occupancy, two girls finally move into the vacant room. One is a werewolf and one is a vampire.

Yoshihito finds a job and starts his life as a judge and landlord at the same time. One day, while having dinner with the residents, he is suddenly called by his employer. When he rushes to work, he is suddenly subjected to body modification.

Returning from the world of dreams, Yoshihito's next mission is to find a new resident. He takes Riri and Vivian to England in order to accomplish his duty as an examiner.

In England the group look for a new resident. Information from their data source shows that the new resident is in Yafhrud. On their way, they meet the self-proclaimed demon hunter Nangoo Sanpachi and head to Yafhrud Castle together.

The group arrive at Yafhrud Castle where all the paranormal occurrences are taking place. They walk into the castle's basement to encounter a new resident or an evil ghost.