♀ f

Spirit Hunter and chef; she appears in the mountains and arrives at the hotel, seeking information on her missing family.

♀ f

Introduced to the protagonist as the professor's assistant prior to his death.

♀ f

Lifelike bironic humanoid dedicated to the protagonist and endowed as part of the will left by the professor. Harbors great strength, and a mysterious past with mixed memories. Was she once truly human?

♀ f

Death Incarnate. In training to become a Great Death. After confessing, "I need to repay 9999 ounces of high-purity souls to the Death Tower," she brandished her scythe. The protagonist hires her to be a front desk / reception for the hotel.

One of the leading chairmen at the multi-billionaire company HOBA, which was founded by the professor. Apparently worked closely with him in the past on things bridging ordinary life and the supernatural.

♀ f

Initially forced to hunt the protagonist as a mercenary, she takes sanctuary at the hotel and serves as an alchemy advisor, claiming the title "Director of Operations".

♂ m

The protagonist of the story, who is forced to turn into a cat spirit for twelve hours every day starting at midnight.