Misa walks into a haunted garden where people keep choosing death, and the hotel owner expects her to fix it with a price tag. She doesn't hesitate. What starts as a clean transaction, black magic for cash, becomes something that costs more than money, because the spirits aren't just angry, they're drowning in the weight of their own execution. This OVA refuses the comfortable horror that lets you leave untouched; it asks what it means to carry someone else's despair when the only tool you have is power.

Kuroi Misa accepts an unusual job offer: a luxury Japanese hotel is plagued by a string of deaths. Guests keep hanging themselves in the garden, and the worried owner wants the problem solved. What makes this case different is the location's dark history. The garden was once an execution ground, and spirits linger there still. Misa, a high school girl with experience in necromancy, is brought in to drive them out. She agrees to use black magic to dispel the spirits, but her price is steep: ten million yen. This single OVA episode blends fantasy and horror in an occult story set within the walls of a haunted hotel.