Reiko Makihara of the General Affairs Division died in a fire. A month later, Junko was in a bad mood while traveling with her office co-workers. This is because her lover, Hiroaki, is a good match with accountant Suzuko. That's why Junko decided to go see her love letter partner from an unknown sender in her bag. However, Junko is caught in a rockfall at the meeting place and dies. However, a black cat spirit appears before Junko who became a ghost. The black cat says, "If you let me use half of my body, I'll bring it back to life." An occult suspense short story in which a mystery calls a mystery.