小姓
こしょう

Translation: page, apprentice
Alternate names: koseu
Habitat: between the heart and the diaphragm
Diet: prefers sweet sake

Appearance: Koshō is a parasitic yōkai with a snakelike body and a child-like face. It has a white, scruffy beard. It has an umbrella-like protrusion on the top of its head. It can speak, and is constantly chattering like a child. It loves sweet sake. In lives in between the heart and the diaphragm, where neither medicine nor needles can reach.

Interactions: A koshō infection is a terminal illness. Not even the best doctors have ever come up with a way to treat it. The umbrella-like protrusion on its head blocks medicine, and it hides too deep in the body for acupuncture to be effective.