Hirune no mushi
昼寝の虫

Translation: nap worm

Hirune no mushi lives between the stomach and the esophagus. It looks like a cross between a creeper vine and a centipede. Both its front and its rear look identical, so it’s very hard to tell which end is which.

People infected with a hirune no mushi lose the ability to swallow, and spend most of their day napping. Without immediate treatment, death is unavoidable.

Treatment is accomplished using mokkō (Saussurea costus) and kakkō (Pogostemon cablin; i.e. patchouli).