A-Yokai-A-Day: Koshinuke no mushi

If you’d like to join me and many others in painting a yokai a day this month, all you have to do is paint, draw, or create any yokai you like, and share it using the hashtag #ayokaiaday. There’s no set list of yokai you have to paint, but you’re free to browse yokai.com or any other yokai resource and choose your favorites.


Koshinuke no mushi
腰抜の虫

Translation: back dislocating bug

Koshinuke no mushi are yokai that infect the lower back. They have the appearance of dragonflies, and they appear suddenly out of nowhere and fly into the body. After successfully entering their host, they flutter about in the lower back area. The entwine their long tails around the spine, squeezing the vertebrae. They strike the spine with their spiked tails, causing strains, slipped disks, and other problems.

When a koshinuke no mushi strikes the spine, its victim is suddenly overcome with acute pain. Their legs buckle and they collapse. Their chest becomes tight, and breathing becomes difficult. They break out in cold sweats. The mushi’s saliva spreads throughout the body, causing heartburn, choking, and vomiting.

Fortunately, koshinuke no mushi infections can be treated by ingesting herbal remedies such as mokkō (Saussurea costus) and kanzo (Glycyrrhiza uralensis).


If you enjoyed today’s A-Yokai-A-Day entry, please consider becoming a patron and supporting my work by visiting patreon.com/osarusan.

One thought on “A-Yokai-A-Day: Koshinuke no mushi”

  1. Hello! I’m contacting you via your yokai page because I can’t seem to connect w/ your Patrion pages. I keep getting a “timeout” error?

    I think I’ve had this one a time or three…

    Hope to reconnect with you soon.

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