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―Cover of the 1886 translation.
"Kobutori Jiisan" (こぶとりじいさん, Kobutori jīsan) translated directly as "Lump-Taken Old Man" is a Japanese Folktale about an old man who had his lump (or parotid gland tumor) taken or removed by demons after joining a party of demons (oni) celebrating and dancing in the night.
The tale is a rendition of a tale about a woodcutter (firewood-gatherer) from the early 13th-century anthology Uji Shūi Monogatari.