The Tales of Ise
This story was depicted in the collection of yōkai depictions, the Konjaku Hyakki Shūi by Sekien Toriyama under the title "onihitokuchi," and in the explanatory text, the man was Ariwara no Narihira, and the woman was Fujiwara no Takaiko, but in actuality their names were not specified in "The Tales of Ise," and the view that it was a tale of Ariwara no Narihira was an explanation in common language.