It is mentioned as tale of a vengeful spirit (vindictive ghost) in setsuwa (anecdotes) dating back to the end of the Heian period and its name appears in "Heike Monogatari" (The Tale of the Heike) and so on.
平安時代末期の説話で怨霊wiktja譚として語られており、『平家物語』などにその名が見られる。