This strange furry creature illustrated in Sekien Toriyama's Hyakki Tsurezure Bukuro appears to be a tsukumo-gami formed from a stirrup. The accompanying poem suggests that it once belonged to a man who has fallen in battle:¹

膝の口をのぶかにいさせてあぶみを越して

おりたゝんとすれども、なんぎの手なればと、

おなじくうたふと、夢心におぼへぬ。

An arrow is shot deep into the kneecap, and crosses the stirrup as it falls to the ground, hardship falls into its hands, and it sings the same, I don't remember it from a dream.²

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1. Mizuki vol. 2 2003, p. 10.

2. Toriyama p. 215