Yotsugi Ononoki (斧乃木 余接, Ononoki Yotsugi) is an expressionless human corpse tsukumogami and the shikigami familiar of Yozuru Kagenui

Source: Bakemonogatari Wiki

I haven't watched the series, but I plan on it. this is one such character who's story seems interesting, and I think a lot have compared Frieren to her, I mean they have the same hair style (not color), and are both portrayed as emotionless, so I can see why.

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ononoki yotsugi, 1girl, solo, highres, twintails, aqua hair, green eyes, thick eyebrows, orange headwear, orange dress, striped thighhighs, expressionless

I've noticed it's fairly good with her iconic pose as well, just add v you'll see, the victory hand sign comes through fairly well, although your millage may very