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霍 青娥 (かく せいが)
The "Wicked Hermit Who Passes Through Walls", also nicknamed Seiga Nyan Nyan (青娥 娘々 [せいが にゃんにゃん]), lit. Lady Seiga.
Stage 4 boss of Touhou's Ten Desires & owner of Miyako Yoshika respectively.
Her name came from the title, and name of the heroine, of 青娥, an episode from Liao Zhai Zhi Yi / Strange Stories from a Chinese Studio Volume 7.
Seiga's hair stick is actually a "Wall-Removing Chisel" that lets her pass through walls. It is likely based on a chisel-shaped magical digging tool that appeared in Liao Zhai Zhi Yi. ([1]) In the original text, it was called 镵 (simplified) or 鑱 (traditional). It means a type of ancient spade or a herb digging tool. (See also the baidu pedia)
[1]: Enmei's blog(Japanese): http://enmei.sblo.jp/article/47863587.html
Typical Tags
Person: blue hair, light_blue_hair, blue_eyes, hair_rings, bangs, medium_hair, medium_breasts, large_breasts,
Outfit: blue_dress, aqua_dress, open_clothes, vest, open_vest, collared_vest, frills, short_sleeves, puffy_sleeves, puffy_short_sleeves, belt, white_legwear, bobby_socks, black_footwear, petticoat
Accessories: flower, ofuda, jewelry, hair_stick, hair_ornament, chisel, leg_ribbon, shawl, hagoromo
See Also
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