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 and owner of Miyako Yoshika respectively. Often also seen with Ibaraki Kasen as a fellow hermit.
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 Strange Tales from a Chinese Studio.
