Yukari Yakumo

Yukari Yakumo is a Touhou Project character.

In the GoAnimate Realm
She is an anti-hero.

On the GoGang Series/Igor's Videos
She had her first Major role on The Rare-gap opening hat, on the end of said special, she takes her hat back from Igor, and explains to Igor how she lost her hat because she dropped it while playing around with gaps.