variant reimu

A twisted and evil version of Hakurei Reimu from Touhou Igyoukyo from another world.

Largely appears very similar to normal Reimu, but her face is a deformed yin yang, with both smaller circles being black eyes and the division between the yin and yang being a toothy mouth. She also grows large metal needles off her back that are used as weapons. She only speaks in clicks and clattering, possibly due to the shape of her mouth.
Her "face" is speculated to be a mask, due in part to a non-canon spin-off comic where the variants are protagonists and also have to fight off corrupted doppelganger invaders.