Crow (Atelier Resleriana)

Crow is a character from Atelier Resleriana: Forgotten Alchemy & the Liberator of Polar Night she is a Villain.
A girl who hides her true face behind a mask. People call her the "crow" and fear her because she appears from the shadows and then disappears as if melting into the shadows. For some reason, Valeria is relentlessly targeted by Crow.