Is it the Adivon library?

A blonde anime character with white wings stands in a dimly lit area, then the scene cuts to a close-up of a character's legs in a snowy forest, followed by a shot of the blonde character lying on the ground with a red X on her forehead, before returning to the initial standing pose. The sequence repeats, showing the character in a looped cycle of standing, being defeated, and returning to a standing position.