The tomb of Ib Lone Laz

A dark, grainy scene shows a female anime character with long dark hair, her face partially obscured by a hand holding a knife to her head, set against a splattered background. The image fades to black, then transitions through a swirling purple and white abstract effect into a close-up of a different female anime character with short purple hair, who appears in a state of shock or distress, reaching forward with her hand as if trying to stop something, before the image cuts to a blurry, fast-moving scene of figures in a snowy environment.