DESCRIPTION:
This is Sakuya Izayoi's theme from Touhou 10.5: Scarlet Weather Rhapsody

Knives... knives everywhere...
Sakuya's ballistic animation where her eyes turn red and she flails her arms wildly as thousands of shape-edged blades hurtle towards you with fantastic accuracy... that's Sakuya's true form. Her maid thing is just a bewitching trap. This theme is proof of that. Her eyes are blue for this theme, for her perfect elegant maid persona. However, during Lunar Dial, her eyes are blood red, and show the true face of a murderous killer.

Jack the Ripper would be proud.