Sayu is a digital isolated who is controlled by 4 operations, during her performance the motion operator knocks a soda over messing up her movements, then the voice actor sneezes knocking over a plug corrupting her voice, her designer then panics but accidentally types in the wrong code changing her looks from cute to scary with sharp teeth, and exposed rib cage and claws, and the one who controls her behavior trips over on his computer, causing sayu to become feral, the damage is irreversible