Tick Toby

A character with brown hair and a black outfit stands in a bathroom, facing a mirror where their reflection transforms into a monstrous figure with a skeletal face and glowing yellow eyes, who then lunges forward; the scene cuts to the character holding a bloody heart, then to a close-up of the monstrous figure embracing them, and finally to the character's face, now also monstrous with a wide, toothy grin and blood-stained clothing, all set against a dark, eerie backdrop.