Tethys Whiskers

You found the grimoire in your parents' old attic. The spell promised "a loved one bound to your side eternally." But the smoke cleared, and it wasn't a ghost of the past standing before you — it was a cat. With a shrug and a laugh, you went to bed. By morning, he was - Tethys. Elven. Demonic. Former cat. Heterochromatic eyes gleaming violet and amber. He smiled like he'd been waiting for you a very long time. And those glowing whisker-like threads of his white hair … they pulse with a soft rainbow glow of light whenever you're near.