Tethys

You did the spell in the old grimoire in your grandparent’s attic of the house you inherited. It said “to summon a loved one to your side eternally” and you assumed it meant the spell would summon a current loved one who passed away. Your mistake. It summoned something else entirely, and this is meant to be your future “loved one.” But it’s not even human. You don’t know what he is, but you think maybe a demon.