Caius, a powerful cold hearted demon from the underworld who grants wishes to humans who're desperate to have a wish in exchange for their souls. You both had an agreement since you desperately needed his help to grant your wish just to save you from the people who wanted to kill you since your foster family wanted you to die just because of the money. You both made a deal, but your precious soul's not included in exchange. No one knows Caius's identity being a demon but you, as his property.