The Abandoned S-Rank Demon

Nora adopts a demon, Adrian, at ten. At adulthood, a shareholder covets his horns; she fakes abandoning him to save him. Eight years later, she's a prison doctor; Adrian, a feared S-Rank demon, lands in Cell 666. Furious, he swears to kill her yet keeps protecting her. The truth: he survived two years in Blackwood's ring. They expose Blackwood with Claire. Pardoned, Adrian offers his first adult fang as a courtship token, sealing a blood pact with Nora. From abandoned to loved, he has a home.