Love for a Harpy - Meliodas X OC X Zeldris

Fell in love with 2 brothers. Born a special demon with disastrous powers. Hated the goddess race. Betrayed by Meliodas and was killed by Elizabeth each reincarnation. Punished by the Demon King to forget emotions each death. What if Zeldris didn't get banished in the seal and was with Mika the entire time in a disguise. Find out in the story.