The Sin of Despair Seven deadly sins x male oc

3000 years ago before meliodas left when was was convincing zeldris to come with him which he denied as normal he game him a baby which was kenji to take care of because he wouldn't be safe with the demon king so meliodas sealed him away for the time being until the holy war ended and he was then unsealed and spent that 3000 years with meliodas and the elizabeths.

Then much later
He becomes an honorary member of the seven deadly sins referred to as the wolf son of despair he meets a young purple haired girl which he gets quickly attached to a regularly trains with
But the incident happens and he has to leave with meliodas

So now the demon vampire hybrid goes on adventures with his uncle and the sins along with a familiar girl