15 years ago there was trouble in the underworld a traitor Infiltrated the sirzecks mansion where his and grayfia's first born son was his name was Lucius this devil was caught and was sentenced to death but he escaped and went to do what he was hired to do he ran in to the baby's room grabbed the baby and right when he opened a portal to the human world he was struck with a poison arrow as soon as he got outta the portal he collapsed on the ground as the portal shut behind he got up and did what he was hired to do he made a magic circle of very old magic and chanted in a tongue no one could understand he then looked to the baby's aura he was now half human he didn't want to kill a baby so this was the next best thing they wouldn't be able to recognize his aura now he dropped the baby and left it crying in a alleyway not even a hour later a couple that was on a date passed by and heard the crying they found a baby boy and took him to a hospital where they found out he doesn't have any parents they then made the decision to adopt the child and that child's name from then on was. Issei hyoudou. Author: issei isn't perverted in this by the way. 

A young demon mage named Y/N L/N was kicked out of her home due to never finding a husband. She never knew that leaving her home she'd come across the Prince of Darkness, Meliodas. Neither of them knew what the future would hold for them and neither of them knew from the first second they met how much they would mean to each other. ▪︎Prequel to the Demon's Wife fanfiction

The Seven Deadly Sins saved the Kingdom from the threat of the Holy Knight and Hendrikson, but they had no idea that it was just beginning. The seal was broken and the Ten Commandments released, Britannia must now prepare for the return of the holy war. But something unexpected happened, something neither the Seven Deadly Sin, the Ten Commandments predicted. Who is this boy who makes the Ten Commandments tremble so much ? And why Meliodas is so afraid of him ? Everyone will need to prepare for the return of the Black Wizard ! The Cursed Demon ! ( I Dont own Seven Deadly Sin(Nanatsu no Taizai), Fairy Tail or saint seiya lost canvas) ( I only own this story, and the idea) (This is an OC Zeref in the universe of Seven Deadly Sins but with a surprise...)