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...)

A boy was born into the Gremory family, but he was different from other devils. The more the years go by, the more his thirst for power and knowledge only increased and he realized that his place was above the others. He won't let anyone get in the way of his ambitions... Every living being will have to prepare for the birth of The Perfect Being ( I don't own Highschool dxd, Kimetsu no Yaiba( Demon slayer) or any reference to any other fiction in this story ) ( My OC is simply Kibutsuji Muzan with certain personality traits and power of several characters from other manga)