Magus of Infinite Mana

An explosion was released as an large door spanding about 8 meters in height and 4 meters in width was destroyed to ash, The Heroes of Camelot has destroyed the doors of the evil Demon King’s castle and has walked in it’s grounds. But what they have found is the Demon King's corpse and their mission to save Camelot has already been done long ago but who? Who has killed the demon king? That was the running question for Our MC's dreams lately but these dreams had a deeper meaning to everything and what he thought was normal and real was flipped upside down as he realize that the real world had secrets that you will only see myths and legends a fantasy. Join Arai Eizan to his journey of being known as The Magus with infinite mana {Synopsis might be a bit bad but that's the best I can do} {Art isn't mine}