OP

You can call him the demon slayer, master of all tongues, world traveler or dragon rider, he was the God of lightening in his previous life but in this life, he is determined to be stronger so with his OP system and his knowledge of his previous life, he will fight enemies make friends while discovering dangerous secrets that will cause destruction when it falls into the wrong hands, this is the story of the strongest Esper on his path to immortality.lg...