In His Next Life The Mage Will Become The Strongest God Of Destruction

In this world, there was someone, people called him ''Sage Of All Magic'' or The "Maou Of Magic". Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, is that his [Rune] limited his growth he may be the strongest but he can no longer grow any stronger to fight what lies beyond the universe. Yet he didn't give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And he wishes to challenge all those stronger than him and claim the title as "God Of Destruction".