GodDisciple
If his power was sealed, he might as well learn the art of the seal from Naruto, Technically being an apprentice for destroying god he should know dragon ball sealing arts, like bills when sealing the elder hakaishin of 15 generations. So should the protagonist go to various worlds to learn their different energy styles and seals to fuse all the methods into one ultimate anti-seal power, May you bring out the best of all the worlds you visit.