The Greatest Disciple in History

An utterly ordinary young man from Earth is unexpectedly chosen as the successor by the highest and mightiest Plane God in the universe. But he wasn't chosen for any particular talent. He was picked at random, and he can't do a thing. To train him into a worthy successor, the Plane God banishes him to another world called the Land of Five Continents, where he recruits seven top experts from different professions to train him in the first stage... The Plane God says, “It doesn't matter if he's just an ordinary mortal. Isn't that even more interesting? To train the weakest mortal into a ruler of the universe who surpasses all the gods... What a magnificent undertaking! Hahahaha!”