Long ago, the King of All Cosmos brought light to the sky and replaced the stars of the universe, giving the people of Earth a beautiful portrait and a source of great inspiration. This, as you might imagine, made the King of All Cosmos tremendously popular. And he savored that popularity until a normal family -- in a discussion about the King's awesomeness -- mentioned that the King and the local school principal were equally cool.
This horrified the King of All Cosmos. The King then confesses to his son The Prince, that he had been a bit lazy and that there was no wonder that Katamari Damacy fans were disappointed, he instructs The Prince to roll katamaris that the King can eat to make the "cosmic belly" fit once more