Dragon Ball Daima

Goku and his friends have just saved the world from Majin Buu, and they think they deserve some rest. Unbeknownst to them, their battle was recorded and observed by Gomah, a being who has taken the title of King in the Demon Realm. Gomah, who is allied with Degesu, the younger brother of a powerful being known as Higashi no Kaioshin, seeks to steal Earth's Dragon Balls and use them to his advantage. Gomah wishes to use the power of Shenron to revert Goku and his friends back into children, taking away their limitless power.