Dragon Ball DAIMA - S01

After defeating Majin Buu and saving the world, Goku and his friends are ready to relax. But their fight was secretly watched by Gomah, a new ruler in the Demon Realm who took over after Dabura's death. Gomah is aided by Degesu, the younger brother of Higashi no Kaioshin-a being who governs the universe. Envious of his brother's power, Degesu helps Gomah steal Earth's Dragon Balls to eliminate future threats. Using Shenron, Gomah wishes for Goku and his allies to be turned into children, stripping them of the strength that once defeated Buu. With Earth's strongest warriors weakened, Gomah kidnaps Dende, the planet's guardian god. But Goku won’t let his new body stop him. He trains to fight just as well in his younger form. Teaming up with Kaioshin and a mysterious demon named Glorio-who seems to oppose Gomah-Goku heads to the Demon Realm to save Dende and reverse his friends' transformation.