Emperor Pilaf Steals the Dragon Balls

Watching Turtle carry Master Roshi away until they vanished over the sea, He-El, Goku, and Bulma lowered their waving hands. "Big Brother He-El, hurry up and teach me that thing!!" Goku eagerly threw punch after punch, his fists leaving afterimages. "Sure. I'll teach you how to use Ki to strengthen and control your body. Your punches will become much faster than they are now." Seeing Goku so enthusiastic, He-El did not want to spoil his mood and prepared to teach him how to use Ki.