Dragon Ball: 1x37

Enter Ninja Murasaki

After infiltrating the pitch black fourth floor, Goku is hit by Master Sergeant Murasaki’s ninja attacks. He has a difficult battle against these relentless attacks! But Goku reads Murasaki’s movement, and his attacks turn the situation around. Goku breaks through Murasaki’s ninjutsu, one after the other. Finally, Murasaki’s sword breaks! Murasaki challenges Goku to an unarmed match, and Goku puts away the Nyoi-Bo. Murasaki takes advantage of this opening to throw a boomerang shuriken. Goku is caught off guard, and is hit directly in the back of the head!! Goku is in grave danger!!