What kind of an orb is the Golden Orb?

Legendary Brave Swordsman Yaiba · Episode 19 · “What kind of an orb is the Golden Orb?”

Kurogane Yaiba is a boy who doesn't want to become what any regular kid would: He wants to be a samurai. That's why he undergoes a hard training with his father, knowing only the forest as his world. Then, one day, he is sent to Japan, where he has to deal with a whole new civilized reality,...