Sgt. Frog

Season 1, Episode 13

Episode Title: Dororo: The Forgotten Warrior / Dororo & Koyuki: Friendship, How Beautiful It Is

Air Date: 2004-06-26

Overview:

The final member of the platoon has been found, no thanks to Keroro. But Dororo has cast aside his previous life - he'll protect Pekopon from alien invaders, even if that means making enemies of his former friends.