Sergeant Keroro Chibi Kero: Secret of the Kero Ball!? (movie)
ちびケロ ケロボールの秘密!?- Production country: Japan
- Producer: Nobuhiro Kondo , Susumu Yamaguchi
- Release date: 3/17/2007
Movie description
Tells of the adventures of a young Keroro and Giroro back on Keron when they get trapped inside a prototype Kero ball.