Keroro Gunsou: KeroZero Shupattsudayo! Zeninshuugou!

This episode serves as a prequel to the main Keroro Gunsou series and was released in theaters alongside the fourth movie. It takes place on the day the Keroro battalion is set to leave Keron Planet for Earth. While Giroro and Zeroro wait for Keroro at the Keron space station, they are attacked by a rival alien group.

Traduzione in corso — testo originale in inglese.