Keroro Gunsou: Mushakero Ohirome Sengoku Ranstar Dai Battle

Synopsis

This short film, shown alongside Keroro Gunsou Movie 3, sets the stage for the Mushakero arc in the anime's fifth season. The Keroro Platoon finds themselves in Ranstar, a world styled after Japan's Sengoku Era, where they battle the Vipers amidst characters adorned in period attire.