Keroro Gunsou (Sergeant Keroru) 09 is a Japanese collectible card game published by Bandai in August 2009, representing Bandai's entry into the Keroro Gunsou card game market distinct from Kadokawa Shoten's earlier 2006 release for the same franchise. The anime adaptation of Mine Yoshizaki's manga remained on air continuously from 2004 through 2011, sustaining consistent merchandise production throughout that period, and this 2009 release reflects Bandai capitalizing on the franchise at a mature point in the show's run. Individual Keroro cards from the 2009 Bandai series surface occasionally on secondary markets, confirming production and distribution. Beyond publisher, year, and franchise, detailed information about the game's rules, card count, and any expansion releases remains sparse in accessible sources, making this a title whose full documentation sits just beyond reach.
Source: en.wikipedia.org/wiki/Sgt._Frog