Sgt. Frog Episode 90: Keroro, I Cannot Say Merry Christmas
Episode 90 of 358 of Sgt. Frog, aired December 23, 2005, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Even though it`s Christmas, Sergeant Keroro and his platoon are facing a crisis: a research commission from Keron is coming to Pekopon at midnight to see some results of the invasion... and if the commission isn`t satisfied, the alien frogs are to be shipped back home! Keroro rounds up the troops and they finally come up with a plan to fool their visitors into thinking an invasion has taken place, but will they have time to implement the ambitious project? Source: crunchyroll