Keroro VS Giroro, Duel in the Cold Rain / Keroro Platoon, Big Year-End Party
Natsumi's stuck at the store and needs an umbrella to get home. Keroro and Giroro fight for the right to do it! Then Keroro orders a drink (it's not alcoholic, really!) that makes the platoon act like a bunch of drunken idiots for New Year's Eve. But it has a funny twist. Source: crunchyroll
Aired 18/12/2010EP 345 - Keroro VS Giroro, Duel in the Cold Rain / Keroro Platoon, Big Year-End Party
Sgt. Frog
Keroro is a frog-like alien sent from his home planet on a mission to conquer Earth. But when his cover is blown, his battalion abandons him and he ends up in the home of the Hinata family. There, he's forced to do household chores and sleep in a dark basement that was once supposedly a prison cell haunted by the ghost of an innocent girl. He even spends his free time assembling Gundam model kits. During his stay, Keroro meets up with subordinates who were also stranded during their failed invasion.
(Source: Anime News Network)