Mois, Chronicle of Uncle's Hard Battles / Aki vs Cat, Mixed Martial Arts Match
Mois fills in for "Uncle" when he's out, but realizes that she's being "too perfect" as Keroro's proxy... Then Aki somehow finds herself in the underground base, fully armed and stalking the cat that stole her glasses. Source: crunchyroll
Aired 05/02/2011EP 350 - Mois, Chronicle of Uncle's Hard Battles / Aki vs Cat, Mixed Martial Arts Match
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)