556, Unluckiest Partner / Koyuki, First Curry
Natsumi asks Giroro to house-sit while she's out, but then he winds up having to house-sit with 556, the worst house-sitting partner ever! Later, Koyuki convinces Kululu to teach her how to make curry, to his horror. Source: crunchyroll
Aired 04/09/2010EP 330 - 556, Unluckiest Partner / Koyuki, First Curry

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)