Keroro: I Couldn't Say Merry Christmas, Sir!

Keroro: I Couldn't Say Merry Christmas, Sir!

Available on Prime Video, Crunchyroll
S2 E39: Even though it's Christmas, Keroro and his platoon are facing a crisis: a research commission 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.