Happy End: Conquest

Taking place one year after the events of "Happy end". Giroro and Natsumi have created a happy life together on the now desolated planet Earth, taking care of Keroro and Tamama and raising their newborn son, Teri. But just as Giroro's long life as a soldier has taught him; when happiness is present, tragedy isn't far behind. (Rated M for blood and gore) (WARNING: character death)