Ground Defence Mao-chan(2003)

Rikujou Boueitai Mao-chan

Japan has been invaded by aliens–but this is no ordinary assault. These extraterrestrials are cute and extremely dangerous. Their mind-blowing powers are way too much for the military. Enter Mao-chan, the daughter of a great general, and her charming best friends–Japan’s only hope against this massive attack of the adorables! (Source: Del Rey)