Ground Defense Force! Mao-chan(2002)

Ground Defense Force! Mao-chan is a comedy anime series following three eight-year-old girls tasked with an unusual mission: defending Earth from cute alien invaders. Because the extraterrestrials are adorable, public opinion demands that humanity's defenders be equally charming—otherwise the battles would be seen as bullying. Three military commanders recruit their granddaughters, Mao, Misora, and Sylvia, to form an elite team. Armed with magical clover-shaped badges that grant them transformation powers, the girls must balance schoolyard innocence with intergalactic combat. The series plays on the absurdity of waging war through cuteness, blending magical girl tropes with satirical military humor as the unlikely trio faces off against their extraterrestrial foes.