WONDER MOMO

One day, a group of aliens planing to take over the Earth invade Tokyo. Momoko, who aspires to be an idol, gets involved in the fight in an unexpected form. Warudemon, king of the alien empire, uses various tactics to hunt down Momoko and the people around her. Momoko has decided to stand up to the Warudemon plain and simple. — Description from AniList community (anilist.co).