Lala's been living on Earth with Rito for a while now, but he's about to get a couple of brand-new extraterrestrial guests: Lala's beautiful twin sisters, Nana and Momo! The royal twins are troublemakers, but the trouble reaches a whole new level when outer space assassins come gunning for Rito under the fireworks of a town festival. Meanwhile, Haruna makes a big decision--is she ready to admit her love for Rito?!