Yuuki Rito is your average high school n student-awkward, shy, and hopeless when it comes to confessing his feelings to n the girl of his dreams. But one day, a beautiful woman suddenly materializes in n his bathtub! Her name is Lala Deviluke, an alien princess on the run from an n intergalactic empire.

After Rito gets unwittingly engaged to Lala, he soon finds n himself sucked into a battle for Lala's affections, as alien suitors from across n the galaxy vie for her hand in marriage. Rito's troubles have only just n begun! n