Yuuki Rito is your average high school
student-awkward, shy, and hopeless when it comes to confessing his
feelings to the girl of his dreams. But one day, a beautiful woman suddenly
materializes in his bathtub! Her name is Lala Deviluke, an alien princess on the
run from an intergalactic empire. After Rito gets unwittingly engaged to Lala,
he soon finds himself sucked into a battle for Lala's affections, as alien
suitors from across the galaxy vie for her hand in marriage. Rito's
troubles have only just begun!