The story begins with runaway princess Lala Satalin Deviluke winding up in Yuuki Rito's bathtub naked due to one of her inventions.
From this point, the story advances with Lala telling the shocked Rito that she is from the planet Deviluke and that
she ran away because she didn't like any of her suitors. After a run-in with the Royal Guard from Deviluke, Lala explains to Rito that
none of her suitors tried to understand her feelings, none of them listened to her, which is why she likes Rito, because even though
she was from another planet, he didn't judge her, he listened to her story and even protected her. Following these events, Rito is seen walking to school with the girl he's had a crush on for a long time, Haruna Sairenji. At this point, he tries to tell her that he's "Liked her ever since that moment.", but as he blurts the words out, Lala appears infront of him, thinking the words were for her, she tells him that she feels the same way. Rito eventually finds out that he's engaged to Lala in the way of her people. Devilukean customs are different from that of Earth's and not understanding this, Rito asks how that's possible. Lala explains that he placed his hands on her boobs, stared passionately into her eyes and told her he loves her. From here on, Rito's Love Troubles begin as he soon becomes the envy of all the guys in the school and judged by several other characters, mainly Yui Kotegawa, the school's council representative.
Personally, I enjoyed the majority of the storyline.
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my only disappointment being that Lala and Rito never wound up together as a couple.
If you're looking for an anime that's like Highschool of the Dead, filled with anime chicks with big boobs, drama, romance and comedy then I highly recommend this one. Although being an Ecchi/Harem type anime, it is still excellent. I suggest watching the first few episodes to really get a feel for the storyline if your feelings on Ecchi are neutral. If you hate Ecchi, well then, you shouldn't even be reading this review. In any case, the storyline quickly becomes addictive as more and more characters enter the picture and Rito's love troubles increase. The most notable of these characters is Zastin, the captain of The Devilukean Royal Guard, who initially disapproves of Rito but then approves of him after his statement about marriage. Zastin is seen several times throughout the storyline visiting the Yuuki residence, usually visiting for Mikan's cooking. As Zastin and Lala are from Deviluke, Rice is a delicacy for them and thus they practically worship it. Zastin, not being able to get enough of it, Is usually seen with Mikan eating a bowl of it or drinking Tea, another delicacy to himself and Lala. Despite Zastin's skill with the sword, he has a horrible sense of Direction, often resulting in him becoming lost.