It's an interesting anime, it's had comedy,romance,harem and hentai category in one anime.. interesting right ? The story begins when Rito Yuuki (the brown hair) is in love with Haruna (the purple hair), he in love with her since they were in junior high.. Rito tried to confess his love but it always failed of some ridiculous reason (like he stomped by animals, sumo, or being hit by a ball). Ok, he keep tried until he's in high school.. When he decided to confess his feeling, another strange things coming again, this time it's UFO. He come home, desperately and he make a wish to get along with girl, until Lala (the pink hair) the alien girl showed up naked in his ofuro. Rito that shocked, accidentally groped her breast that's mean he is proposing her in Deviluke planet (where Lala is living).

After explaining about her self, Lala is being caught by some of her security guard but Rito saved her. Lala fall in love with Rito and she approved Rito proposal. Rito that didn't understand trying to said that it is a mistake.. he tries many way to groped her breast to cancel the proposal because it's the only way and the fact that he's in love with Haruna. Unfortunately, he failed and he became Lala fiance.. Lala has a friend that can became her outfit called "Peke". They became friends and met Yami (Golden Darkness) that wanted to kill Rito at first, Yui (Rito friend), Mikan (Rito's sister), Ren aka Run (the one that can change gender), etc. After he finally settle with his position as he fiance, Lala father, the king Deviluke came and see him, he want Rito to be the greatest of the universe before he married his daughter, Lala. He give Rito a challange to go to his space ship or he will destroy the earth. but lucky with help of his friends, Rito can complete the challenge and about to marry Lala, but because he love Haruna he doesn't want to marry Lala. Lala that knows something wrong with Rito wanted to cancel the marriage and choose Rito happiness, but also she also tried to make Rito fall in love with her.

Andd.. if you asked is it ended right there ? the answer is NO.. there still the season two called "To Love Ru Darkness".

It' s tells about Lala twin sisters Momo and Nana came to earth and live along with Lala and Rito in Rito's house because they were lonely. Nana doesn't really like Rito because he thinks Rito is prevert. but in the other hand, Momo love Rito and want to monopolized him as well. Lala knows that Rito love Haruna, and Rito already confess to Lala that he love her as well, so Lala giving him a chance to marry her as a queen and take Haruna as his concubine, because it's legal in her planet. Rito seems interested in that offer. Meanwhile, Momo that know that, make an excuse to make a Rito harem by making all Rito's friends in love with Rito, so he can takes many concubine and it will also include Momo. Momo really likes Rito, every night she sneak in Rito's bed and sleep with him half naked. Yami that already lived with them finally met her sister Mea that also a weapon that wanted Yami to return to her old self and kill Rito. In that progress, Yami met her mother, Tear that makes a replica of her to produce Yami.