Ten years ago, Senpeita Kobayashi fell in love with the girl of his dreams; she left his life, but promised that in ten years she’d see him again and become his bride. Fast forward to the present, and Senpeita is a typical student attending Akebono Academy. That is, until the wide-eyed tiny robot Kemeko crash lands in his bedroom and proclaims herself to be Senpeita’s new bride! As if things aren’t strange enough, Senpeita soon discovers that inside Kemeko is a beautiful girl – a girl who has an uncanny resemblance to his lost love! All Senpeita wants is to be a normal boy, but now he must keep himself out of the way of flying fists, raging jealousies, and battles between Kemeko and Mishina – a global corporation that has a vested and dangerous interest in Senpeita!
Keitaro Urashima is somewhat of a failure. In order to fulfill a promise he made to a girl fifteen years ago, he has tried time and again to get into Tokyo U but has never managed to pass the exam. However, fate smiles upon him and he ends up working for his aunt, managing an all-girls dorm! Living with the feral Kaolla, the timid Shinobu, the sake-loving Mitsune, the blade mistress Motoko and the punch-happy Naru, can Keitaro keep his focus and keep his promise? And will he ever end up meeting that girl from his past?
Both of these anime's are based off a dream by the male protagonists to find the 'girl of their dreams'. Both have a memory of their childhood wherein a girl who they liked back then suddenly disappeared. The love side of the story mainly centers around the childhood friend and finding them (although it can be forgotten).
In another reality protected by a sentient portal lies the Magician's Academy – a facility for learning about the magical arts and the power of summoning. Takuto Hasegawa is one such student who must balance his life on Earth with his life at the Academy. His life was relatively normal until one day, he summoned a naked creature who he dubs Tanarotte, and who subsequently becomes his servant. Takuto must now care for this busty beauty, but it won't be easy – representatives of both the god and demon realms want to put a stop to Tanarotte's existence, for once she chooses to become a god or demon she will throw off the balance of power between the two kingdoms. Now, Takuto finds himself in the middle of a variety of ecchi and cleavage-heavy situations as he tries to continue his studies, while slowly and inadvertently acquiring more scantily-clad women that he must watch over.
Both series share a lot of elements. First of all both are ecchi/parody animes. They have similar design, "loli" or "moe" charcaters with big tits. And the two of them mixes aliens, magics and tecnology. Both bases great part of the jokes in references to mangas and videogames.
In the present, the Japanese government has been conducting experiments to genetically engineer a human: a girl named Rizel. The experiment was a success -- sort of. While healthy and cheerful, 12-year-old Rizel also ended up possessing the uncanny need for “love” to further her development, as well as tears which were in fact volitile explosives! When sadness can end up destroying a city block, what's a girl to do except... get married?! For Iwari Tomori, the young man chosen as the most appropriate partner for Rizel, life is about to change, for better or for worse!
Minato Sahashi was living a normal life; he had just failed his college entrance exam for a second year in a row, and lived a quiet life in a single's apartment. That is, until the busty Musubi fell from the sky on top of him! She is a Sekirei, one of 108 that are destined to fight each other until only one remains; and he or she will ascend to heaven with his or her chosen one known as an Ashikabi. Minato soon finds himself in the embrace of Musubi, becoming her Ashibaki - but his life will only become more complicated. Musubi isn't the last to claim Minato as her Ashibaki, and what's worse, plenty of other Sekirei and opponents stand in his way!
Both shows center around a boy who's suddenly forced to be with an extraordinary girl. While Sekirei is a bit more serious than Kemeko Deluxe!, they're both very funny and provide the right amount of action and dialogue without boring you to death.
Rito Yuki is a bumbling boy who wants nothing more than to confess his love to the lovely Haruna, but a variety of obstacles always seems to stand in his way. One day, while relaxing in his bathtub Rito found his hands full - literally - with the breasts of a strange alien girl named Lala who suddenly appeared in his lap! She is the princess of Planet Deviluke, and she has run away from home to escape the prospect of an arranged marriage; and unfortunately for Rito, his accidental groping is the traditional engagement ritual of his otherworldly guest! Deviluke's emperor will destroy Earth if Rito backs down from his "proposal," but all he really wants to do is be with Saruyama! Naked antics, magical powers, misunderstandings, Lala's marriage-happy family and Rito's own shyness are many of the barriers he must face in his attempt to win the real love of his life – that is, if Lala doesn't win him over first!
The premise of these two shows is almost identical, as is the animation style. Both series are about a pink-haired alien girl appearing to a high school boy's life and causing all sorts of havoc with hilarious consequences, without forgetting the romance side of things with the addition of a human girl love interest for our male main character.