This is a tale of a prince who lost everything leaves for a journey with no guarantee of returning to his hometown safely. With hatred and revenge in his mind, he met several people that taught him about friendship... and love.
Source: ANN. Will be replaced by a unique synopsis written by Anime-Planet and updated tags.
Over a century ago, mankind was devoured by giant beings of unknown intelligence and origin known as Titans – creatures that eat humans alive indiscriminately and for no apparent reason. The remaining population has managed to survive the last hundred years only by building a multi-walled city capable of keeping the Titans at bay, training military recruits to patrol the perimeter and gather intelligence about their mysterious foe. Eren and Mikasa have lived a relatively peaceful life behind the city's walls, but when a massive Titan appears, smashing the outer barrier and unleashing a wave of terror, their lives are brutally changed forever...
Although Attack on Titan is a horror/thriller, and To Aru[...] is more of a generic shounen, they both have quite interesting settings, with To Aru taking place on a floating island making a journey to the end of the sky, and Attack on Titan taking place inside it's walled city to protect it from the rampaging Titans.
Both have similar themes of the yearning for freedom, and the urge for revenge on those that killed the main characters parents, and I believe someone who enjoyed To Aru[...], may enjoy Attack on Titan a lot more, as it concentrates more on world building, and less on the dull character drama that To Aru[..] does.
As an orphan whose life is in the hands of space pirates, Coud has had no choice but to survive on bravado alone. He has nothing to live for until he finds Ren entombed amongst the treasures in the pirate ship's hold, and awakens her. In addition to being mysterious and beautiful, Ren can transform into a battle sword to help Coud fight and prove his strength -- but with this strength comes the bitter realization that power alone is not enough. Now, in a race against time, Coud must endure betrayals and fierce battles as he struggles to return Ren to her home, before it's too late...
Both Elemental Gelade and To Aru Hikuushi e no Koiuta share the same kind of typical fantesy-setting. While there plots are somewhat different, they both share some noticable similarities. For instance, Elemental Gelade tells the story of a sky pirate, while To Aru Hikuushi e no Koiuta reveals the tale of a student pilot. Also, both feature an unusual romance and an important character who is able to control the wind.
In the world of Prestal, Noble men perform noble deeds for noble purposes. All of this is performed under the careful gaze of the Guild, a race apart who live in cities in the sky. We see this world through the eyes of Claus Valca and Lavi Head, as their travels take us above, beyond and through Prestal, and their actions cause ripples that shall never fade.
If you're a fan of flying and are interested in a great fantasy world, take a look at Last Exile. Just like Hikuushi Koiuta, Last Exile centers around a boy-girl pilot duo. However, Last Exile deals with a lot of action, danger, and some really pretty flying... unlike Hikuushi Koiuta. Basically, if you're looking for a more mature and steampunk version of Koiuta, you may want to give Last Exile a try.