 If you liked
Sousei no Aquarion
|
 ...then you might like
Zegapain
|
Another good storyline with meca action, Characters are well developed with a ever changing storyline and aftermath affects of that on the characters themselfs, worth checking out.
Both series introduces the theme of a science fiction world where the main male protagonist is the center of it all. In fact, there is a secret that lies within him related to his past and the main female protagonist of the series is there to help him unlock his potentials.
Both series features the usage of mecha in a futuristic world set beyond our times.
Both series has drama, comedy, action, and romance later on.
Both series' backgrounds also relates to the main female protagonist as well.