 If you liked
Tengen Toppa Gurren Lagann
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 ...then you might like
Kurokami The Animation
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Kurokami has not the same epic plot as Gurren Lagann, but both of their main characters are battling against their destiny and trying to change it in order to live their lives.
It's supposed that the main character can't change his fate, living bounded to it with the thought that it has to be in that way, but somebody make him change his mind and want to live his life on his own way.