 If you liked
IS: Infinite Stratos
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 ...then you might like
Date A Live II
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Both series have the female character protagonists and antagonist completely dominant over society, Shidou(Main protagonist of Date A Live), is a lot like Ichika, accept the complete opposite at the same time.
They deal with mecha, and action sequences similar to the animation of 8bit studios. This show won't disappoint you at all if you are looking for something to fill the void after Infinite Stratos.