 If you liked
Freezing
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 ...then you might like
Campione! Matsurowanu Kamigami to Kamigoroshi no Maou
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Both are ecchi animes packed with action scenes and include some sort of superpower. Both also present cooperation between boy(s) and girl(s) in fights. Although campione is a little softer on the ecchi side (tends a little bit more to romance sometimes) they`re both very enjoyable.