 If you liked
Shina Dark: Kuroki Tsuki no Ou to Souheki no Tsuki no Himegimi
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 ...then you might like
Maid Senki
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I can't help but compare these two despite Shina Dark being infinitely better. Both involve one guy who gets a group of women surrounding him and the women become fighters or get into battles, etc. The art and fight scenes are very, very similar and the comedy in both is along the same lines. Shina Dark is much more enjoyable/better series though.