 If you liked
Rozen Maiden
|
 ...then you might like
Mahou Shoujo Ikusei Keikaku
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Rozen Maiden season 1 and season 2 and Magical Girl Raising Project are both similar in that they involve magical girls who have to compete against each other. Raising Project has a lot more violence and blood, but both shows get darker and more dramatic as they progress. Recommended if you like survival anime shows with girls!