 If you liked
Pandora Hearts
|
 ...then you might like
Dansai Bunri no Crime Edge
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They're not too similar in terms of premise but both Pandora Hearts and Dansai Bunri no Crime Edge has that majestic/fantasy like atmosphere. As such both series has some supernatural features such as the action and drama.
Both series' main male protagonist also has a normal personality while maintaining a peculiar relationship with the main female protagonist.
In both series, there are antagonists that plays various roles that often puts some characters and events at risks.