 If you liked
Guilty Crown
|
 ...then you might like
Zankyou no Terror
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Mysterious plot, with the "Terrorists" actually being the "good guys", Conspiracy in high levels of government, Tragedy and some very tear jerking moments, make these anime similar at a sort of surface level.
Zankyou had a far more serious, experimental and dreamy vibe to it, whereas Guilty Crown has much more fan service and typical anime troupes.
Both can be catagorized in the "emo-terrorists with psychiatric issues" category that I literally just made up.