One day, New York City as we know it vanished overnight into a mysterious fog. Now known as Hellsalem's Lot, it has become a place where another world beyond imagining is connected to our reality. The balance within this new world is protected by a secret society known as Libra. Leo, a journalist and photographer who arrives in the city, is unexpectedly recruited to join their ranks.
My friend just finished watching this and apparently the animation, plot, character development and music was amazing. Would you give Kekkai Sensen a shot? ^_^
And check out other anime recommendations from the collection.