 If you liked
Karneval (TV)
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 ...then you might like
Hakkenden: Touhou Hakken Ibun 2nd Season
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Similarities:
Both have the same supernatural, action, and shounen genres, a yaoi element in them, and involve young boys with special abilities.
Dissimilarities:
One has a second season, while the other doesn't. The MC in one anime is a damsel (or boy) in distress, while the MC in the other anime is the one who kicks ass. One anime has a very corny ending, while this one... you'll just have to wait and see.