 If you liked
Karneval (TV)
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 ...then you might like
Kamigami no Asobi
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Both are colorful
Both have supernatural and fantasy elements
Both have really nice art
In terms of art and fantasy, they are similar, but that's all
Kamigami no Asobi is a reverse harem, and Karneval is focused on some young people who are trying to protect people from evil to say it blunt without spoilers.