 If you liked
Juuni Kokuki
|
 ...then you might like
Nurarihyon no Mago
|
Similarity between these might come from the same "level of seriousness". Not totally philosophical and not gory, but on the other hand not sweet, cute or hilarious. Lots of monsters here and there (all presented in convincing way). Young protagonists with problems of role in the world and identity. NnM is more graphical (nice 3D usage) and story is not as complex as 12K, imho mainly because setting in modern Japan and not in a parallel world.