Suteki Tantei Labyrinth

Both of the stories have young children solving cases beyond adult capabilities. Although Labyrinth does contain more fantasy, they have similar plot lines and anyone who enjoyed Gosick will most likely enjoy Labyrinth too. 

Similar atmospheres, although while STL opts for crass humor and shies away from a motivated plot or deep characters, GA holds to cleaner comedy and takes most opportunities forgood angst and believable storylines. Moreover, if you loved GA, don't watch STL, you'll be disappointed. *But* if you enjoyed STL at all, you *have* to watch GA! I personally love it. :) 

Suteki Tantei Labyrinth is about a boy detective which is a bit similar to Loki and since both of them have some super special ability. They are very similar to each other 

-Both story involve a child with supernatural power to solve everything. -Both story involve a child who need to get protected by their guardian or butler. -Both story involve a child who could not done anything by themselves. -Both story involve a child who live by themselves with their guardian without their real parents. -Both contain a bad guy who want to get the special power. -Both contain a childhood friend who become their guardian or butler. -Both contain a bad guy who want to reach their target and will do anything for it. -Both contain a cute child (main character) who get liked by everyone and has lots of friends and easy in making friends. -Both contain a task that are given to them to solve the mystery. -Both story are about their adventure and solving mysteries.  read more 

-Both story involve a child with supernatural power to solve everything. -Both story involve a child who need to get protected by their guardian or butler. -Both story involve a child who could not done anything by themselves. -Both story involve a child who live by themselves with their guardian without their real parents. -Both contain a bad guy who want to get the special power. -Both contain a childhood friend who become their guardian or butler. -Both contain a bad guy who want to reach their target and will do anything for it. -Both contain a cute child (main character) who get liked by everyone and has lots of friends and easy in making friends. -Both contain a task that are given to them to solve the mystery. -Both story are about their adventure and solving mysteries.  read more 

Both of these anime feature the dark supernatural and have the gothic style to them. 

These two Anime have simular styles to them that happen to have crisp outlines, vibrant gothic colors and intricate details. Both are also aimed towards a simular age audience. 

Both are mystery anime, though Zettai Shounen is a little more slower moving than Suteki Tantei Labyrinth. I enjoyed both of them very much, so give 'em a try. =D 

Both are mystery shows that came out in the same season, centered around an eclectic group of children and adults. Both have supernatural elements and a child-detective, although in Majin Tantei she's just a front for the mystery-solving demon whereas in Suteki, the boy is a genius. 

They are both mystery series, though Ayatsuri Sakon plays in it more. What drove me to recomend it more was the concept of 'puppets' that run through both shows. Also, the opening to Suteki Tantei Labryinth has some things that remind me of the closing for Ayatsuri Sakon. 

The two main characters remind me of each other, except I am more liking of the main character of Pandora's heart as the one in Suteki Tantei Labyrinth is even more naive and tends to see the world through rose colored glasses. 

Suteki Tantei Labyrinth is like a cuter version of Kuroshitsuji. Both involve a young boy with special powers and his butler(s). The style in clothing and character design is similar in some point and both main characters solve detective cases.