Matantei Loki Ragnarok, Majin Tantei Nougami Neuro Recommendations
Both anime deals with unorthodox detective work and of course, demons and other mythological facts. Although Neuro is a bit darkish in tone compared to Loki, both will satisfy any detective-themed anime fan's delight. ^__^
This one is full of action, adventure, comedy, mystery, supernatural... overall you will enjoy it.
Both shows are about detective angency's...solving mysteries...both shows have supernatural theme;if you liked one you'll like the other too.
Both anime are trying to solve mystery cases using their power with the help of a high school girl. One anime using demon power while other anime using god power