6 decades books

Mr. X a Wind elemental Archmage and the most famous detective in the entire world. He took 32 cases and never failed to solve any of it. No one knows where he lives or how he looks; not even do they what his real name is. Join him as he takes up new cases, all in search of a certain organization, that is currently being termed as the most dangerous organization of the underworld. Who is he? What history does he have? Why is he looking for them? What is his relation with this organization?