 If you liked
Spiral: Suiri no Kizuna
|
 ...then you might like
Majin Tantei Nougami Neuro
|
Both deal with mysteries that require alot of thought and effort put into them, with both lead males are very intelligent. They both have rivals that are "gifted" in Neuro it is the new bloodline and in Spiral it is the blade children. However, in Neuro it is much clearer who the bad guys are,but in Spiral its a little harder to comprehend what good or bad is.