Mihir is nothing but young boy 16 year old.
At young age his parents died leaving him alone in this cruel world. Since the death of his parents he was leaving alone till the age of 16.
His dreams is to be detective and he will do anything to become one.
...And just like he wanted he got chance to join detective squad named Mr.Detective.
This was just first step towards his goal to achieve his dream to be greatest detective in world.