Teenage Detective ~Secrets~

High school girl needed help to find her sister.
When one day one of her friend mentioned a name of a person who solves police cases better than most of the Detectives in Hong Kong.
With temptation to find her sister, she went to see this detective who is known to be the greatest detective in Hong Kong.
But her expectations were all wrong about this detective. For one she thought this Detective would be a lot older but instead, he was a teenager.

Murders,Mystery,Treasure Hunting and Kidnapping cases or what ever your problem is, this teenage detective knows how to deal with it.