where kokichi works as a double agent for the government though no one really knows about it other than Kirumi (who is the prime minister) and Rantaro (personal assistant and double agent of Kirumi).
Kokichi Runs by different aliases and stealing that it got the attention of Detective Shuichi. He has basically grown overly interested to the case (especially after the agency just disclose it?? There must be a reason to why? And why him?)
By thorough investigation he finds the usual spot the spy can be seen is different piano recitals where a Pianist by the name of Akamatsu, Kaede always performs on.
He was about to go investigate more about Kaede but It was actually Kaede who barges in his office telling him that she has more clues about the mysterious thief.