Kai Honma and Jiro Ichinose are cadets at the police academy. Kai is smart, diligent and has excellent memory. At the police academy, he works on criminal profiling. Unlike Kai, Jiro is in excellent physical condition. He has a warm heart and honest personality. Kai and Jiro get involved in cases while at the police academy. Based on knowledge they gained from their training, they solve cases with help of fellow cadets and detectives. During this time, Kai and Jiro become best friends.
