The saddest murder of the strongest SP

Norito Izawa and the investigation team have been able to produce results in their inquiries. As a result, the top echelon of the police department begin to try and support them in pushing them further up the ladder. Meanwhile, a new target arises in the horizon for the investigation team. As a skilled individual in all forms of physical combat, their next focus is on an SP, who may be a potential danger to society?!