- Kuryu Kohei (Kimura) is a young public prosecutor who gets transferred to a division in Tokyo. Unlike a typical prosecutor, Kuryu dresses casually and ignores standard procedures, but his brilliant instincts and determination make him well-suited as an investigator. He espouses a very strong sense of justice, and his idealism has a big impact on his colleagues.
Amamiya, his assistant, is aiming to be promoted to the position of a prosecutor. At first, she and Kuryu get along very poorly, but working together eventually leads to a relationship that borders on romance.