Kohei Kuryu is a former juvenile delinquent who drops out of junior high and goes on to earn a high school equivalency diploma. After passing the law board exams, Kuryu becomes a prosecutor. Not your typical prosecutor, which is quickly seen through the clothes that he wears, Kuryu possesses quick instincts and a kind of cleverness that only someone raised on the streets could have.

Maiko Amamiya is a shrewd public prosecutor who has her eyes set on passing the exam to become a deputy prosecutor and tries her best to be noticed by her boss. Kuryu, on the other hand, after earning a reputation for doing top-notch work, is transferred to Amamiya's division, and finally opens his eyes to the possibility of promotion. Unfortunately, his unprecedented work behavior abruptly brings things to a halt.

Although earning a reputation as a bad apple, the influence from Kuryu's strong pursuit of justice slowly begins to change things around him.