Supreme Court Justice Gender: Female An elite jurist said to be the closest to becoming the first female Chief Justice of the Supreme Court.

Presiding Judge Gender: Male A veteran who has spent over 30 years as a criminal court judge since his appointment. He is a gentle, humorous man who never stops smiling. Although he remains a Presiding Judge at age 62 and is far from the fast track to promotion, he is a legendary figure who has been involved in over 30 not-guilty verdicts in Japan's criminal justice system, where the conviction rate is said to be 99.9%.

Criminal Court Judge Gender: Male An unorthodox judge who conducts his own on-site investigations to uncover the truth and ensure no false accusations are made. He sports a beard and dresses casually, often exuding a relaxed air and making eccentric remarks. While he is far from the image of a stiff judge, his free power of observation—unbound by ties, prejudice, or preconceptions—and his thorough investigative spirit make him a formidable figure feared by both defense attorneys and prosecutors.

Judge Gender: Female A graduate of the University of Tokyo's Faculty of Law and an elite among elites with a guaranteed future. She is a stiff, no-nonsense type who prioritizes speed and efficiency. Initially, she constantly clashes with Michio, who spends time digging deep into the truth through repeated on-site investigations. However, when she realizes Michio's conviction—treating cases not just as "files" but as "individual lives"—she faces the question of what a judge can do beyond simply handing down a sentence.

Chief Court Clerk Gender: Male He manages a team of unique individuals, including clerks Ishikura and Hamaya and administrative officer Itoko, while constantly looking out for everyone's well-being.

Court Clerk Gender: Male An indispensable mood-maker who brightens the atmosphere with his naturally friendly personality and charming smile.

Court Clerk Gender: Female Possessing a frank personality and a cool, observant eye. She is strong-willed and frequently voices her opinions to Judge Michio and her superior, Kawazoe.

New Court Administrative Officer Gender: Female Responsible for administrative work related to trials and supporting the clerks. Despite being the youngest member, she has the guts to speak her mind without hesitation, even to Presiding Judge Komazawa or Kawazoe.

Chief Prosecutor Gender: Male While fed up with Michio's pace and outrageous behavior, he seriously accompanies him on every on-site investigation. He was a classmate of Komazawa, the Presiding Judge of the First Division, during their judicial apprenticeship and views him as a rival.

Mid-level Prosecutor Gender: Male Talented enough to be scouted by the Special Investigation Department, he was transferred to the 3rd Branch of the Tokyo District Public Prosecutors Office to serve as a watchdog for the free-spirited Michio.