TOKYO (TR) – Nearly two decades after Japan introduced a lay judge system to modernize its courts, the nation’s criminal justice system remains firmly chained to outdated, prosecutor-driven “document trials” that fuel its high conviction rate.
Atsuko Kimura is the author of “The surprising criminal justice system: how criminals are created,” which was published earlier this year by Kodansha. She writes in Gendai Media (June 10) that despite the launch of lay judge system in 2009 the justice system maintains a staggeringly high conviction rate.
When the lay judge system launched, it was hailed as a departure from Japan’s notoriously opaque “precision justice” — a system where judges handed down verdicts based on mountains of written statements (chosho) generated behind the closed doors of police interrogation rooms.
The reform was supposed to shift the focus to live, courtroom-centered debates. The logic was simple: everyday citizens serving as lay judges do not have the time to read hundreds of hours’ worth of dense, often fabricated dossiers. Trials were meant to become streamlined, focusing only on the core disputes.
However, the reality of Japanese courtrooms today tells a vastly different story.
Legal experts and former defendants warn that the rules regarding the admissibility of written confessions have not changed. Unless a defense team can explicitly prove torture, illegal coercion or extraordinarily prolonged detention — a remarkably rare ruling in Japanese courts — a defendant’s written confession is almost guaranteed to be admitted as evidence.
“Special credibility”
Prosecutors are well aware of this. Relying heavily on the Code of Criminal Procedure, they continue to exploit a legal loophole known as “special credibility” (tokushinsei).
Under Japanese law, if a witness or defendant changes their story on the stand to contradict what they allegedly told police, judges can toss out the live testimony and rely on the original written statement. Prosecutors only need to meet three conditions: the statement must be “voluntary,” it must contradict courtroom testimony, and it must possess “special credibility.”
In practice, judges overwhelmingly side with prosecutors. Vague justifications — such as the written statement being taken “when memories were fresher,” or simply “reading more naturally” — are frequently rubber-stamped by the bench. Knowing this, prosecutors meticulously craft these statements, sprinkling in hyper-specific details to make them appear highly authentic to the judges.
“Hostage justice”
But perhaps the darkest element keeping this system alive is Japan’s infamous “hostage justice” (hitojichi shiho).
In trials where suspects maintain their innocence, defense lawyers are routinely forced to “agree” to the admission of these prosecutor-penned dossiers. If they refuse to consent, prosecutors will vehemently oppose bail, arguing the suspect might tamper with witnesses. Judges typically agree, leaving the suspect languishing in a detention cell for months or even years.
Faced with indefinite lockup, many defendants are pushed to the breaking point. Even those fighting false charges are often coerced into accepting the validity of these written statements simply to secure bail and return to their families.
As a result, what was meant to be a legal “exception” has become the ironclad rule of Japanese law.
Despite the presence of citizens in the jury box, the true battleground of Japanese criminal justice is not the open courtroom. It remains locked inside the windowless interrogation rooms of the police and prosecutors, keeping the country’s staggering 99.9% conviction rate completely intact.
