Japan's ruling Liberal Democratic Party has approved amendments to the Criminal Procedure Law that would fundamentally restrict prosecutors' ability to appeal retrial decisions, marking a significant shift in the country's criminal justice system. The changes, set for cabinet approval on May 15, 2026, according to NHK, aim to address longstanding concerns about wrongful convictions and the difficulty of obtaining retrials in Japan. The proposed amendments would prohibit prosecutors from filing objections when courts decide to grant retrials in criminal cases. This represents a major departure from current practice, where prosecution appeals have often delayed or prevented retrials even when new evidence suggests a miscarriage of justice. The restriction would be written directly into the main text of the Criminal Procedure Law, giving it stronger legal standing. For foreign residents in Japan, these changes reflect broader efforts to reform a criminal justice system that has faced international criticism for its high conviction rate—exceeding 99 percent—and limited avenues for challenging wrongful convictions. While most expats will never face criminal proceedings, understanding the legal framework is important for anyone living in Japan long-term. The retrial system, known as "saishin" in Japanese, allows convicted individuals to request a new trial when significant new evidence emerges that could prove innocence. However, the current system has been criticized as overly restrictive. Even when lower courts have agreed to grant retrials based on compelling new evidence, prosecutors have frequently appealed these decisions, creating lengthy delays that can span years or even decades. According to NHK, the ruling party's General Affairs Council approved the amendments on May 14, 2026, following deliberations within the party's joint committee. The legislation will now move to the National Diet for debate after cabinet approval. This marks the culmination of discussions by the Legislative Council, a government advisory body that has been examining retrial system reforms. However, legal experts and defense attorneys who participated in the Legislative Council's deliberations have emphasized that significant work remains. At a press conference on May 14, according to NHK, lawyers who served on the council's subcommittee stated that the reforms do not represent "the end" of necessary changes. They specifically highlighted the need for improved evidence disclosure procedures, suggesting that prosecutors should be required to share more information with defendants seeking retrials. The evidence disclosure issue is particularly significant. In several high-profile wrongful conviction cases in Japan, crucial evidence that could have exonerated defendants was not made available to defense teams until years after conviction. Critics argue that without stronger evidence disclosure requirements, even the prohibition on prosecution appeals may not be sufficient to ensure fair access to retrials. Yahoo Japan reported that the final legislation represents a compromise between the LDP and the Ministry of Justice, with both sides making concessions during negotiations. The phrase "painful compromise" suggests that some parties wanted either stronger or weaker restrictions on prosecution appeals. For the expat community, these legal reforms are part of Japan's gradual modernization of its criminal justice system. Previous reforms have included the introduction of lay judge trials and limited plea bargaining systems. While foreign residents are statistically less likely to face criminal charges than to deal with immigration or civil matters, the evolution of criminal procedure law reflects Japan's engagement with international legal standards. The amendments will require National Diet approval before taking effect, and lawmakers are expected to debate remaining concerns about evidence disclosure and other procedural protections. Legal observers will be watching closely to see whether additional reforms follow this initial step toward limiting prosecution appeals in retrial cases.