This article examines the Japanese legal system and its high conviction rate of around 99%. It looks at factors that influence the guilty rate in Japan, such as strong prosecutorial powers, strict evidentiary rules that favor prosecutors over defendants, cultural norms discouraging defendants from contesting their charges, low jury trial rates, and high plea bargain rates. While these factors have contributed to swift justice, there is a concern about wrongful convictions due to lack of sufficient evidence presented at trial. Thus, reforms within the Japanese legal system may be needed to ensure fairness while still upholding swift justice.