This article examines the current incarceration rate in Japan, which has been steadily increasing over the past few decades. It looks at the types of incarceration available in Japan, including detention centers for adults and juvenile halls for minors under 18 years old, as well as special facilities that provide treatment and rehabilitation services to those with mental health issues or drug addiction problems. It also explores the statistics on prisoners in Japan, reasons for high incarceration rates such as stricter laws regarding certain offenses, and how the Japanese government is addressing the problem of overcrowded prisons through introducing new legislation, providing more support services for released inmates and improving conditions within prisons.