The Correctional Bureau of the Ministry of Justice administers the adult correctional system as well as the juvenile correctional system. The Bureau directs and supervises the correctional institutions to ensure the proper treatment of inmates with regard to their security, prison work, education, classification, medical treatment, and hygiene. The Bureau is currently conducting research and studies on new treatment techniques. The penal institutions consist of prisons that house inmates sentenced to imprisonment with or without work. As a matter of fact, when a Family Court decides to refer a juvenile to a prosecutor, the detention location usually changes from a juvenile classification home to a correctional detention house (center) (Ministry of Justice Rehabilitation Bureau 2014). In case a juvenile is to be punished with imprisonment with or without work for a definite term with the maximum term of 3 years or more, the juvenile shall be given a sentence that prescribes the maximum and minimum imprisonment terms determined within the limit of said penalty; however, in case the juvenile is to be punished with imprisonment with the minimum term exceeding 5 years, the minimum term shall be reduced to 5 years. Regarding a juvenile sentenced to imprisonment with or without work, the punishment shall be executed in a specially established penal institution or a specially partitioned area within a penal institution or detention facility. A punishment for a juvenile under 16 years of age who is sentenced to imprisonment with or without work may be executed at a juvenile training school until he or she reaches 16 years of age. Female juvenile prisoners shall be referred to women’s prisons; there are 9 women’s prisons and no female juvenile prisons in Japan. There are 7 prisons for male juveniles.