Unchained.

Nishi, a former delinquent and an ex-convict, runs a countryside rehabilitation facility for juvenile delinquents where they grow vegetables and do community work. Kaito, a junior high school delinquent who hangs out with criminals, is sent to Nishi's facility after vandalizing his school. Nishi tries his best to straighten out Kaito, but his old-fashioned and violent methods eventually cause his troubled past to get media attention.