Another World (2018)

Hiroshi Takamura makes makes high-grade charcoals at a charcoal kiln that he inherited from his father. He has a wife, Hatsuno, and a son Akira, who is going through a rebellious phase. Hiroshi is indifferent to his family. One day, Hiroshi's old friend, Eisuke Okiyama, comes back to his hometown. Eisuke is a former self-defense official. After Hiroshi learns about Eisuke's past, he decides to take his job and family more seriously.