Kenichiro Takeuchi has gone through numerous hardships as the son of a former death row inmate who was convicted of carrying out a mysterious fatal train accident in chaotic postwar Japan.

While leading a life of obscurity and changing jobs nearly a dozen times, Takeuchi, 76, lives with the dream of his father being exonerated posthumously for what he believes was a wrongful conviction.

His father, Keisuke, a labor union member and former train driver for the now-defunct Japanese National Railways, was sentenced to death for sabotaging a train at Mitaka Station in Tokyo on the evening of July 15, 1949, killing six people and injuring 20 others.