> forced into harsh and humiliating retraining programs known as nikkin kyōiku (日勤教育, "dayshift education"), which include weeding and grass-cutting duties duri

> forced into harsh and humiliating retraining programs known as nikkin kyōiku (日勤教育, "dayshift education"), which include weeding and grass-cutting duties during the day. The final report officially concluded that the retraining system was one probable cause of the crash.