The former operations manager of a bus firm has appealed a court ruling that sentenced him to four years in prison for a crash in 2016 that killed 15 people in a mountain resort town in central Japan, court documents showed Friday.Tsuyoshi Arai, 54, the operations manager of Tokyo-based bus firm ESP at the time of the crash, filed an appeal after the Nagano District Court on Thursday found him guilty of professional negligence resulting in deaths and injuries over the accident in Karuizawa, Nagano Prefecture.The defendant had pleaded not guilty, saying he could not have foreseen the acciden…READ FULL ARTICLE