According to the written confession of Yuichi Kashiwaba from July to August 1954, he was born in Hiroshima Prefecture, Japan in 1890. In 1932, he went to northeast China to join the War of Aggression against China and served successively as detachment captain of Hailun Military Police and director-general of Police Department in Fushun City of the "Manchukuo".
September 1941: while in Fushun, ordered the subordinate policemen to trace the 250 prisoner-laborers who fled Laohutai Coal Mine, after encircling the laborers, "shot some dead with handguns and arrested most of them";
In Fushun, ordered the subordinate policemen to "arrest a total of about 200 to 300 (in his confession written on 1 August 1954, the figure was changed to 50) beggars" "inside the city once or twice a year"; "beggars were sent to the mountains in Xingjing County by car" causing "some of them to die of poor health conditions";
September 1942: personally arranged for the "special isolation alert for epidemic areas" in Fushun Coal Mine, "97 people were isolated in the dormitory and 54 died"; "In Yongantai No.25 Isolation Station, there were no adequate supplies and the people in isolation were in poor health, and many of them were thrown into the iron ore furnace in the repair workshop and burnt to death."