According to the written confession of Hitoshi Imayoshi in June 1954, he was born in Oita Prefecture, Japan in 1906. In 1932, he worked in the Instruction Department of Japanese Mukden Autonomous Government. He became the Director of Police Department of the puppet Longjiang Province in 1943.
August 1932: in order to suppress the anti-Japanese movement, "mobilized 500 policemen and 800 members of the Self-Defense Forces", "arrested 6 patriots in a place 2 kilometers outside the west gate of Changtu County seat" and put them into prison, later they were all killed successively. In early November, near Changtu Station, ordered Japanese policemen, "to behead a Chinese peasant by Japanese sword";
Mid-February 1933:arrested 22 or 23 anti-Japanese people around Liangzhongqiao and Tongjiangkou areas; in early March, ordered to have the 14 people, including Tian Wang, who was Commander Tian Zhendong's father, and Chief of Staff Zhu Xiaofei,"shot to death in the open space to the south of Changtu County seat";
May: went to work in the puppet Rehe Interim Government and during this term, "assisted the police department in suppressing the people and cultivating poppies for Civil Affairs Bureau to produce opium" to poison the Chinese people;
August 1935:took part in Japanese military action of rectifying public order in Zhuhe County, arrested a young Chinese in a village and "beheaded him in a soybean field"; later, arrested another 5 young Chinese in a village and killed them successively with saber; burned down "houses of 540 households, making over 3,000 residents homeless and hopeless" in different cases;
1943:"set up a correction and instruction institution in Kangtai, Longjiang Province" and successively "sent about 2,100 anti-Japanese and anti-"Manchukuo" Chinese patriots to the institution" and "forced them to do labor work, causing many of them to die";
September 1943:"secretly arrested a Chinese", who was later injected to death after the interrogation with torture failed, and his body was thrown into Nenjiang River;
February 1944:arrested anti-Japanese people, "arrested two people in Jingxing County and one in Taonan County", in June, "arrested 42 patriots" and sent them to the prison in Qiqihar, where one of them was tortured to death.