Wataru Kaji (鹿地 亘, Kaji Wataru; 1 May 1903 – 26/27 July 1982) was the nom de guerre for Mitsugi Seguchi (瀬口 貢, Seguchi Mitsugi), a Japanese writer, literary critic, and political activist. During his lifetime, he worked as an anti-militarist activist in pre-war Japan, and, after the outbreak of World War II, joined the Chinese resistance to Imperial Japan. After the war, he would be kidnapped and tortured by US intelligence under suspicion of being a Soviet spy.
Source: “Wataru Kaji”, English Wikipedia (CC BY-SA 4.0), excerpt