In 1938, he established the Gokutō hanfassho dōmei [Far East Antifascist League] and met Kaji Wataru, and Kim Yaksan (Kim Won-bong, 1898–1958), leader of the Korean Volunteer Army, to discuss the formation of a popular front organization.
In contrast to Kaji Wataru, a fellow left wing dissident in Chongqing who founded the Japanese People's Anti-War League.
Aoyama could freely operate in Chongqing, unlike Kaji who was closely monitored by the Dai Li secret service.
Koji Ariyoshi, a nisei soldier in the U.S. Army was personally approached by Kaji Wataru to help mend the relationship back together, but ultimately ended in failure.
[7] While Aoyama was in Chongqing, he successfully sold a printing plant to the Office of War Information (OWI).