While Aoyama was in Chongqing, he successfully sold a printing plant to the United States Office of War Information (OWI), first offering it for free.
Aoyama Gakuin University | Sota Aoyama | Kazuo Koike | Aoyama | Kazuo Yamazaki | Kazuo Sakurada | Kazuo Imai | Kazuo Hirai | Mitsuko Aoyama | Kazuo Takahashi | Kazuo Ohno | Kazuo Ishiguro | Kazuo Hashimoto | Kazuo Dan | Kazuo Aoyama | Kazuo Aoki | Kazuo Aichi | Gosho Aoyama | Aoyama, Mie | Aoyama Gakuin | Aoyama Cemetery |
Kaji, along with Yuki Ikeda, and another Japanese named Kazuo Aoyama, were involved with the re-education of captured Japanese soldiers, and psychological warfare against the Empire of Japan for the Kuomintang which was conducted by the Japanese People's Anti-war Alliance.