Yamazaki yearned to be with his family. He quit his instructor position and volunteered for a mission in the south. He left Quang Ngai under new identity papers. Yamazaki was now Vo Van Ki, a language professor born in Saigon to a Vietnamese mother and a Japanese father. During his time at the academy, he had improved his Viet language skills so he could pass himself off as a native in simple exchanges.

