Question: Yang Yun-ho has directed the 2004 South Korean film based on which Japanese book?
Sentence (from "Fighter in the Wind"): It is based on the Japanese book "Karate Baka Ichidai" which is a fictionalized account of karate competitor Choi Yeung-Eui (최영의, 崔永宜) who went to Japan after World War II to become a fighter pilot but found a very different path instead.
Relevant evidence: Yes