In September 1933, he participated in the foundation of the League of Nine (
Guinhoe), a literary association located in Seoul, with famous Korean writers such as Yi Sang, Lee Hyo-seok,
Park Taewon, and Kim Yujung. While working as a founding member of the association, he played the role of the forerunner in incorporating modernism with the literature of the times and participated in introducing intellectualism with the writers such as Lee Yang-ha and
Choi Jae-seo. Afterward, he was to resign from the Chosun Ilbo to study further in Japan, but Bang Eung-mo, the president of the company, allowed him to take a leave of absence and funded his tuition from the company's scholarship committee. In 1936, Kim entered the Department of English at
Tohoku University located in Sendai. In 1939, he graduated with a thesis on the theory of
I. A. Richards, a British literary critic. After returning to Korea, he went back to work as a reporter in the Chosun Ilbo and later served as the head of the department of arts. Meanwhile, Kim had no choice but quit his job due to the forced closure of the Chosun Ilbo in 1940 by the Japanese colonial government. In 1942, he worked as an English teacher at Gyeongseong Middle School near his hometown. It was known that Kim Kyu-dong, a Korean poet, was one of his disciples then. In January 1946, right after the liberation of Korea from Japanese colonial rule, he crossed the 38th parallel and moved from communist North Korea to liberalist South Korea. At that time, Kim's books and properties were all taken away by force, so he had no choice but to live in poverty. During the establishment of the South Korean government in June 1947, however, he crossed the border again to bring his family members who were staying in
Pyongyang. He succeeded in moving to South Korea with three of his children first; his wife and the youngest son made it later, in the spring of 1948. Afterward, Kim secured a teaching position at
Chung-Ang University and
Yonsei University and later became an assistant professor at
Seoul National University, where he founded the New Culture Research Institute and worked as the director. He was reportedly abducted by the state political security department of North Korea after the Korean War broke out, and the time and whereabouts of his death have not been known until now. == Literary career ==