This article explores a commonly ignored aspect of Japan–North Korean relations: the Japanese factor in the making of Korean socialism. Korea was indirectly influenced by the Japanese Jiyuminken Movement, in the 1910s–1920s serving as a stepping-stone for the creation of a Japanese Communist Party. Wartime mobilization policies under Japanese rule were continued and expanded beyond the colonial era. The Juche ideology built on tendencies first exhibited in the 1942 Overcoming Modernity Conference in Japan, and in the 1970s some Japanese leftists viewed Juche as a humanist Marxism. Trade between Japan and North Korea expanded from 1961 onwards, culminating in North Korea’s default in 1976, from which point on relations soured between the two countries. Yet leaders with direct experience of colonial rule governed North Korea through to the late 1990s.
