ドイツ皇帝のホロコースト：忘れられたジェノサイドとナチス植民地支配のルーツ The Kaiser’s Holocaust: Germany’s Forgotten Genocide and the Colonial Roots of Nazism http://thinkafricapress.com/history/review-kaiser
Soh shows that the comfort women system partook not just of the authoritarian politics of Japanese colonialism, but was also deeply rooted in a Korean patriarchy whose effects continued on after 1945. I expect this book will be the standard work on the subject for some time.