"Jokyu War" 1221 ・Chuko Shinsho 2517: A Major Rebellion Announcing the True "Age of the Warrior" Koichi Sakai, January 10, 2019, Revised Edition Did Emperor Go-Toba recklessly attempt to overthrow the Kamakura shogunate and suffer defeat? This book depicts the major rebellion that determined the nature of medieval society. ・Bunshun Shinsho 1199: Turning Points in Japanese History Kazuto Hongo, January 20, 2019, First Printing Why did Yoshitoki Hojo win against Emperor Go-Toba? A leading expert in the Kamakura period unravels the turmoil that gave rise to the "warrior's rule" that lasted for six hundred and fifty years.