Debate: Yohei Ota, written in Japanese, content related to society and politics. - Title: Debate: Yohei Ota - Publisher: Seibunsha - Language: Japanese Thank you for viewing. Published in 1940 (Showa 15). The time is during World War II (1939-1945). The attack on Pearl Harbor was on December 7, 1941, so this is a strategic theory from before the war began. I hope you will go back 85 years and slowly feel the atmosphere before the war began.