By connecting Japanese history and world history, you can solve the mysteries of history! Why did Ashikaga Yoshimitsu promote trade with Ming China? Why did Xavier come to Japan? A popular world history lecturer reveals for the first time "between world history and Japanese history". Why did Japan only study world history and Japanese history together in modern times? A popular world history lecturer says. Originally, Japan was always with the world until the country was closed off, and in the midst of that, it maintained its independence without succumbing to the rough waves of the world. In this book, we will go back in time to the Yayoi period and discuss "between world history and Japanese history" all the way to the present day. Where did the Japanese come from in the first place? Ashikaga Yoshimitsu was a super globalist, and exports during the Sengoku period were "weapons and mercenaries"... This "education for adults" is based on cutting-edge historical research, and could only be written by a world history specialist who also knows Japanese history.