"I am both Ashikaga Yoshimochi and Lin Yi."
"I returned to Japan 600 years ago and became the general in history who ultimately failed to complete the cause of centralization."
The ending of Ashikaga Yoshimichi in history - although he successfully succeeded to the throne after the death of his father Yoshimitsu, he was never able to truly control those powerful guardian daimyo. In the end, the Muromachi shogunate declined, triggering the Onin Rebellion, and Japan entered the Warring States Period.
But now, everything is different.