After Switching Bodies with the Regent

I was a puppet emperor, living in the shadow of the regent, and no one took me seriously. However, after I was hit by a falling beam during an ancestor worship ceremony, my status began to rise sharply, because—— I have become the regent! When I entered the palace late at night and looked at the regent who had become me, I slowly smiled. Hey, I didn't expect it~ The main attack, the emperor's attack, is at the end of the year. Purpose: Communication is the best way to solve problems