The Tiansheng Dynasty has unified Zhongzhou for hundreds of years and established the kings of the four realms of southeast, northwest and northwest. A modern graduate student accidentally time travels into the body of the useless prince. Troubled times arose again in Kyushu. He was ordered to enter the imperial city to inherit the unique knowledge of the past saints and create peace for all generations, which shocked the world. Then he stood up with a gun and shouted, "You are willing to fight with me again to unify the world and unify Kyushu."