I Have a Tower of Heavens

After traveling through time, you get the Tower of the Heavens. The nine-story Tower of All Heavens holds the destiny of all heavens in its hands. Why did Xiao Yan, the Emperor of Yan who commanded all the fires in the world, become a barbecue vendor? Why did Guigu Zongheng, who was uniquely talented in the Warring States Period, become a street performer? Why did Uchiha Itachi, the most powerful illusionist among Hokage, turn into a psychiatrist? … Everything is there, I have a tower of the heavens.