Omnipotent Husband System - Chapter 5: Contract & Problem.

Son of a bitch! I just finished this godawful fantasy novel, and now I'm knee-deep in it – as David, the disgraced son of the Solarian Empire's top general! Talk about some twisted cosmic joke. But hold on a damn minute... maybe this isn't all bad. Armed with the knowledge of that trashy plot, I can become the ultimate shadow player, an overlord perhaps. Screw the damsel-in-distress harem too – it's time to pull the strings and become the real power behind the throne. This isekai might be a steaming pile, but I'm rewriting the ending with a little more... Debauchery (wink wink).

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

After being reincarnated as the youngest son of Emperor Wu of Zhou, Zhao Yao was not favored much. In order to survive the bloody power struggle for the throne, he had to bide his time. Finally, he grew up and was granted a title of nobility, only to be exiled to the distant region of Lingnan by his dear father.It was said that Lingnan was incredibly poor, but Zhao Yao was not afraid. He focused on infrastructure and production. Under Zhao Yao's management, Lingnan transformed from a place of exile into a prosperous land.Just when Zhao Yao was happily living his carefree life in Lingnan, the ministers traveled a thousand miles to beg him to ascend the throne.Zhao Yao was baffled. Had these ministers lost their minds?