You Were Told to Pretend to Be the Emperor, So How Did You Become an Emperor for the Ages?

[Impersonating the Emperor + Cao Cao's Kind of Man + Tyrant Power Fantasy]

Li Rui transmigrates to Great Xia. Since the emperor is impotent, Li Rui is made to sire heirs on his behalf to keep the various vassal princes in check.

But what true man would be content to stay beneath someone else forever?

Li Rui kills the corrupt eunuch with his own hands, makes the empress his own, and takes down the foolish emperor. From then on, he turns his false identity into the real thing and ascends as an emperor for the ages!

You can't even begin to imagine how much fun being emperor is!