Faint King System: I Am the Villain

I traveled through time and became Li Shimin, but the system insisted that I become the number one coward in this steel-like Tang Dynasty. See how I turn a deer into a horse and become a villain, making these loyal ministers and generals red-eyed. See how I complete one perverted system task after another, clear the entire system, and let the system praise me for my talent. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.