Under No One: the Prince Consort of the Nine Kingdoms

[No nonsense] [The plot advances quickly] [Logic online] An interstellar evil civilization comes to the world, and deliveryman Hou Min is set up by a mysterious force and thrown into troubled times. Due to a strange combination of circumstances, Hou Min forcibly entered the Nine Kingdoms. While stabilizing the world, he also had to unite the Nine Kingdoms to fight against the evil forces' puppet regime. Faced with a shocking conspiracy, and when the mystery of his life experience is revealed, the foreign visitor finally chooses to betray his mother planet and fight to defend human civilization!