With All Kins, Have No Pity

The powerful God of War, Zhou Quan, is poisoned to death by his useless son. When he opens his eyes again, he realizes that not only has his adopted son imprisoned him and stolen the throne, but he had been reincarnated as his useless son?! And this adopted son who has once been loyal and devoted to him is actually deeply in love with his former self and even treats the current him as a substitute for the former self.

(Source: WebComics)