La mancha que nos queda, 1

Mo Xi, Zhonghua's most illustrious general, is known for his volatile temper and iron discipline. In the past, he was one of the empire's two prodigies, alongside Gu Mang, a talented soldier of slave origin who was also his comrade-in-arms, best friend, and secret lover. Everything changed when Gu Mang deserted and swore allegiance to the sinister Liao kingdom, becoming the nation's most infamous traitor. Years later, the enemy returns him as a shadow of his former self, a military genius reduced to mere scraps. No one craves revenge more than Mo Xi… or so he thought. Upon reuniting with Gu Mang, he finds himself with more questions than answers. Why did the man he loved most abandon him? What lies behind his betrayal and that tormented gaze? What does fate hold for him? Who is behind these tragedies? Could it be connected to his past life?