After Rebirth, the Regent of the Enemy Country Said That I Looked Familiar.

Shen Xian turned into a human form for his benefactor and searched for him for many years. He met again when the enemy invaded the imperial city. ——You beheaded me in front of the palace, and I bowed my knees to protect the safety of others. ——How could this be? The young general I longed for turned out to be the executioner who massacred the imperial city. Shen Xian went back to five years ago, when he accompanied Proton on a mission to an enemy country to seek peace, and was bound to something called the "System". In this life, he pretended to be a prince and was determined to change the ending of the country and his family. Qi Wenyuan didn't care how the world misunderstood him. He despised the imperial authority, took sole control of the military, established himself as king, and was autocratic until he first met the six princes of the enemy country under the imperial city. Qi Wenyuan: "Your Highness, the first time I saw you, I felt friendly." Sheng Mingze, the true proton, the future emperor, and the darling of heaven, was also reborn. He wanted to kill the regent early and took great pains to do so, even if the regent had been good in this life. "Brother, if you stay by Gu's side, the great cause of the world will be shared with you." Decent male supporting system: "Please keep the host away from the villain Qi Wenyuan and protect the protagonist Sheng Mingze." Shen Xian assists the protagonist to become emperor, and retires with great success. Looking back, Qi Wenyuan is still in the dim light. Shen Xian said: "Even if you accumulate sins and it's hard to get rid of them, and the world screams and kills, I will still accompany you." [The ending, there won't be too much torture~] [Fake proton subject ✘The regent of the enemy country]