After Three Years of Rebellion and Exile, the Empress Knelt Down and Begged Me for Forgiveness.

Travel through the world of fictional history. After three years of assisting the empress to secure her throne, she was stabbed in the back. Throw it away after use? Sorry, you messed with the wrong person! I was devoted to you, but you betrayed my sincerity. In this case, don't blame me for picking up the butcher's knife. Those who harm me will never be let go, and those who betray me will all die. From now on, I will be the only one who bears the burden on the world, and don't let the world betray me!