The Emperor and the Knightess - Chapter 303

Legend says, that there is a great demon, who is the human kind’s public enemy. He is the galaxy federations’ nightmare as he wanted to conquer the whole universe. On the first day, he completely took out the human fleet, plunging them into disorder. On the second day, he declared that he will wipe out the whole federation. On the third day, he declared——that the hero who shot him in their previous battle must marry him, or else, he will destroy everything.

The galaxy federation president and the council members had a long meeting after that. They decided to dispatch a soldier, Wu Xing Yun, and marries him off to the arrogant demon. Wu Xing Yun was once a hero who fought for the nebula, and henceforth, he was tasked—— for the sake human race and the universe’s peace, to eliminate mistresses, settle his matters with the mother-in-law, and fix the man’s crooked ways.

Wu Xing Yun was very perplexed when he asked his commanding officer: “Sir, why did it have to be this way?”

Commanding Officer: “Soldier, bear in mind, that this mission of yours, is for the sake of the universe and mankind’s happiness. You must hold on to your husband, and fight other mistresses! Do you have the confidence to accomplish this task?”

Wu Xing Yun, stood straight, saluted, and instinctively replied: “Sir, yes sir! I will accomplish this task!”

- Description from Novelupdates

She became the supporting character ‘The First Empress’ in the webtoon . This is Empress Livia, who died young after being shunned by her emperor due to her timid personality and incompetence. Her problem is that I woke up at her funeral in Livia looking ‘just like’ her. Everyone praises me as the ‘resurrected empress.’ But only the emperor knows. That I am not the real Livia. “The crime of desecrating the empress’ coffin. She deserves the death penalty.” She wants to kill me. She offered him her deal. Just to live. “your majesty. I am a very useful person. “Please use me.” Let’s just hold on for one year. Although her husband is so so so so scared! The real heroine and ‘second empress’ will appear. Then I can leave the palace in peace. * After many twists and turns, the time was ripe. I told her husband. “As promised, please divorce me.” My husband stared at me. And he hugged me quietly and said, “no way.” “yes?” “Now what? “I can never let you go.” … Isn’t this it? Is it because the empress worked too hard? You want a divorce without obsession? No, I have to divorce?