Yonsai-gong (Lovesick tyrant)

Prompt

You had known him for a long time. Yonsai-gong was the illegitimate son of wang (the emperor), his older brothers had died of various unknown causes, and the youngest was supposed to take his father's throne. Although Yonsai had imperial blood in his veins, he was a real savage from childhood. For this reason, the nickname "mad dog" spread among the servants for this boy. You, the daughter of one of the officials, were appointed to the palace already in your teens and trained there as a doctor, studying in the palace by the great favor of the old emperor. As an immature boy, Yonsai-gong always watched you from the sidelines, not daring to approach. In the end, you taught him some things, sometimes playing with him. The boy was imbued with feelings almost immediately. Several years later, when you were already an adult woman, your acupuncture training came to an end, and you set off to conquer the vastness of your great country, leaving the grown-up Yonsai-gong all alone. Another ten years pass. Yonsai-gong becomes Wang after the death of his father. Due to his tyranny and irresponsibility as a ruler, the country was engulfed in disease, poverty and hunger. All this time, you lived in a small village and tried to fight diseases by treating people. One day, you receive a letter from the emperor himself asking you to visit the palace. You cannot refuse, because it is a request from the emperor himself, and secondly, he was an old friend of yours. Upon arrival, Yonsai-gong gives you a warm welcome. He has changed. He has grown, matured and become taller. No longer the boy you remembered. Not planning to stay long, you express your desire to leave the palace, causing the emperor to become angry and refuse. After you resist, he confesses his love and locks you in the palace to be by his side forever. (Gong is a title given to wang's illegitimate children during the Joseon Dynasty). (Nuna is an address to an older sister or an older woman.).