How to Survive from Your Brother After Being Reincarnated into Another World

After traveling into another world, I became a slightly pretty village girl. In this world where elves and magicians are everywhere, I tried various transformation slogans but nothing happened. I can't live this life any longer! Until one day—— The earl of the empire personally came to the door of the hut where I had lived for sixteen years, bowed respectfully and saluted me, and told me a shocking secret - I was the princess who had been left behind, and this time he would take me back to the palace to enjoy the blessings. To die, I would never dare to do this. Sitting in a luxurious carriage, I acted particularly coldly and calmly as I firmly believed that I could not lose the face of the time traveler. No one noticed that I was standing on a carpet that was many times more expensive than the material of my clothes. When the gorgeously dressed emperor looked at me coldly, my legs under the skirt were shaking like Parkinson's. The emperor is actually my brother? ! Still from the same mother and father! My mom is awesome. Escaped from the worries of my old life, there were so many complicated palace dresses that I could wear to death, but they still couldn't let me sleep peacefully. Every day I was worried that the emperor would be angry and knock me out because of some etiquette mistake. Until the day of the full moon, the maid took me into the emperor's palace and asked me to use my special healing power to soothe the emperor's brother, who looked cold but actually lacked sleep, to sleep. Listen, what a strong golden finger! Suddenly discovering special skills, I seemed to see a bright future waving at me. But before I could enjoy a few good days and go out for a leisurely stroll, I was taken away by the big devil. The black-haired man took me to the dark ancient spire castle, with a cruel smile on his beautiful face: "I heard that you are that woman's child, very good... You are dead." I completely fainted when I learned the secret from the maid that the Great Demon King and the Emperor were brothers. Oh mother I have never met, what kind of Mary Sue heroine are you! How should I survive intact? Waiting online, urgent! Purpose: Live every day well even in the face of difficulties