I Accidentally Made Friends and Turned into a Dog-Tailed Grass Monster

I am a little fairy. Because I made a good friend, I was deceived into living ten lives in her place. In this life, I was Lin Xueruo, the legitimate daughter of the Prime Minister. I should have been studying peacefully in the academy. After completing my studies, I would marry the emperor and live a smooth life. But due to some changes in the middle, I turned into a dog-tailed grass demon. Let's see how I can make a comeback!