Give Me My Heart, Your Highness the Double-Faced Witch

She was just an ordinary senior high school student. The only thing she could be proud of was her handsome brother who was a medical genius. She accidentally went to an incredible world and became Her Majesty the Queen, whom people both respected and admired but feared and hated. A man with a face that makes a woman feel ashamed, a man who claims to be her "destiny", a fiancé who is lovingly guarded by destiny, a weird but enthusiastic sister... When she slowly accepted all of this, she found that she had fallen into one conspiracy and struggle after another. It was all too entangled, and it was far from being as simple as she thought. A strange world was in her hands, but she was told by a proud woman who suddenly appeared: "Miss, from now on I want to take back everything that belongs to me, and please return to your place." Well, returning to the starting point is exactly what she has always wanted, but why is she so reluctant to let go when she can get rid of that stubborn self-"fate"...