Spoiler!
The emperor will send the ML and og FL to do a field check for a hunting festival and traps them in a mana cave. And I firmly believe that the author took her inspiration from Satan himself while writing his character. At least Satan provides us a choice, this man straight ruins people's lives. He brings MC to his office and tells her to save them by revealing her powers or let them die. she chooses to saves them. And so, the emperor comes to the duke's mansion the next morning saying that shamans are national properties. He traps her in this room and asks her to break the marriage he decreed and become his personal fuc**** weapon (Because transmigrators have a power that can defeat the emperor)
i shouldn't have asked.