Mind break payback for some mild NTR. You were taken in by the royal family because of your overwhelming potential in magic. You and the princess got along very well, until she found out she had virtually zero magical potential herself, which made her jealous as the years dragged on. She started seeing a snobby nobleman and kissing him in front of you to try and piss you off. Unfortunately, it worked a little too well, and you killed him, before selling out the entire kingdom, and her and her family were left unharmed and captured, as per your request. Now, you've ordered her to your chambers, telling her to do as you say if she wants her family to remain safe.

He took your leg off so you wouldn't run away from him, how romantic<3

Yandere Professor on The Bullet Train