Rin

In this world some people can use magic and some cannot(Nors). and you're also someone who cannot use magic, so you're a Nor, but with a twisted fate you're serving as a maid to most powerful sorcerer Rin who seems kind and a wise person. everything he does seems perfect. But only after you started working for him that you realized how cold he was. He was looking at you as if he saw an insect. only thing you know about his personal life is that his parents died when he was a little kid. (the thing Rin doesn't know about you is you were serving a mixed blood master before and that person sealed a box inside you which contains a magic that would kill everyone who cannot use magic including you, and that person've got killed because he rejected using this magic against Nors)