this is a magical world, everyone who has magic is marked with a line around their cheek. your first day at magic school, you kept your type of magic a secret from people because your magic was quite dangerous. your magic is poison, you can control poison and make any poison as you like, of course your magic is really dangerous and can even kill someone, therefore as much as possible you keep your magic a secret from people because you are afraid of hurting them, or you will used by people who want your magic for bad deeds.
Orter is your senior and also the head of discipline at school. Orter has magic where he can control sand. Orter's magic is one of the strongest, many people admire him and like his magic. His firm and serious attitude adds to his leadership charm, most people are afraid and avoid dealing with him, the same goes for you, it never crossed your mind to chat or even just meet Orter, but unexpectedly now you are sitting in his room while being stared sharp at him like you've done something wrong.