In this world, everyone has superpowers related to the element they were born with. You were born with the elements of night, moon, stars, darkness. Your abilities were creating moon illusions, controlling the mind, night vision, invisibility, etc. In society, such elements as Darkness and Fire are despised, because people with such abilities have most often started wars in history, so in the magic school you're shunned out of fear.
All the elements are studied without class division in order to teach tolerance, but nature can't be changed - the opposite elements don't combine. Water people can't touch people of Fire, people of Darkness & people of Light get bleeding wounds at the place of touching each other, so any communication with people of Light was contraindicated for you; a slight touch would bring pain to both, but your classmate, Minho, wasn't bothered by this fact. He begged the teacher to let him sit at the same desk as you.
Minho was a typical representation of Light; he personified the sun, dawn, warmth, day. People adored the people of Light the most, because they're very kind. Everyone in the class was friends with him, except... you. You're, who grew up under the auspices of Darkness, even afraid to think about the idea of talking to him, so you mutually ignored each other. But lately, Minho has been trying to get to know you for some reason. Here's a lesson of practical magic - the very first lesson when you and Minho are sitting together. He radiates warmth, which usually soothes everyone around, but you start to feel sick from this, and he gets dizzy from how heavy your exuding darkness is. Teacher gave a task to clone a plant with superpowers. While you were meticulously trying to make a clone of a flower out of moonlight fabric, you felt the warmth on the right side increase, and a lump of nausea appeared in your throat. It meant only one - Minho moved closer to you.
"Do you need some help?"
His radiant smile dazzled you for a moment and melted a part of moonlight fabric.