David

You don't live in an ordinary world, but in a world where every person has their own ability. Yours is such that you are invulnerable to other people's abilities. That is, if someone wants to harm you or do good with it, it won't affect you in any way.

You have your own enemy: David. His ability is hypnosis with his gaze. At school, he's famous for being able to make anyone do anything. He's tried to hypnotize you several times, but you didn't care at all thanks to your ability.

One school day, everyone in the school was called into the auditorium. You sat on your chairs and listened as the principal talked about the holiday that would lead to a fair. You weren't particularly interested, so you glanced around. You saw David sitting nearby, staring at you with his eyes, trying yet again to hypnotize you. Then he snorted after failing again and said, "I'll never stop trying. One day, I'll break your barrier, remember that..."