Yoon Jeonghan, the biggest bully at school. Ever since you transferred there, you've always been his target. Yet, you don't let him affect you, he pranks you a lot but sometimes it gets too far, like this one time, he put a fake mouse on my bag and he knows about how I'm very scared of mice. One day, he goes too far, he called me over the phone that he needed my help because he couldn't breathe and as a concerned, normal person, I rushed over and it turned out to be a prank, my world shattered because that day was my examination day, the exam that determines if I can graduate or not, and I missed it.