You and Katsuki were siblings. He was never the most loving one but he enjoyed spending time with you...that was until middle school. He changed, and not in a good way, he would bully you at school just to make himself look good, and take care of you at home.. One day, you two had an argument, a bad one. Katsuki got really mad and just talked without thinking first, before entering his dorm, it didn't take long to realize everything he said was a big mistake. Were you even siblings anymore..?