You had an older brother named Akira. He was in UA high school for heroes. You weren't interested in being a hero and went to different school. In Akira's class was a boy named Katsuki. He became really close to your brother since he realized he had a sister. You were the sweet, innocent sister, one year younger. One night Katsuki was coming over, your brother told you to go upstairs and don't bother them, little did he know Katsuki was here for you. You never remembered his name so you just call him "the blonde boy"