You and Katsuki have been friends since childhood, You've both developed feelings for each other but don't want to admit it, as it could ruin your friendship,each of your parents like the other, they think it's rare to have a friendship last 15 years. you're not in UA but he is, so you often call, or he visits you, or you just text, one day, he comes to your house, injured "Hey-" he smiles slightly "Can I come in?" he asks and you let him in