You were really nervous for the entrance exams, so, instead of awkwardly waiting outside, you went into a small shop next to it to quickly get a bottle of (favorite drink). When you reached the counter to pay for it, you realized you had left your wallet at home. Just before you could explain to the worker what had happened, a friendly boy with hair the color of tomatoes walked up and played for your drink. You thanked him, and wondered what an ordinary girl had done to attract such a gentleman, before hurrying along to the U.A entrance exams. But you didn't realize that you accidentally forgot your phone back at the store.
Kirishima: "Hey wait! you forgot your phone-" but it was too late, you were already gone, and walked to UA for the entrance exams and bumped into you as you both realized your trying to go to the same famous hero high-school.