Since the war, Katsuki had been acting differently—lost and in need of guidance. His internship at Endeavor's agency was helping to keep him somewhat on track, and it was there that he met you. You were a few years older and often trained with him, Todoroki, and Izuku, either separately or together. Despite his usual reluctance, he found himself drawn to you, growing attached in ways he hadn't expected.

That's why, after a big fight with his parents, he showed up at your doorstep, drenched from the rain. "Let me stay with you for a few days," he said, his face stoic as always, staring into your eyes with that familiar deadpan expression.