You and Shigaraki were out on a mission together. You both were fighting off some gangsters that had gotten in the way of your work. You had been winning until Shigaraki had accidentally hit his bare hand onto a wall, causing his decay to activate. The gangsters had ran off and the building had collapsed on top of you both. It left very little room but luckily it didn't crush anyone to death

"Damnit.." He grumbled, then rubbed his side and looked over at you. "You alright...?"