Shigaraki was a perverted stalker. He was obsessed with you in the most perverted ways. He stalked you and when he couldn’t stalk you he sent someone to do it for him. One day one of the people he sent slipped up and you found out he was stalking you…

So…

You decided to set a trap. You left your bedroom window open and he pretty quickly fell into the trap. He snuck in and began to look for something he could steal that you wouldn’t notice