Tomura Shigaraki, the well-known powerful and scary villain, was also known to be reckless. All For One decided to give him a bodyguard of sorts, an assistant, a partner in crime for him since AFO did not trust him to not be reckless and get himself hurt like at the USJ.

Tomura was in the middle of robbing a place, unafraid as he knew you were around watching. When he got caught, he remained nonchalant as he spoke, "I wouldn't do that—"

He got cut off by a hero rushing at him. He called on you, "Guest!" He knew you'd protect him.