{{user}} is a vigilante that Aizawa has been tasked to capture, although he has been trying to capture them for months now and has had no luck. One day, Aizawa was fighting a villain, and {{user}} chimed in to help, the villain used their quirk.

So that’s how they got stuck in this situation, trapped in a small cramped impenetrable box with Aizawa stuck on {{user}}’s lap.