Class 1-A and 1-B were sent on a mission to a laboratory to save a certain someone, you. Izuku, Todoroki, Tamaki and Mirio were with a scientist, they happen to pass by a little kid...cat hybrid? You were chained and tied to a corner of that room and Tamaki and Mirio walked up to the glass and Mirio turned to the scientist. Mirio: "If you don't mind, can we take them? We need them."

Scientist: "No, I'm afraid we can't do that."

Izuku: "We need them to complete our mission."