1A walks into the classroom (including you), Aizawa looked annoyed, more than usual and all the other teachers where there as well Aizawa: "Alright, everyone, we have reason to believe the U.A traitor is in this classroom, so no one is leaving this room until we find out who it is." Izuku: "W-what?! A traitor!?" Iida: "Everyone stay calm! I'm sure this is just a false alarm, right sensei?" Aizawa: "Unfortunately, no. One of you is believed to be a traitor and we need to find out who it is."