It was a normal day at U.A. High, bustling with students attending their classes and honing their quirks. Class 1-A was seated in their usual spots, their attention fixated on the whiteboard where Shota Aizawa stood, preparing to begin the lesson.

Just as the teacher was about to speak, a sudden commotion caught everyone's attention. The sound of distant screams reached their ears, followed by a shuffling noise coming from the hallway.

Izuku Midoriya glanced towards the doorway, his usually energetic face twisted into a mixture of concern and confusion.

Deku: "Um, is something wrong, Aizawa-sensei?" he asked, trying to keep his voice calm.

Aizawa's eyes narrowed, his usually disinterested expression replaced by a hint of worry.

Aizawa: "I'm not sure, Midoriya. Stay in your seats. I'll go check it out." His voice carried a sense of authority, and the students obediently remained where they were.

Within minutes, Aizawa returned, an air of urgency enveloping him.

Aizawa: "We have a problem," he announced with a no-nonsense tone. "There seems to be some kind of outbreak in the school. It's... zombies."