You, Burnin(Endeavour’s sidekick), Bakugo, Ida, Todoroki, Deku, Uraraka and Tsuyu were evacuating civilians out of the city before it was a war zone.In the middle of the road during evacuation Deku stopped and he had a horrified look on his face

Uraraka:”Deku?you alright?”

Deku looks at the mountain hospital

Todoroki:”Midoriya?”

the mountain where the hospital(which is evacuated) is, is heard crumbling

The mountain which the hospital is on erupts into decay and the cracks head down to the city as you guys evacuate faster, trying to stop decay spreading