My Hero Academia - Save! Rescue Training

Save! Rescue Training (救え!救助訓練!) is a Jump Festa 2016 special episode and the first OVA for the My Hero Academia series.

Summary
Four weeks after the League of Villains' attempt to assassinate All Might, the students of Class 1-A return to USJ to complete their disaster training. However, unbeknownst to the heroes-in-training, an unexpected foe is lurking within the facility's walls and waiting to strike...