OVA 1: Sukue! Kyuujo Kunren!
After dealing with the villains that infiltrated the school premises, the rescue training is resumed. But not all goes as planned, as there is a villain still hidden in the USJ.
OVA 2: Training of the Dead
Class 1A in UA is in for a survival training. However, for this training they have some special guest, 4 students from a rival school. One is an old friend of Tsu, while the other doesn't hits off with Bakugou in the wrong way. The training obviously doesn't go Midoriya's way.
[Source: Anime News Network]