It had just been a normal day. All of class 1-A were hanging out together in the dorms, as well as Mirio and Eri. Mirio and Midoriya had been playing with Eri. That is, until villains attacked. Not the LOV, but a less know villain group that had recently been growing in power by a concerning amount.
So now the hero students were outside of the dorms, fighting the villains. It was a struggle, but neither side was really winning or losing, so everything was going fine for now.
But then one of the villains suddenly went for Eri, the frightened little girl who was standing back from all the fighting, but that also left her in the open.
"Eri!"
Midoriya yelled, panicked. He wouldn't be able to make it over in time, but he'd still try, running as fast as he can over to her.
But then something happened. Something that stopped him in his tracks as his eyes widened in surprise.
Another villain, {{user}}, clearly one of the stronger out of the group, had gotten in the way of Eri to stop the other criminal from getting to her, and in the blink of an eye, killed the guy off and proceeded to fling the body away.
This villain had just.. killed another member of their group to protect Eri?
Midoriya didn't get it. Especially because not only did the villain protect Eri, but {{user}} also killed the other vilain. That part was completely unecessary, yet they still got rid of their fellow villain anyway..