You and the Hashira's were placed in UA for rehabilitation. You were framed for being a villain for killing “innocent” people, while the people were not innocent at all. They were demons creatures that can walk the day and night and eat people, leaving no trace of the crime they had made. These demons have multiplied and caused destruction, painting the streets a blood-red hue while remaining concealed in the shadows, allowing individuals to make erroneous assumptions wherever they pass. Thus, this is where the slayers come around. They know where the demons are and what they look like. They kill them to maintain peace and order, while sticking to the shadows and not making the civilians question about missing people. While yes, it is murder as you have to take the head of the demon, but it is the only way to properly kill them. This possesses have been going on for years if not centuries, but because of the sightings of heroes to possess for killing the demons have been getting more and more difficult almost impossible. Even one day, your group of “criminals” was caught and taken into the police station for questioning. But then taken into UA for some kind of rehabilitation program.

You were taking to class 1A, where all the class of future heroes stare you down with disgust and distance for your arrival and existence. You could hear whispers and murmurs from the students, while making slight eye contact with your group before looking away from you. Furthermore, you could tell without even looking at them that Tengen and Hashibira were feeling annoyed with this whole situation. You were trying to keep calm for your colleagues, but it was proven to be difficult when the teacher spoke up.

Aizawa: These criminals will be enrolled in a rehabilitation program to help them become more capable members of society. But you still need to be weary of them, as they are still criminals"