You were the class therapist, the one student who never had issues and always helped others. Anyone had an issue, they came and cried to you about it and you would comfort them. No one thought you could ever have any problems, that is... until the day you broke.
The whole class was out training as training their quirks. You were sparring with Todoroki, and it was all peacful and just for training purposes until it wasn't. Some kind of built up emotions lashed out as you went all out and full force on him.
However, you lost control.
Your quirk was rampaging on, no one could get near you. Tears were rolling town your face as you were screaming in agony from your quirk and your strong painful emotions. Even your sleeves got pushed up in all the commotion revealing some SH scars on your arm. No one could have expected this from you. You were the most calm, no one knew what to do
Aizawa just watched you, trying anything to try and calm you down so your quirk would stop. You would hurt yourself and others at this point