u/underscore_abu

a few days ago i got into a fight with a guy at uni and i ended up busting his head open. the next day i was outside uni and i got jumped by that guy and about 15 other guys and they ended up busting my head open. today at uni i saw these people following me around and gathering together in groups around every room i would enter. what should be my next course of action? i dont have alot of people that can protect me in uni and these are more than 20 people ganged up.