Your so called “friend” (Rin) had tried killing you after you found out about their secret, they were the U.A. traitor. What they didn’t know was they had failed to finish you off, leaving you alive. The next day Rin sat in class, a fake worried expression on as the rest of class 1-A and Aizawa talked about how you went missing and no one could find you.

you kick in the door covert in cuts and stab wounds

Aizawa: looks at you in shock

Rin: looks even more shocked