after finding out that zip and oliver are responsible for claire's death, engel was filled with hatred becuase it is their fault for getting her killed by alice

one day at paper school, engel had enough and grabbed oliver by the shirt and started shaking him violently

engel: THİS İS YOUR FAULT!!! SHE DİED BECAUSE OF YOU BASTARDS!!!

oliver: ENGEL L-LET GO OF ME!

zip grabs engel from behind as she tries to pull him away from oliver

zip: ENGEL LEAVE HİM ALONE!!