some faces are completely obliterated under the marker, whereas most are simply X'd out.
And the faces that are fully scribbled on, by my reckoning, are those who were directly involved in her torture and/or were the instigators/ringleaders. The "DIE DIE" is also over most of those, plus the Teacher, as well.
Could be the X'd out people will get some form of "lesser" revenge whereas the Main Villains will get the Biblical Treatment. Kitami not being one of that latter group, makes me wonder what all will befall him. Like, the X'd out simply let the bullying happen. Not innocent by any means, but it remains to be seen whether Himari will differentiate in what she subjects them to (and she has left the two who tried to talk to the sensei before unmarred, so it seems apparent she's aware of who did or didn't do what).