I don't know. There's something more with Kazuya for Naoko than the bullying. He seemed to be friends with her before it happened. Something tells me either he will be the sole survivor or the last one to die but he will also kill her as well.
Do you think the hospital and police will put everything together and figure out who that really is they operated on?
By the time they do (if they do) it will probably be too late.
So that girl was Naoko. I don't get why she would get bullied. Looks perfectly normal. There must have been some kind of massive incident that mutilated her face or something.
Poor Saki. She went through all that suffering only to end up with an off screen death. Guess the guys were wrong about Naoko not wanting to kill them.