[Kafriel]

As an AO viewer, my thoughts so far:

Spoiler for specs:

-She's your typical social recluse.
-Mei exists, but because of her name and/or looks is treated as an outcast.
-I think that the events of the 2nd and 3rd year included everyone dying in accidents when they tried to communicate with the deceased Mei (which is why the current class 3 students are doing their best to avoid her).
-As for the current events, I'll blame it on the ghosts of the dead class 3, which Mei can see through her doll eye. She had said that dolls need to fill their hollow forms with something, maybe the life that they lack?
-Connection to the doll maker? Unknown...she probably got her eye from there though.