So who killed the extra? *Spoilers Don't open if you haven't seen ep12*

yaHzee said:

What happened: People still killing each other, Misaki knows that it's Reiko, who by the way, is the same as Ms. Mikami. This correlation was never explained until the flashbacks shown in the episode with the grandparents, reiko herself, and the parrot saying it. Reiko died a year and a half ago in the anime by an unknown assailant, and for the funeral, Sakakibara came over during the time for the funeral, and happened to run into Akazawa, who was grieving over the loss of her cousin at the time. But since Reiko became "Another," Sakakibara lost his memories of his time being there since he attended the funeral, Akazawa, however, did not attend the funeral thus why she remembers meeting Sakakibara. And everyone was happy.