Talk:Keiko Numata/@comment-5534769-20140523111332/@comment-397235-20140710005456

But on the other hand, there's the wounds on her hand. She looks like she grabbed something really sharp (which is what most self defense instructors tell you to do if you're cornered by someone with a knife and can't get away). The blood on her face, I've decided, has to be hers (since it flows under her glasses, not over them, which suggests someone violently hit her in the head; this, coincidentally is the blood which splatters on Mei; you can see Takako's tears moistening it again as she's struggling).

The blood all over her vest and legs almost certainly isn't hers, though since she doesn't have an locomotion problems chasing Mei. That suggests it must either be Keiko (who is also covered in blood, which must at least partially belong to her husband) and Manabu, the only other person who's been hurt at this point.

As for why she's calm, that's what shock will do to you. She wasn't ever an especially emotional person anyway, so it doesn't seem too strange for her not to react all that much (it doesn't seem overly out of place to Izumi, who knows her better than anyone) when she finds her friends. She's apparently bipolar, judging by what Izumi says and how she acts at the end (she goes from calmly reassuring Kouichi she's not going to kill him to laughing hysterically when she misses killing Mei within the space of thirty seconds).

Considering her teacher walking into class and gutting himself didn't illicit more than her leaving the room, I'm not sure what else could've made her start screaming. And it makes sense: she's already lost a really good friend, along with the guy she sits in front of in class, one teacher, and two other classmates with a third apparently on the way out, and then death apparently comes looking for her. That'd be enough to send most people over the edge, I imagine.