User blog comment:Halo1081/Chapter 128 and forward/@comment-66.232.251.92-20150226100037/@comment-5707992-20150226131131

That's the reason for this blog, to talk about those questions and such. As for the woman, I don't think she was surprised by his tentacles per say, but eh. Kayano, I think she could possibly be a prototype of some sort if that "Forever 0" is any indication. I think it was confirmed that Shiro wants revenge against Korosensei and from Chapter 128, we know Shiro is most likely not human.