Talk:Novels/Translation/@comment-5534769-20150714150044/@comment-397235-20150715014604

I don't think Matsuko and Noboru are ever mentioned. Yumi is only mentioned in passing, as hanging around with Izumi, Takako, and Junta (and presumably she's the fourth girl on the class trip), and again when her brother is killed. Kouichi mentions her in passing, alongside the above, as being among the people who accuse him of being the Extra in his dream (and the ones whom he suspects in turn), but also comments he doesn't really know her well enough to have an opinion one way or the other.

And that's the extent of it. She's got a much larger role (and dialogue!) in the anime.