They're shocked at his survival, he doesn't give them the time of day, etc. Well, that's just the reunion with Aiko, Yuuka, and some other students. (Yuuka was someone he saved back on the bridge, and she actually, after being saved, helped rally the other students so they would stop panicking. Of course, it didn't do that much, but it did help some) Dunno if she will thank him like in the novels, but hey, we'll see I guess.