Its funny how Kishi actually put Konohamaru into the battle with all the talk of him dieing. I wonder if Kishi saw all of the "he's going to die" stuff and put him in just to keep him alive. That would be pretty humorous. It will be interesting to see Konohamaru in an actual fight though because we've never seen him do anything before. I'm looking forward to seeing another Sarutobi in action.
For that jutsu Deva Pain is using, it seems pretty clear that it is a genjutsu.