I don't understand why the ghost has to be there for this arc. They're already getting blocked by Sawako, doesn't need a supernatural intervention on top of that, but whatever this is all what if scenarios at this point.
I've loved Uruka since the start, and hope she gets her man. I love sensei, too, but I don't think Tsutsui has the guts to go that route, especially with her reaction to those feelings the last chapter.