While I do think we're past the big twists now, and going into the end-game resolution with everything laid out on the table, I really do hope they surprise us and throw another big twist our way.
Aika's interaction with Hakaze the previous episode being just an elaborate act would be a real nice surprise, and when Aika has expertly manipulated everyone into doing what she wanted, having Yoshino open that note to see her rub his face in it, would make me lol.
To be clear, I don't think that's what's going to happen, but I can dream.