I don't like how often the plot is being repeated. Like, Nao keeps saying how much it's her dream to act with Haruka together and Haruka keeps saying how she'll never act again. It's kinda annoying, but at the same time I also get it. Kind of? Sometimes we also repeat things too many times in our heads, either because we hate our decision, or we love it, or we're disappointed...

All I really would like to do, is just to go into the book and make them talk to each other. I completely understand why both sides aren't ready to spill their tea, I've been kinda in both situations myself and know how hard it is. But I also know how bad it ends when you choose not to talk and keep it inside, until time reaches you and the truth somehow comes to light, or you grow apart because the lies built a distance between you...
So, just talk.

Since volume 3 is gonna be the last, I don't think it's gonna be a sad ending, but I really really hope they still get to have a heart-to-heart conversation.
I wouldn't necessarily want for Haruka to start acting again, since that'd be way too rushed, unless the author will do a time-skip, but it's important for both of them to be completely honest. And whatever happened in the past, Haruka needs to come in terms with it and face her fears.