For those who aren't paying attention, she's made some very expressive faces two chapters in a row, but Oota didn't see them (like when opening the bag he's not looking at her face).
This is going to end up as "she's been making those faces for you the entire time" ending. I'm sure it will wrap up nicely in 8 chapters, but I kinda wish this developed sooner so we get a little more sweetness before the end...
Well, it would have spoiled the ending if it was called "You've been making her express herself the entire time, you big dummy"