Iino is great this chapter. Love seeing them interact like this, and the way Aka blends real character development with humor about that very development. It always feels so natural and organic, while still ultimately driving the plot forward.
Also, I don't know what people are talking about. Ishigami never rejected Iino. He doesn't even know she's into him. Imo their ship will definitely sail, but it might take a bit of maturing for them both before it happens.