Well didn't she mention that she wants to sell 1000? while Luca is aiming to only sell 30, so for her to have that reaction that she had at the very start of the arc on the day of the upcoming chapter i assume she will either sell few or maybe none while Luca will sell all 30, i guess its the simple quality vs quantity kind of thing since Nagi is putting all her effort into advertising and not into her actual manga. Another possibility i wonder (for her reaction) is the matter concerning Luca's wish, because if the arc is coming to a close then i assume they will go back to Athena (or at least i hope so) so it would be safe to assume they would wrap up that lingering wish as well right? Well either way it seems like the arc is wrapping up and going to that inevitable conclusion of her screaming at the top of the building on the last page of this chapter, looking forward to seeing how it gets there tho.