Orihime's sad faceless close up panel after Ichigo rejects her insistence on helping in-between her smiling panels is still my favourite character acting in the manga paneling. The brief sadness being replaced by the fake cheeriness to follow Ichigo's instruction and stay out of his was is always pretty effective.
I particularly liked this instance because Orihime was shaded in darker tones in the one panel with the only source of white colouring being below her. Makes an even stronger contrast with the panels before and after it.
I do distinctly remember this being a part of the arc where my interest was losing fast in the anime. I'm honestly not sure I saw much more of the anime after this firework part ended, at least not I think it was the point I stopped watching regularly.
Regardless, re-visiting it now . . . meh. I think a lot of my distaste might have came from the fact that I find Ganju kind of annoying, but I did like his discussion with Ichigo here and his way of helping him while both of them still maintained their vitriolic relationship with each other.