From the fateful episode 7. It's hard to talk about this cel without spoilers, so if you haven't seen episode 7, please stop reading now.

Anyway, this cel is from what was for me the most painful scene in the series. Akari is so happy in her newfound success that she is careless of others' feelings, including Itchan's. Itchan fears that the new Akari will surpass her and drift away. She has convinced herself that if she can still beat Akari, everything will be the way it has always been, and they can go to University Satellite together. Even with her leg injured, she still drags herself towards the goal, needing to be first, to not be left behind....