I've never felt the need to comment before, but I saw some WILD takes on this thread so I finally feel the need to put in my two cents.
I used to be a competitive athlete many years ago. Nothing like figure skating, but even so, Medalist hooked me with the nostalgia and memories (both good and bad) that it brings back to me of my own days. The difference the right coach can make (Inori and Tsukasa, Miketa and Nacchi), hitting a performance wall and overcoming it (Inori's jumps in vol 5), unexpectedly finding you are particularly good at an aspect of your sport and exploiting it (Inori's salchow talent leading to her opting for a quad S over the more difficult, for her, triples), these and more have left me pointing at the manga going "I know that feeling!"
And hey! I get to say "I know this!" once again for Inori's worst performance of her career (that we've seen, anyway). It's the "Bad Day" event. Yes, we've seen Inori fall and/or make a mistake, but this is the first full-on "she completely blew it" performance for her. Some people in this thread seem to think that athletes produces consistent results with consistent work, but oh man, it does not. I had several Bad Days in my "career" where I was objectively terrible. Some, for seemingly no reason. And those are the hardest to overcome. You do one or two things bad in an event, it's easy to post-mortem them once it over and address it in training. It's nothing personal. You do many or all things bad in event? It's a lot harder to not get overwhelmed with what went wrong and you start to think, "Wow, maybe I suck now?" And whoo boy does Inori go down that path hard here when Hikaru finally catches up with her here. I'm excited to see where this leads, though, because being able to go "Wow, that day sucked" instead of "Wow, I suck" will hopefully address Inori's self-confidence issues that have been present since (especially) the beginning and only really started to go down the path of resolving them with getting close to Iruka during the recent GP chapters.
I'm also really excited about Hikaru! This event isn't actually so much about Inori, it's actually been a Hikaru arc this whole time! From the beginning she's been a follower of the Church of Jun, sacrificing everything and thinking that it is not only okay, but a requirement to get where she wants to be. But she's already learned when she switched clubs and moved town, the relationships she thought she was sacrificing at the moment (Rioh's family) or had been sacrificing the entire time (Yuna and clubmates) wasn't necessary or even going to happen. And I think she has just learned that she needs Inori as much as Inori has needed her, and nothing needs to be sacrificed here for one or both of them to get better. In many sports in the US, we have a saying that "Iron sharpens Iron", that athletes can make each other better through training and competing together, and oh man, if these two started to train together to help fill out each others gaps (Inori lacks Hikaru's confidence but still tops Hikaru in quads and possibly still ice dance-like expression), oh man, watch out world!
And finally, FINALLY, I feel I can write off her paralleling herself/Tsukasa and Inori/Jun from several chapters ago as definitely unreliable narration. I never understood that at all, I thought it was pretty clear that Inori and Tsukasa have WAY more paralells with each other than with either Hikaru or Jun, but only because I'm the reader and have backstory that Hikaru is obviously missing. "Inori isn't Jun" WELL FUCKING DUH HIKARU! Inori struggles and actually shows it!!!
/two cents