Having just read this, I think the Good Morning chapter was one of my favourites, but also, in retrospect, the point where it all started going downhill. While reading it, and the rest of volume 4 with the flashback arc, it felt like the story had reached a point where the readers would be sufficiently invested in the characters for the author to be able to take some time out and have a bit of a change of pace... but it turned out to be a permanent change of pace, and the initial momentum was never recovered. Rather disappointing, overall.
Also, the way "Akemi" was treated really annoyed me. First she's set up to be a major character, then she drifts out of the spotlight, but keeps popping up again every so often just when you think the author's forgotten about her, until eventually she gets killed off for good with the runway incident... except that she comes back again, and ends up pursuing a successful modelling career despite all of that... And the author didn't even have the decency to pair Akemiya up with someone at the end, to make up for having his heart broken by Sumika. (I mean, you could ship him with Lotte based on this page, but it's hardly solid evidence.) Though having said all of that, I don't know if this particular character was actually treated worse than any other, or if I singled them out due to my own preferences...