I don't know what to think of this story anymore. Personally, I liked it better in the earlier chapters. As this story progresses, Adachi seems to lose more and more agency. It's all "Shimmura" this, "Shimmura" that. As much as I understand that this IS a romance story, I feel that Adachi's character has suffered greatly from this approach.
Normally, in comparable plotlines, the protagonist contextualizes their feelings and their romantic interest through the lense of their preexisting motivations and experiences. And this was the case in earlier chapters - Adachi was much more introspective back then.
The core of the issue then, is that there's a fundamental lack of characterization in these later chapters. Everything Adachi thinks and is shown to do is so heavily centered around Shimmura that Adachi themselves has become hollow in nature. Who even IS Adachi outside Shimmura? I don't even fucking know anymore. It's all like a shitty version of the co-dependence trope without the "co" part. I have the impression that to some people this might be a realistic interpretation of their crushes as a dumbass, moody teenager, but from a narrative perspective I feel that this is a serious decline in quality compared to its more humble beginnings.
And this latest arc just ices the cake. Adachi has what could only be described as the Gayest God Damn Panic Attack I Have Ever Yet Seen. As ludicrous as this moment is, the newer characterization of Adachi being a hopeless-blubbering-homosexual makes this moment quite understandable. And then, of course, Shimmura has to act as insensitively as possible to this breakdown. Is Adachi being stupidly unreasonable? Yes. But it would take not even half a braincell to register, at least by tone, that someone isn't exactly in the best state of mind for rationality.
Curses! The self-absorbedness strikes yet again!
Ever since Adachi has lost their agency outside Shimmura, I've been really on-off with following this series. It's a shame.