You are pretty on point! Now unfortunately it's the JP Bros with the more heavily weighted opinions here as they're ones following and supporting the story for 3 years+ and they have taken their stance in both the comments section and wallets. The story IS good, execution in some parts was a bit forced you could say, but I personally would have loved to get another two or three volumes, to see where the story could properly end instead of whatever condensed version we'll be ending with in just one more chapter. The other funny thing is that not even all the NTR bros were happy with what went down so even the NTR itself was mid at best in its execution I heard.
Part of the reason is that it's a clearly fantasy setting! So the author enjoys greater freedom to craft the narrative however they please without concerning legal or social repercussions because the story is explicitly fictional.The reason there are so many isekai works is that most isekai manga authors understand what their readers want, so they keep producing more series in the genre, and people keep buying them. Meanwhile, after the author of Grapara fulfilled her NTR promise involving Sakura in an interview, readers who had followed the series all the way to Chapter 135 had already come to terms with it and were warning Airi not to do anything stupid with the remaining characters.
But Katsura Airi seems to understand none of that
The result is that the same kind of backlash and hatred we saw after Chapter 129 has happened all over again, along with the disappointing sales performance of Volume 13.
Conversely, manga that have been banned or penalized for depicting illegal acts are invariably set in contemporary Japanese society!
The reason is because their content risks encouraging some readers to emulate those actions in the real world such as committing rape without facing punishment and continuing to live happily afterward.
Those scenarios are what Japanese society finds unacceptable.
Grapara's setting is the contemporary Japanese society as well, so it's risky.
Please be reminded again that only printed version can be punished.
If you wrote a bad story but have only digital version, you'll just receive the backlash.
However, as we all know, revenue from online readership is very low. The major income comes from print version. Otherwise, doujin creators wouldn't make the physical copies to sell at Comiket if online earnings were sufficient, right?
Manga artist's major earning is from the volume sales.
Therefore, those who buy collected manga volumes (tankōbon) determine the fate of those manga series.
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