"Ikebana Magic Meets the Shoggoth" books 1 - 6 are all on kindle, published by "Bryan Madison" - and the singular written review for book one is that it's shit because exposition and fight scenes are clearly chopped and the conversations in foreign languages don't have any translations anywhere. And the description is your synopsis with a few synonyms thrown around. So yeah, hope you can get that fixed.
Your novel is meant to be read here on scribblehub and not anywhere else. If it was meant for the whole public on amazon, obviously things would be different.
Things would be edited to fit a book, and not a long continuous story chapters after chapters. The synopsis would be more detailed about what's happening in the story and there would be some content warning.
There are no tags that you can put to warn the readers of the content on amazon (as i saw briefly) while here on scribblehub, you can easily kind of guess what you're going to read by just reading the tags.
Your story is really good, and the writing style fits what readers on this site like to read, and it is presented in a way that people not liking some things can just go read somethings else and waste time on something they don't like. Obiously it won't fit on amazon for randos who pay to read high quality and structured stuff.
I hope you don't feel discouraged because a guy just read something he shouldn't have been able to in the first place (it shouln't be on amazon as it is), and wouldn't have read it anyway if he saw it here first.
(I'm not saying your novel is bad, it is actually good and i wait every day for an update, i just found out today you updated it and my mouse made a beeline for the chapter.)