I believe I found these two librarian-run blogs in an episode of the School Librarians United podcast: 
The Graphic Library - Home
Manga in Libraries – Information and resources for manga readership, manga collection development, manga programming, and more!


On Tue, Feb 10, 2026 at 7:59 AM Matthew Cadorette <mcadorette@waterfordschools.org> wrote:
Hi folks:
Has anyone found a reliable source for rating manga series?

I know some are "spicier" than others (as the young folk say).  Without reading a 42 book series, is there a site that might breakdown what exactly it is I'm committing myself to?

Thanks,
Matt

--
Matthew Cadorette
Librarian
Waterford High School
20 Rope Ferry Road
Waterford, CT 06385
(860) 437-6956
X7103
X7127

Dr. Mortimer looked strangely at us for an instant, and his voice sank almost to a whisper as he answered.

“Mr. Holmes, they were the footprints of a gigantic hound!”

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--
Nicole Guillet (she/her) 
Library Media Specialist
John Wallace Middle School
Newington Public Schools
(860) 667-5888 x3208
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