Written and illustrated by Mitsu Izumi [ja], Magus of the Library has been serialized in Kodansha's seinen manga magazine Good!

[4] In North America, Kodansha USA announced the English language release of the manga in October 2018.

[6] The series ranked 12th on the "Nationwide Bookstore Employees' Recommended Comics of 2018" by the Honya Club website.

[19] The series ranked 50th on the 2021 "Book of the Year" list by Da Vinci magazine.

[20] French newspaper Le Figaro selected Magus of the Library as one of their six recommended manga featured at the 2019 Paris Book Fair.