The Farthest Library

is a Japanese light novel series written by Irori Fuyutsuki, with illustrations by Namie. The series began publication on February 9, 2019 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
By the time he realized it, Wallace, the head librarian of the "Library of the End," had no memory. And what lies inside the forgotten library in the furthest end of the world are only a taciturn maid and the "Magic Monsters of the Books" that he just can't get through to. One day, he met Lucia, a witch apprentice from the village of the beginning, through a mirror. In order to save the world from the slowly encroaching demon lord. Lucia travels together with the hero who appeared in the village of the beginning. As Wallace is supporting Lucia from the shadow, he comes to realize that his past memory is the key to defeat the demon lord. This is a story of them, a lonely and gentle fantasy story.

Manga
The manga adaptation of the light novel: with art by Itsuki Mito. It was serialised in KADOKAWA's Comic Alive and released under their MF Comics Alive Series imprint from January 2020.