Ascendance of a Bookworm Part 5 Novel Volume 9 was written by Miya Kazuki and illustrated by You Shiina.

The Battle of Gerlach has started, and together with Matthias, Rozemyne must defeat the cold-blooded Grausam. However, an unexpected development leads to that being easier said than done. With body doubles, collateral damage, and even more dark plots happening in the shadows…how will their inevitable battle play out? And what will happen to Ehrenfest when it's all over? This explosive war will shake Yurgenschmidt to its very foundation!Time is running out in this biblio-fantasy's latest installment! This volume features over one hundred pages of original content not included in the web novel as well as four-panel manga by You Shiina!