Hollow Regalia Novel Volume 5 was written by Gakuto Mikumo with illustrations by Miyuu.

After their fierce battle in Nagoya and their horrible discoveries about the Japanese populace-turned-Moujuu, Yahiro and Iroha are headed to Kyoto for answers. There, they plan to meet the mysterious Karura Myoujiin who called for them. What they didn’t expect to find is Marquis Eusebius Berith and the Galerie’s European HQ soldiers. Though the marquis heaps praise and accolades on Giuli and Rosé, it’s not that easy to pull the wool over the twins’ eyes! They know he’s up to something, and they’ve got some schemes of their own in motion. With Karura’s help, hopefully they can learn the truth about the dragon mediums and the world—but what they discover may not lead to the salvation they wished for…