The Unwanted Undead Adventurer Novel Volume 9 was written by Yu Okano and illustrated by Jaian.

Last time, Rentt managed to defeat Shumini the vampire with the help of Lorraine, Isaac, and all the rest of his companions. To take control of the dungeon core without taking Rina’s life, he had to turn her into a vampire and make Rina his familiar.

With that behind them, the threat to Maalt has been taken care of, and the dungeon has safely come under the control of Rentt and his group. But they’re not the only ones eager to explore the newly formed dungeon! News of the dungeon attracts the interest of adventurers from all over, and they flock to Maalt in droves.