The Reprise of the Spear Hero manga volume 10 features story by Aneko Yusagi and art by Neet.

“It sure has changed since the last time I was here.”

A deadly illness has spread from the dragon corpse left unburied as a tourist spectacle. The shadow of death falls over the village to the east. Following Wyndia's wishes, Naofumi and Motoyasu head there to try to put a stop to the plague. But the attitude of the villagers, who want a scapegoat for their misfortune, push the heroes to their limit …

The heroes, seeking a proper burial for Gaelion and Wyndia's father, head to the site of the corpse—only to find it transformed into a dragon zombie!