The Wrong Way to Use Healing Magic Volume 4

Usato and his friends have earned the respect of the leaders of the Wizardry City of Luqvist, who agree to help the Llinger Kingdom stand against the Demon Lord's forces. Usato then parts with Suzune and Kazuki, and together with Amako, Blurin, and their guard Aruku, he sets off for their next destination--Samariarl.
On the way, however, Usato hears a young girl's cry for help, and finds her surrounded by zombies. After fighting them off, the girl tells him that a necromancer is running wild and pleads for his help.
"Please," she says, "save our village."
Usato can't refuse people in need. He takes it upon himself to rid the village of the necromancer that terrorizes it, but he's about to find out that there is much more to the village than meets the eye!