Death March to the Parallel World Rhapsody, Vol. 21 (Light Novel)

"After parting ways with Hayato the Hero, Satou and the party visit Parion Province and indulge in rich sights and regional delicacies. However, the highlight of their stay in Parion is the Village of Adepts. There, Tama, Pochi, and Satou get a crash course in the ninja arts. But not long after their training begins, their fellow students start to go missing. The disappearances seem to be connected to a Holy Woman and a mysterious ritual unfolding behind the scenes. But it wouldn't be a Satou adventure without a healthy balance of tasty treats and death-defying feats"--