鬼ン業　山阿誘魔性　九段坂怪奇叢書弐

After more than half a year since "that day," Kudanzaka Yamahiko, though bearing various scars, is gradually returning to normalcy. Prompted by the illness of his companion, Kaguro Isora, he heads north to a region steeped in kappa legends. There, he encounters another mysterious incident along with new acquaintances.