[DeepL Translation - needs review] Introduction to Volume 1: Kion-do Cave, also known as "Oni-no-hagure-no Ana," is said to have a "miraculous spring" that has the power to heal illness, and is said to be inhabited by an ox demon named Koga-doji. The gruesome corpse discovered in front of the cave on that fateful night was only the beginning of the tragedy that was to follow. A precise and rich masterpiece of a mystery novel, sprinkled with designs from stories of the past and present, and h...
