[Machine Translation] Summer of Taisho 10. Ren Katsuki, a novelist with a secret past, and his junior high school assistant, Haruhiko, are lured by a mysterious letter from an American reporter and set off for Unzen in Nagasaki, a summer resort popular with foreigners. Along the way, they encounter Alice, a beautiful British woman, and an elderly French missionary named Romeo, who is said to have once been involved in the construction of a Catholic church in Japan. Awaiting the group at this beautiful, exotic resort were eerie supernatural phenomena: Screams echoing from the steaming hot springs of Hell, and corpses vanishing without a trace." History and sinister motives lie hidden within this glamorous summer resort. Kazuki and Haruhiko, along with their traveling companions, set out to unravel the tragic mystery slumbering in hell !