Fairy Tale in the Secret Room of the Ancient House

It happened to 18-year-old boys in the 1920s. They were in the rebellious period, but they had no idea that one of their wrong decisions led to the final tragedy. All their friends had lost contact, and he wandered alone in this secret room alone, encountering many strange things, solving the mystery? Escape? Or choose to miss it? This is his only choice. If you choose, then you have to fulfill your promise. Only you can travel your own way, and no one can replace your existence. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.