An ordinary high school girl who likes to read horror stories has a special ability by chance. Step by step, she turns into an expert ghost hunter. The people and things around her also undergo earth-shaking changes. As dusk falls, why are the teaching buildings more lively than during the day? Why is the first floor a taboo in school? Is the light of the endless staircase salvation or another endless abyss?
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
