the “ghost” rumor in the old building turns out to be one of Kanna’s classmates. People thought they were seeing a ghost because the figure kept appearing in the abandoned building and disappearing quickly, which made the situation look supernatural. But when Chuzenji-sensei and the others investigate, they realize it’s actually a student who had been going there, which created the misunderstanding. The episode again shows how rumors and incomplete information can easily turn an ordinary situation into a ghost story.