本城 奏

"You know nothing about the scariness of magical books." A private detective hired by Yugyouji's main family. She appears before the protagonist and his friends as they get involved in magical book events and tells them about the danger. While she appears to be a competent detective, when she gets mad, she ignores her surroundings and goes berserk. She is intensely vigilant about magical books, and while she does not wish to let the children get involved with the books, stories continue to unfold around them regardless of whether they like it. [Translated from official website]