Chuzenji doesn't hunt mysteries like some grand detective; he sits in a prep room library and teaches a girl how to read them. Post-war Tokyo becomes the real character here, a place where the supernatural isn't sensational but woven into how people survive what they just lived through. A mentor who actually respects your intelligence enough to make you do the thinking yourself, one strange case at a time.
Post-war Tokyo, 1948. Kanna Kusakabe's second year at high school takes an unexpected turn when she encounters Akihiko Chuzenji, a peculiar new language teacher who seems far too knowledgeable about the supernatural occurrences plaguing her life. Strange phenomena keep finding their way to Kanna: unsettling incidents that defy rational explanation, each one pulling her deeper into a world most people refuse to acknowledge. She discovers that Chuzenji, gruff and deliberately distant, possesses an uncanny ability to unravel these mysteries with unsettling ease. What should be terrifying instead becomes routine as the unlikely pair,a reluctant teacher and an increasingly desperate student,develop an unspoken partnership. Every mystery Chuzenji solves only raises new questions about who he really is and why he seems to know so much about things that shouldn't exist. As supernatural cases accumulate, Kanna begins to suspect her teacher harbors dangerous secrets of his own. Their bond deepens through each investigation, but something about Chuzenji's convenient solutions feels deliberately arranged. The real mystery might not be the mononoke at all, but the man standing between Kanna and the truth.