This is a set of four mystery novels. "Swan" and "The Righteous Child" were purchased new and read once. The others are used but in good condition, I believe. Please refrain from purchasing if you are overly concerned about the condition, as they have been stored by a private individual. I am open to considering exchanges with books from other sets. Please feel free to consult with me. I am not considering any changes to the number of books or the price. #Katsuhiko Kure - Swan #Jo Sasaki - Refractive Index #Tameto Somei - The Righteous Child #Seinan Sato - Silent Voice: Behavioral Psychology Investigator