This is "A Challenge to You," a collection of works by Tatsumi Aikawa and Yuki Shasen-do, authors making waves in the mystery world. Included works: - Tatsumi Aikawa "Murder in the Aquarium Castle" - Yuki Shasen-do "An Ordinary Sleep" Enjoy authentic mysteries filled with surprise and logic from the new generation of authors. This is a book that offers high reader satisfaction. [Condition] - The book has never been read and is in overall very clean condition. - The first edition limited-edition sealed pages "The Challenge" have been opened. - There is a slight crease on the top of the cover (please check the 4th image), but otherwise, there are no noticeable scratches or stains, and it can be read without any issues. [Shipping] The item will be placed in an OPP bag to prevent water damage and shipped anonymously in an envelope. Immediate purchase is welcome.