The product is a hardback book titled "The sword of Kaigen: Eine theonitische Kriegsgeschichte: Der Fant" by author M. L. Wang. The book is in German and was published in 2025 in the UK. With a length of 49mm and height of 219mm, this first edition book falls under the genre of fantasy and is written in theonitische Kriegsgeschichte, which roughly translates to "history of theonite wars."