Thank you for viewing. This item was found at my parents' house. It is the Bandai strategy guide "SD Gundam SD Sengokuden Country-Stealing Story Bandai Complete Victory Book." This is a rare book with limited distribution. There are folds and stains on the cover. In addition, there is age-related deterioration overall, but there is no problem with reading it. It comes as a set with the Game Boy software. I have not been able to confirm the operation of the software because I do not have the actual device.