This is a book explaining Go (囲碁) opening theory. - Title: The First Step in Opening Theory - Price: 705 yen + tax This is a palm-sized Go book. I think it's easy to read even when traveling. I've included a photo with a ballpoint pen for size comparison at the end. The ballpoint pen is not included. It is new, unused, and in beautiful condition. Please take a look at the photos and consider purchasing if you understand that it is stored at home. ◉ We will take measures to prevent water damage when shipping. ◉ We can also combine purchases with other products. ◉ If you have any areas of concern, we will add additional enlarged photos. ◉ If you have any other questions, please feel free to comment. Thank you for looking.