I wasn't familiar with Kei Koboyashi until now, but I'm definitely intrigued now! I really loved the art and feel of this book. While the cover appears to be hardbound, it is actually rather flexible and bends like cardstock. Page corners are rounded, and the monochrome art is extremely interesting, with truly incredible skill in shading. I also find this book lies flat better than any other artbook I own. A great buy for fans of unsettling, disorienting, sketchy art.