Kim Jung-Gi is a Korean art instructor, cartoonist, and animator. This is the first of his three massive self-published sketchbooks that everyone has been talking about. You may have seen the videos online; it is even more amazing in person.
It is made up primarily of drawings and sketches. Figures, faces, scenes, vehicles, caricatures, animals.... There are also comic book pages (line art and painted), character designs, and illustrations.
Like Terada's Rakugaking, this book screams out "You must own me!"
Includes a fold-out poster. Book and poster are inside a cardboard box inside a sealed silver mylar bag.
Here is a flip-thru courtesy of DrBlackYang: