This artbook collects many of Happoubi's works throughout his career dating all the way back to 1997.

The book is made up of 128 pages printed front and back on thick, high quality paper. Pretty much the entire book is filled with illustrations, aside from one page of comments from Happoubi Jin himself about some techniques he used on select pieces of work. A little more than half the book is comprised of his most recent original illustrations within the past few years, followed by roughly equal parts game and other works spanning his entire career.

Basically, to sum things up, this is a pretty high quality book as expected of Japanese published artbooks, and I would have absolutely zero problems in recommending this collection of art to somebody who either likes Happoubi Jin or just likes nicely illustrated anime ladies.
(From yuuwaku.wordpress.com)