A book summarizing the 20-year history of the ".hack" series. This is an anniversary book that compiles everything about the ".hack" series, celebrating the 20th anniversary since the release of the first game in the series for the PS2. The book includes not only the game, but also many visuals and valuable setting materials from the anime, novels, comics, and other works. In addition, there are interviews with developers, a reader survey feature, original manga, and more.
