This 10th anniversary edition collection does a wonderful recap of the many products created for this series beyond just DVD and manga covers. Acting as a history of the series, it shows the various key chains, toy lines (including plushies), bag and uniforms figures, and even advertising campaigns (one with the Chiyo featured on the Keio bus). The book is sectioned into history, sketch art and includes several 4 panel works showcasing the adventures of Chiyo, Tomo, Yomi, Sakaki, Osaka, Kagura, and Kaori, as they work and play through their years in high school together spanning approximately 300 pages. Truly a must have for any fan.