I've only read it once. The content-rich fan book "Freedom" includes not only an explanation of the world and story of this work, but also copyright illustrations from the time of broadcast to recent years, and newly drawn illustrations by character designer Hisashi Hirai. In addition, it features a roundtable discussion with five voice actors: Toshihiko Seki (as Rau Le Creuset), Akira Ishida (as Athrun Zala), Tomokazu Seki (as Yzak Joule), Akira Sasanuma (as Dearka Elsman), and Mami (as Nicol Amalfi), as well as a three-way discussion with voice actors Soichiro Hoshi (as Kira Yamato), Houko Kuwashima (as Flay Allster), and Satoshi Tsuruoka (as Sai Argyle), and congratulatory message shikishi from the production staff from the time of the 20th anniversary. The setting materials collection "Justice," which contains settings for characters, mecha, etc., includes art boards that color the background of this work, as well as a staff roundtable discussion looking back on the 20 years with director Mitsuo Fukuda, scriptwriter Hiroyuki Yoshino, and script/special setting writer Shigeru Morita (Studio Nue).