The Green book was created when Tomi was 15. Tomi had been opressed by DFXZ and because she believed the GUNDAMs to be the only ray of hope in her crushed world, She spent hours upon hours of research, and then analyzing what she believed to be the truth of the statements. She then compiled it into a tiny green notebook that was 6'' by 4''. DFXZ insisted that Tomi use the book for them and give them all the information on the Gundam, but Tomi refused to let anyone come near her book. She always kept it with her, as if it was the only thing in her life that kept her alive. During this time, it had been two years since DFXZ killed her father and took her two brothers away from her. Tomi wasn't about to give up hope yet and in AC 196, she found a way to escape the reaches of DFXZ and created a group called the MTA. The MTA was contructed of 8 members, two of which were Gundam pilots. All of the MTA members were orphans since they could remember, and they all found Tomi's offer too good the pass by. By day, MTA worked as a military MS repair shop, doubling as a junk-yard that sold good parts. By night, they were a group of "Assassins", a small rebel group agaist organizaions like DFXZ, White Fang, or Oz. Tomi lent the MTA members her Green Book which had information on every known model in that time. From this Book, Tomi and MTA created a new Gundam system and a new model. Unfortunately, DFXZ caught on to Tomi's plans and forced her to give her private operation to DFXZ. With the help of the leader from MTA, Kyo Kumagai, Tomi sabotaged the ICONs(Interpersonal Communication operative Network), the "keys" the the new models so that only one person could wear it without the ICON destroying their inner ear. In this way did Tomi regain possession of Akaikaze, and her dreams for a peaceful future away from Rouge and DFXZ. Tomi always has the book on her, because it possesses a great deal of information and knowlege that has made Tomi known as the youngest Gundam expert in this era. However, only one person has ever been able to knock away her barrier and knows the true secrets within the book. But Tomi trusts him whole-heartedly, because, in more ways than one, Heero had saved her life.
Anyone with possession of the Green Book may find themselves overwhlemed by the vast information on the pages of the tiny 50 page book, but the book is not to taken lightly, even if it does have some of Tomi's dark humor written upon them. If in the wrong hands, the book could be used for even more trouble, which is why if Tomi doesn't have the book, it can be found with Heero, and he'll never tell where he hid it.
Further on in the story, the Gundam W boys are found reading the book and laughing at the various comments that Tomi has wirtten about them. Rest assured, Heero had already seen the full extent of the book, and he wouldn't let anyone else touch it or flip through it. This book has to have something important written in it for Heero to want to preserve those secrets, the words that Tomi wrote from her findings and unusual understandings that, if figured out, could be put to bad use.
