The Legend of Heroes: Zero no Kiseki-Ao no Kiseki The Official Crossbell Data Archives (英雄伝説 零の軌跡 碧の軌跡 公式設定資料集 クロスベルアーカイブ?) is the official data collection book for the Zero/Ao no Kiseki duology. It wad released on April 27, 2012.
- All the new artwork of the main cast, designed by Enami Katsumi
- The "Trails of Crossbell" explained in full, by Nihon Falcom's full supervision.
- Introduction to new settings hidden within the story.