2003 · ソースブック（プレイを拡張するルール／オプション）
Secrets of the Crane
A dual-system sourcebook for Legend of the Five Rings and Oriental Adventures, this supplement examines the Crane Clan of Rokugan through its history, provinces, customs, families, and notable figures. It provides character options, techniques, abilities, and mechanics for groups such as the Empress' Guard, Daidoji Trading Council, and Kakita Artisan Academy. The book primarily supports Game Masters, with adventure material covering Crane territories, the Daidoji Harriers' hidden stronghold of Shiro Giji, and the clan's concealed scandals and mysteries. It updates the setting's ongoing story and includes new fiction, background material, and options for d20 System campaigns.
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。