2004 · ソースブック（プレイを拡張するルール／オプション）

Way of the Thief

This dual-system supplement explores the criminal underworld of Rokugan, including smugglers, bandits, pirates, criminal cartels, and shadow conspiracies. It provides setting information on criminal organizations and centers of illicit activity, along with NPCs and campaign ideas for groups opposing these forces or joining them. New feats, schools, classes, and character options support criminal figures, magistrates, and Imperial investigators. The book is designed for the second edition Legend of the Five Rings Role-Playing Game and the Rokugan d20 setting, with material also usable in other d20 System campaigns.