The Legend of the Five Rings Companion
From the back:
"Emerald Empire is a comprehensive guide to Rokugan that will help you get to that point, whether you are a GM or a player. It mixes detailed writing descriptions of various aspects of Rokugani life, from politics and war to commerce and basic rhythms and rituals of daily existence, with handy reference material for those wish to know anything and everything from exactly who answers to whom in the bureaucracy of the Imperial Court to the kinds of exotic treasures available in the Islands of Spice and Silk."
The books contains:
- Many charts and plot hooks, such as random encounters and item availability charts.
- Rules for vassal families
- An Appendix with 350 sample characters, ranging from rank 1 to 5.
- Rules for Dojos, institutions that grant you some type of mechanical benefit.