From the introduction:
“Honor and Eta” is a D&D Oriental Adventures scenario set in the world of Rokugan that is designed to challenge four 1st-level player characters. The adventure can be adjusted for characters up to 8th level by increasing the strength and number of the villains as described in the “Scaling the Adventure” sidebar. Characters with a high regard for honor would be most suited for this adventure. A shaman or a shugenja would prove to be helpful. Characters who complete the adventure should gain enough experience to reach the midpoint to the next level.
Note: Honor is important in Rokugan-some might say more important than life itself. The honor “level” of every NPC is noted in their respective stat blocks after alignment. See page 68 of Oriental Adventures for more information on honor.