Beautiful young Taniko struggles under oppression as the mistress of the cruel Kublai Khan, and Jebu, a young monk, is transformed into a fierce warrior, in a saga of the ancient Orient during a time of bloodshed and magic. The over-all story is about how Jebu and Taniko are forced onto opposing sides of a civil war, and Taniko's growth as a woman whose fate moves her from one powerful man to another, eventually becoming grandmother to a shogun.
The story also focusses on the contrast of hypocrisies between the noble class and warrior class. The nobles consider samurai beneath them but act in many of the barbarous ways that they accuse them of, and the samurai are presented as ruffians of shifting loyalties, despite considering themselves to be genteel and worldly. Source: wikipedia.
Also by Robert J. Shea on obooko:
All Things Are Lights
The Saracen: Book One, Land of the Infidel
The Saracen: Book Two, The Holy War