Gonji

"Renegade half-breed samurai Gonji Sabatake has left the survivorsof devastated Vedun, certain that his unknown Enemies---with their
mysterious agenda, their monsters and their sorcery---are gathering
strength for yet another attack on him and his allies. Seeking the
aid of misanthropic werewolf Simon Sardonis, Gonji treks into a
16th-century Spain wracked by eerie supernatural forces. Trapped by
his adversaries, Gonji is held captive by fanatical power in the
torture-dungeons of the Inquisition. He learns of the evil cabal that
enslaves multiple worlds and has wrought its venomous power in the
highest offices of the medieval Church.
Condemned to burn at the stake, Gonji is mystically counseled by
a witch whose knowledge of sorcery and science compels him to somehow
escape. For he must lead a refugee army, under pursuit of human and
sorcerous assassins, in a flight across dark seas and into the
interior of darkest Africa. There, to seek a bizarre castle's gateway
to warped spatial anomalies, and learn his singular importance to the
destiny of a system of concentric worlds.
But will that incredible revelation empower or destroy him?
Could any single warrior be expected to undertake the burden of such a
quest? And even with the uncertain help of the powerful lycanthrope
Simon, can Gonji survive the secrets of the... FORTRESS OF LOST
WORLDS?"