by Greg Bear
(1979)
Publisher: Tor Books
Kawashita passed up the chance to die honourably with the carrier HIRYU. When the aliens plucked him from the sea, he thought they would kill him, but instead they gave him a world of his own to rule. Then suddenly he was amongst humans again, in a world four centuries distant from the one he left.
Yoshio Kawashita is a great warrior until aliens whisk him away during World War II. They put him on a desolate planet far from his home, where he is destined to remain forever, leaving him alone in his new hell. Then Anna Nestor appears.
This empress does not see planets as homes for their inhabitants; she sees exploitable real estate. At first, Anna Nestor views Kawashita as a sideshow attraction until they fall in love. But the two lovebirds cannot be free until they find out who kidnapped Kawashita and why.