From a Japanese master of romantic and sexual obsession come two novels that treat traditional themes with sly wit and startling psychological sophistication. In The Secret History of the Lord of Musashi, Junichir Tanizaki reimagines the exploits of a legendary samurai as a sadomasochistic dance between the hero and the wife of his enemy. Arrowroot, though set in the twentieth century, views an adult orphan's search for his mother's past through the...