まだ、読了していませんが、予想していたよりも平易な英語です。センテンスが短い。 英語力に自信のない人でも原文を読んでいれば、概ね理解できそうです。 日本語の方は、3回読みましたので、こちらも最後までいきたい。

Japan's most highly regarded novelist now vaults into the first ranks of international fiction writers with this heroically imaginative novel, which is at once a detective story, an account of a disintegrating marriage, and an excavation of the buried secrets of World War II. In a Tokyo suburb a young man named Toru Okada searches for his wife's missing cat. Soon he finds himself looking for his wife as well in a netherworld that lies beneath the placid surface of Tokyo. As these searches intersect, Okada encounters a bizarre group of allies and antagonists: a psychic prostitute; a malevolent yet mediagenic politician; a cheerfully morbid sixteen-year-old-girl; and an aging war veteran who has been permanently changed by the hideous things he witnessed during Japan's forgotten campaign in Manchuria. Gripping, prophetic, suffused with comedy and menace, The Wind-Up Bird Chronicle is a tour de force equal in scope to the masterpieces of Mishima and Pynchon.