Is Haruki Murakami considered fantasy/sci-fi? 1Q84 involves parallel worlds and the supernatural. The Wind-up Bird Chronicle also involves the supernatural and a dream reality. Would questions on these books be considered on topic for SFF.SE?
Both those and many of his other works fall squarely into the literary tradition of magical realism, which is usually considered to be sf. Some have additional links to the sf tradition, such as the parallel history in 1Q84 or the science fantasy elements in Hard-Boiled Wonderland.
His work has been reviewed often in genre publications.
You will find many of his works in the ISFDB.
Because closing is governed by community votes no one can promise genre-killing reactionaries won't close the question (and there are some on the site), but well, they're genre-killing reactionaries.