Asia-Pacific markets mostly fell Wednesday as investors assessed trade data from Japan and the country's new leadership.

Japanese exports in September snapped four months of declines, climbing 4.2% year on year, as shipments to Asia saw robust growth, partially offsetting the drop in exports to the U.S.

Exports, however, missed analysts' expectations of a 4.6% rise, according to median estimates in a Reuters poll of economists.

Prime Minister Sanae Takaichi and her new cabinet were sworn in on Tuesday, with her former rival in the ruling Liberal Democratic Party's leadership race, Shinjiro Koizumi, named defense minister and Satsuki Katayama becoming Japan's first female finance minister.

Japan's Nikkei 225 was down 0.48%, leading losses in Asia, while the Topix index ga

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