Japan's exports to South Korea dropped sharply last month amid escalating tensions between the two countries.
Tokyo's finance ministry says Japan's shipments to South Korea in October were down some 23 percent on-year to around 3.5 billion U.S. dollars.
Big declines were seen in particular in food, automobiles and semiconductors.
Exports have fallen due mainly to a South Korean boycott of Japanese goods stemming from Tokyo's trade restrictions and historical disputes.
Japan saw its trade surplus with South Korea tumble last month by more than 41 percent on-year.