Japan has many volcanoes. One of them in KAGOSHIMA(鹿児島) prefecture in KYUSYU(九州), named SHINMOEDAKE, erupted yesterday. It was for the first time in 7 years. By the smoke of the volcano, many flights were cancelled. KAGOSHIMA prefecture is very far from KANSAI area, so there is no direct influence, but there is the possibility of cancellation of flights from OSAKA to KAGOSHIMA after this. You should check the information about the flight, if you have a plan to go there.