JS Izumo (DDH-183) is a helicopter carrier (officially classified by Japan as a helicopter destroyer) and the lead ship in the Izumo class of the Japan Maritime Self-Defense Force (JMSDF). But many see JS Izumo is aircraft carrier, because Japan plan to order F-35 jet fighter which had variant STOVL version (the F-35B).
That could make JS Izumo a deadly aircraft carrier