The sale of future fighter jets to other nations is part of Japan's strategy to not limit itself to a supporting role in global defense projects. The move comes amid neighboring China's emergence as an aggressive military power, which concerns Tokyo given the many disputes it has with Beijing in the East and South China Seas. China's frequent war games with Russia around Japan haven't soothed nerves either.
Japan has already broken from its decades-long principle of pacifism, but that's not all Tokyo wants to do. By loosening its lethal weapon export rules, on top of expanding its military partnership with the US, Kishida's government is slowly working its way toward terminating Article 9 of the Japanese Constitution, which prohibits the military from engaging in warfare. Given Japan's history of aggression, the entire region will be on high alert, not just China.
Japan's increasing interest in military affairs will be complex from any perspective. Japan's military posturing, through alliances and its existing offensive capabilities, always had Beijing on the radar. While China is currently focused on increasing economic pressures, it will now be forced to redirect resources and shift its focus away from its financial issues. Tokyo's change symbolizes the increasing challenges of navigating the "multipolar world."