The Japanese have tried to settle the dispute by taking the case to the International Court of Justice (ICJ) 3 times, but the Koreans have refused it all 3 times, claiming that they have no reason to do so. North Koreans, although technically still at war with South Korea, support the South's claim.
Japan: Please get off our land.
Korea: STFU it's mine! Come with a military if you want it!
Rest of the world: What the flying fuck are the Lioncoot Roks?