mark the sea between Korea and Japan 'The East Sea'

Maps now inscribe the sea between Korea and Japan 'Sea of Japan'. But it is improper because it has no reason to be inscribed to Sea of Japan. This issue seems to be caused from the ownership of Dokdo, and to get Dokdo, Japan is insisting that the sea should be the sea of Japan. Dokdo is Korean territory precisely. At Chosan dynasty, the ancient time of Korea, Ahn Yungbok, the general, had conquer Dokdo at first and, suppressing Japanese army. But, during the time that Japan colonized Korea, they got the ownership of Dokdo illegally, without any permissions. Some Japanese scholars approved that Dokdo is Korean territory with those reasons. Please see the truth and decide the truth. Please inscribe the sea ' the East sea' and bring Dokdo and the truth back to Korea.