With historical and international facts and statistics, I can tell you that the name "East Sea" is a far more appropriate name for the "Sea of Japan." Sea of Japan is a reminder of the history between South Korea and Japan. East sea is not Japan's territorial sea. In the old maps and old geography books of Korea and Japan, none of them shows the name, "Sea of Japan". However, "East Sea" is a name used since a long time ago between Koreans. The first record of "East Sea" was in The History of the Three Kingdoms. Therefore, I hope you to correct 'Sea of Japan' to 'East Sea'. If it is difficult to replace, I suggest a method of marking at the same time.
Thank you for taking the time to read my message, and I hope you will correct this wrong naming to its proper name, 'East Sea.' I look forward to hearing from you.
Have a good day.