Unfortunately, this is an error. The name ¡°Sea of Japan¡± was first used during the period of Japanese Imperialism. But the sea had been called the ¡°East Sea¡± for more than 2,000 years originally.
This fact is based on various historical evidence. The correct indication of this sea is not the Sea of Japan.
Therefore, The sea between Korea and Japan should be correctly expressed as the ¡°East Sea¡±.
I ask you to replace the ¡°Sea of Japan '' with the ¡°East Sea¡±. Or at least write with ¡°East Sea¡± Again, I hope you understand that this is not a small issue and that we need your help to fix this problem.
Thank you for reading my long letter.
Sincerely Jinyoung