To whom it may concern,  

Hoping this email finds you well, I am Juyeon Ko, and I am a highschool student in South Korea.  

First of all, I would like to thank you for providing useful information.  

However, I sent this email because I found an error within your work. 

Currently, I have been participating in a campaign in which participants correct clerical errors of Dokdo and East Sea/Sea of Japan in the Internet.

While researching for an assignment, I found out that the map that you posted marked the name of sea located between Korean peninsula and Japan as Sea of Japan. 

According to the resolution made in UN and other international organizations, the appellation of a shared geographical feature must be written side-by-side if the countries directly involved cannot make settlement. 

Therefore, the proper designation method of the area is East Sea/Sea of Japan. since there has been no consent between South Korea and Japan regarding it.

In case you want some references for further understanding, I also attached a website link that explains about this matter. 

Besides, I hope this email will feed into your journal, and I would appreciate if I can get a reply once you check this. 

Thank you and have a wonderful day. 

Yours Sincerely 

Juyeon Ko