The Sea of Japan borders North Korea to the east.
East of North Korea is the Sea of Japan (called the East Sea by Koreans) and on the other side of the Sea of Japan is JAPAN.
The East Sea.
YES. North Korea has coastline along the Yellow Sea in the west and the Sea of Japan (called the East Sea by Koreans) in the east.
That's "East Sea" a.k.a. "Sea of Japan".
The country is bordered by the Democratic People's Republic of Korea (North Korea) to the north, the East Sea (Sea of Japan) to the east, the East China Sea to the south, and the Yellow Sea to the west; to the southeast it is separated from the Japanese island of Tsushima by the Korea Strait.
The Japan Sea.
The Japanese (and most of the world today call it the Sea of Japan. But since 1992, North and South Korea and have disputed the name. North Korea chooses to call it "East Sea of Korea" ans South Korea simply calls it "East Sea." Some contemporary maps have added "East Sea" in parentheses after "Sea of Japan."
Japan is to the east. Russia is to the north and west, North Korea and South Korea to the west. China no longer has any seacoast on the Sea of Japan.
Japan
The countries that border the Yellow Sea are China and North Korea to the west and South Korea to the east.
North or South Korea