NG was (is?) popular Army slang, and American soldiers brought it to Okinawa. From there it spread throughout Japan, leading to its inclusion (stylized the same

NG was (is?) popular Army slang, and American soldiers brought it to Okinawa. From there it spread throughout Japan, leading to its inclusion (stylized the same as OK) in emoji sets, which are historically Japanese. https://emojipedia.org/ng-button https://emojipedia.org/ng-button