my theory on jk “j” tattoo is that it’s actually meant for tzuyus name. basically , in HANGUL the official south korean language, tzuyus name is spelt “쯔위” and in romanisation that is actually correct (lol) her name is meant to be “Juu-wui”... In korean the letter ㅈ = J , it’s pronounced as “j” also jk name starts with the same thing , “정국” ... If J in Korean is ㅈ . could that possibly mean the tattoo is cryptically “Tzuyus” name