Not a great example if it's not a platform for only Korean people. If you have a field for middle name, there will probably be some-one with the language set to

Not a great example if it's not a platform for only Korean people. If you have a field for middle name, there will probably be some-one with the language set to Korean still be interested in reading or writing that field (ie expats learning the language, or perhaps people with mixed heritage?). I think assuming because Korean (people) have no middle names you don't need to translate it is more careless than the other way around.