People who give others what they wish they had. Sometimes people can be bitter and envious of what others got. I think it takes being a bigger person to accept that you didn’t receive it then, and you can still give it to others.
I’m mostly talking about things like time, attention, patience, tolerance, affection, and positive reinforcement/affirmation. Just because you had a bad time, doesn’t mean others have to experience it.
Japan annexed Korea back around WWI - WWII, and committed a fair amount of atrocities. I believe that the older generations of Korea do not like Japan, understandably. I don’t think it’s common for younger Koreans to share the same sentiment of the older generation