Writing about Tongdaemun Market, I can just make observations. Language is not a crucial thing to understand everyday culture. Korean women are more opinionated. They express their opinions or openly challenge you if they disagree with you. Japanese women tend to make you feel comfortable and are too polite to challenge you.
Korean women are really judgmental and moralistic.
With sex and drugs, they can be morally conservative and prudish. They are uptight in that respect. But they have a desire to be free, so they are conflicted about a lot of issues. I find it strange. They'll condemn me if I do something bad, but they'll express a desire to do it.