[jeemusu]

I've been to Korean parties/events where on several occasions people left without saying anything and then ended up being called back to the party just to say goodbye.

[jrs99]

I've been to a big party in Korea and people left and when someone asked about the people that left, someone said "I think they left." And that was that.

But now that I'm reading about Korean culture on this post, I think this may have been an extremely isolated incident. I don't know what was different about the event I went to however. Could it have been somewhat Americanized? Or maybe an extreme emergency situation where the person had to leave immediately?

[dhfromkorea]

That could likely happen. The context matters. Their American upbringing as implied by your comment might have diluted the cultural influence.