Here is the link to AA (Alcoholics Anonymous) that is held in Seoul:
http://www.aainkorea.org/index.html
There is an attendance of about 15-20 members presently.
Here is the link to Adult Children of Alcoholics in Seoul (ACOC).
http://www.meetings.adultchildren.org/find-a-meeting-search-results
The group is in the beginning stages and more and more members are joining.