Be logged in; use the deletion link.
URLS:
http://www.cyworld.com/
http://helpdesk.global.cyworld.com/html/member_info.asp?changes=deleteFrm
Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.