anon below and i rec'ed the chansoo record store au in the fic rec thread above but here's the links again for convenience's sake:
http://necahual.livejournal.com/28032.html
http://necahual.livejournal.com/29272.html

http://ourhandsfroze.livejournal.com/23693.html
never let you go au for chansoo. depressing but hurts so good.

http://everymine.livejournal.com/1545.html
have some cutest kid!fic chansoo to ease your pain after the one above.