Well, this particular posting is according to miyo's post in LoveKHJ is for those residing in Japan only. I am shoving this here in case someone may just find the need for it. As for the international fans, sorry don't have info yet.
To everyone in Japan who wants to be part of this, goodluck! I am quite sure that applying would be quite difficult as many would like to be a part of this.
[Trans] Kim Hyun Joong SHOWCASE & BIRTHDAY TOUR in Korea 10th May(Tue) 19:00~ Application on First come First Served Basis Starts!!
Source: KHJ Japan Official Site
Japanese~English Translation: miyo @lovekimhyunjoong.com
A special tour has been decided where members will be able to participate in Kim Hyun Joong's SHOWCASE and Birthday party in Seoul next month.
■10th May 2011 (Tue) 19：00～
※This tour will be accepting on a first come first served basis.
■A Course：Departing 6th June 2011 (Mon) ～ 8th June 2011 (Wed) 3 Days 2 Nights
■B Course：Departing 5th June 2011 (Sun) ～ 8th June 2011 (Wed) 4 Days 3 Nights
■ Participating in Kim Hyun Joong new album SHOWCASE
■ Participating in Kim Hyun Joong Birthday Party
Please access to the website below for application.