Aye, Shindong is the next one to enlist, followed by Sungmin. But he's holding his enlistment off until after their comeback (Y)
Kangin was the first to enlist in July 2010. So they had all members around Bonamana I think, although that was after Hangeng and Kibum left/quit promoting with the group.
Unless the rest enlist at the same time we won't see the full group until like 2018 or something ;_;
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Anakso's gonna love this: http://bts.ibighit.com
Countdown for BTS comeback