Goodbye, oppas! At least for the next two years. Several South Korean celebs have confirmed that they'll be enlisting into the army this year, causing heartbreak among their fans. But, looking at how Song Joong Ki went from dongsaeng to oppa after serving his nation, their enlistment should be seen as a good thing, right? Here are 10 Korean stars we'll miss the most when they trade in their dancing shoes for army boots this year.