Actor Choi Jin Hyuk (29) was revealed to have gotten injured in the military as he's currently doing his mandatory service.

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His agency, Red Brick House, revealed on June 16 to The Fact, "While receiving training, Choi Jin Hyuk sustained an injury to his knee.  His knee had never been good, but it appears to have worsened.

"Choi Jin Hyuk is currently admitted into the hospital and had undergone surgery.  We need to watch over the situation a bit more.  We're hoping he will recover from the injury and return."

Meanwhile, he enlisted back in March.  Feel better soon!