Rapid-fire rap artist Outsider will be leaving the music industry for his army duties on December 21st. A representative of his agency, Sniper Sound, commented, "Outsider had always wanted to enlist by the end of this year, and recently took the step to volunteer. Our agency respects his decision - he will be enlisting on December 21st at a training camp in Chuncheon." Although he recently released his 3rd album, "Protagonist," Outsider will be wrapping up his promotion activities to spend some down time alone before he joins the military. Outsider will also be holding a concert on December 10th and 11th at the 'Rolling Hall', a club in Hongdae, as a parting gift for fans to remember him. We wish him the best of luck! Source: OSEN