The production team of KBS’s new drama “Prime Minister and I” recently released stills of actor Yoon Si Yoon, who shed 7kg (approx. 15 lbs) for his role in the drama. Yoon Si Yoon, now 7kg lighter, is showing off a sleeker jawline and a sharper gaze. All together with his short cut, he is giving off a stronger masculine energy, different from his usual boyish image. Looking sharp and classy in his grey suit and white shirt, Yoon Si Yoon, with a slight furrow in one brow, is turning heads with his rougher character. In “The Prime Minister and I,” the actor plays the prime minister’s head assistant, and has a crush on Nam Da Jung (YoonA), who wants more than anything to marry the minister (Lee Bum Soo). Catch the first episode of “The Prime Minister and I” on December 9 at 10pm (KST)!