Actor Lee Hyun Woo has transformed from a sweet actor to an all-around idol!

KBS 2TV's 'Murim School' dropped some still cuts of his impressive change ahead of the first broadcast on January 11.  In the drama, he plays born idol, Yoon Si Woo - and he does so with ease, showing no awkwardness on stage while grasping the mic in the still cuts.  His character is not only a skillful rapper but also a producer, who gets entangled in a situation he had not even known about, resulting in his enrollment into Murim School. 

Lee Hyun Woo said, "Yoon Si Woo is a top idol who is lacking in nothing, from his looks to his talents.  In order to get even closer to the character, I did my best, practiced, and prepared."

The still cuts were taken from a concert scene.  In order to make it as real as possible, he even trained himself in rap and sharp dance movements!  The production crew stated, "We heard that for the concert scene, Lee Hyun Woo used his personal time in order to practice the rap and dance.  He could debut as an idol right away.  Please look forward to the first episode of 'Murim School' where you can witness Lee Hyun Woo's perfect mastering of everything from acting to action for his all-around idol character."

Check it out on the 11th!

SEE ALSO: Yoon Si Yoon showcases slimmer look after signing with a new agency