Many of the k-drama actors who play high school students are actually 20-something but despite the age difference they manage to make their roles seem quite believable.

The latest to make the grade as a high school student is Seo In Guk in "High School King of Manners." The comedy switches back and forth between the classroom and the boardroom but Seo In Guk does a good job of actually acting like a high school student even in corporate settings. His brash and often immature behavior is interpreted as confidence in a workplace setting.

He's had some experience.
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