MBC's Friday-Saturday drama 'Undercover High School' (written by Lim Young-bin, directed by Choi Jeong-in) captivates viewers ...
On February 17, his agency Management Koo stated, “Yoo In Soo will be making a special appearance ... High School and the villainous son of Choo Sung Woong, the enforcer of the Yeonbaek gang.