Park Hyung Sik and Seo Kang Joon's Buried Hearts and Undercover High School air every Friday-Saturday on SBS and MBC, respectively. (Instagram / @sbsdrama.official / @mbcdrama_now) Despite ...
Park Hyung Sik's Buried Hearts beat Undercover High School's TV ratings. Seo Kang Joong flipped the close competition in his favour on buzz rankings.
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