Park Yoo-Hwan 's career started when he was cast as a supporting character in the 2011 MBC 's series Twinkle Twinkle . He played the half-uncle to lead actress Kim Hyun-Joo 's character , Han Seo-Woo . While still working on Twinkle Twinkle , Park was cast in a small recurring role as Book-Jo in another MBC 's series Gye-Baek . In his next acting project , the 2011 SBS 's series A Thousand Days ' Promise , Park portrayed Lee Moon-Kwon , the younger brother of lead actress Soo Ae 's character . His performance earned him a nomination at the 48th Baeksang Arts Awards for Best New Actor . In 2012 , Park Yoo-Hwan landed his first leading role in the Channel A 's series K-Pop : The Ultimate Audition , playing Kang Woo-Hyun , the ignorant and bad-tempered leader of boy band M2 . He starred opposite Go Eun-Ah , who played a happy-go-lucky girl named Ji Seung-Yeon . In May 2012 , Park returned to MBC to star in the new daily drama Ca n't Live Without You as Kim Min-Do
48th Baeksang Arts Awards
48th Baeksang Arts Awards
Park Yu-hwan