<Ul> <Li> Kim Hyun - joong as Baek Seung - jo </Li> </Ul> <Li> Kim Hyun - joong as Baek Seung - jo </Li> <Dl> <Dd> Baek Seung - jo is the smartest and the most handsome guy in the high school . He is rumored to have an IQ of 200, but has a cold attitude . Ha - ni writes him a love letter which he rejects, claiming he hates stupid girls . When Ha - ni and her father move in with his family, he still continues his cold attitude towards her, but warms up to her over time and slowly falls for her . Eventually, he proposes to Ha - ni and decides to be a doctor instead of inheriting his father's gaming company . </Dd> </Dl> <Dd> Baek Seung - jo is the smartest and the most handsome guy in the high school . He is rumored to have an IQ of 200, but has a cold attitude . Ha - ni writes him a love letter which he rejects, claiming he hates stupid girls . When Ha - ni and her father move in with his family, he still continues his cold attitude towards her, but warms up to her over time and slowly falls for her . Eventually, he proposes to Ha - ni and decides to be a doctor instead of inheriting his father's gaming company . </Dd>

Playful kiss season 1 episode 1 english subtitles