Shin Won-ho exchanges souls with Gong Yoo in 'Big'
3-second Song Joong-ki Shin Won-ho has been cast for the role of Kang Kyeong-joon in the new KBS 2TV drama "Big". Kang Kyeong-joon is a 18-year-old adolescent teenager who coincidentally changes souls with Seo  Yoon-jae (Gong Yoo) a successful doctor in his 30s. He is also an uncontrollable student of Gil Da-ran (Lee Min-jung) and feels profound emotions while sharing a body with Seo  Yoon-jae. , Big, Gong Yoo, Lee Min-jung, Shin Won-ho, Song Joong-ki
Source: hancinema.net