Main Cast Rain Ji Woo Lee Na-young 진이 Daniel Henney 카이 Lee Jung-jin Yoon Jin-seo 윤형사 Takako Uehara 키에코 Jo Hee-bong James Bong Sung Dong-il 나까무라 황 Gong Hyung-jin Yoon Son-ha 황미진 Claudia Kim Sophie Danny Ahn Baek Nam-jung Seasons Season 1 20 episodes 2010