นักแสดง
Kwak Dong Yun as Choi Jung Woo
� �-Baek Sung Hyun as adult Choi Jung Woo
� �-Kim Kyung Min as Middle school student Jung Woo (ep 1)
� �-Lee Joon Myung as Elementary school student Jung Woo (ep 1)
Lee Se Young as Yang Ah Young
� �- Yoo Da Mi as adult Yang Ah Young (ep 4)
Kwak Jung Wook as Im Duk Won
Choi Tae Joon as Lee Yuk Ho
Park Jung Min as Shin Young Bok
Bae Noo Ri as Jang Hyun Jin
Yoon Park as Lee Won Il