Hyun-woo realizes that he was reborn as the youngest grandson of the Soonyang family, Jin Do-jun. As he comes from the future, he gives useful advice to Chairman Jin Yang-chul, the founder of Soonyang who is now his grandfather. He quickly wins the chairman’s confidence, becoming Chairman Jin’s most adored grandson.
Song Joong-ki
Yoon Hyun-woo / Jin Do-jun
Lee Sung-min
Jin Yang-chul
Shin Hyun-been
Seo Min-young
Yoon Je-moon
Jin Young-ki
Kim Shin-rock
Jin Hwa-young
Jo Han-chul
Jin Dong-ki
Kim Nam-hee
Jin Seong-joon
Park Ji-hyun
Mo Hyun-min
Jeong Hye-young
Lee Hae-in
Kim Young-jae
Jin Yoon-gi
Kim Jung-nan
Shon Jung-rae
Kim Hyun
Lee Pil-ok
Kim Do-hyun
Choi Chang-je
Seo Jae-hee
Yu Ji-na
