Mr. Back

Mr. Back is a South Korean television series based on the web novel Old Man, which was serialized on KakaoPage from April to October 2014. It starred Shin Ha-kyun, Jang Na-ra and Lee Joon. The series aired on MBC from November 5 to December 25, 2014, for 16 episodes.

Synopsis
Choi Go-bong (meaning "highest peak" or "highest salary") is a 70-year-old man who runs a large hotel conglomerate, and he's known nothing but greed and selfishness all his life. When his body suddenly transforms back into his 30s, he becomes gleeful at the chance to relive his youth. He renames himself Choi Shin-hyung (meaning "newest model"), and meets Eun Ha-soo, a part-timer who's just landed her first regular job. Because of Ha-soo, he learns what love is for the first time in his life. At the same time, he develops a relationship with his estranged son and troublesome heir, Choi Dae-han.

Main

 * Shin Ha-kyun as Choi Go-bong/Choi Shin-hyung
 * Jang Na-ra as Eun Ha-soo
 * Lee Joon as Choi Dae-han
 * Park Ye-jin as Hong Ji-yoon

Supporting

 * Jung Suk-won as Jung Yi-gun
 * Hwang Bo-ra as Yoo Nan-hee
 * Go Yoon as Kang Ki-chan
 * Jo Mi-ryung as Choi Mi-hye
 * Jeon Gook-hwan as Choi Young-dal
 * Hwang Young-hee as Lee In-ja
 * Lee Moon-sik as Sung Kyung-bae
 * Lee Mi-do as Son Woo-young
 * Lee Mi-young as Go Jung-sook
 * Kim Byeong-ok as Go-bong's doctor
 * Cho Seung-hee as Herself