Namkoong Min
Ahn Dan-tae / Seok Joon-pyo (20 eps)
Bang Min-ah
Gong Shim (20 eps)
On Ju-wan
Seok Joon-soo (20 eps)
Seo Hyo-rim
Gong Mi (20 eps)
Oh Hyun-kyung
Joo Jae-boon (Shim's mother) (20 eps)
Woo Hyeon
Gong Hyeok (Shim's father) (20 eps)
Jeong Hye-seon
Nam Soon-cheon (Joon-pyo's grandmother) (20 eps)
Kyeon Mi-ri
Yeom Tae-hee (Joon-soo's mother) (20 eps)
Kim Il-woo
Seok Dae-hwang (Joon-soo's father) (20 eps)
Kim Byeong-ok
Yeom Tae-cheol (Joon-soo's uncle) (20 eps)
Bang Eun-hee
Cheon Ji-yeon (Dan-tae's aunt) (20 eps)
Sunwoo Yong-nyeo
Dae-hwang's birth mother (20 eps)
Jo Yeon-ho
Seok Joon-pyo (Young) (20 eps)
Shin Soo-Ho
Shin Goo-nam (20 eps)
Choi Hong-il
Ahn Soo-young (Dan-tae's father) (20 eps)
Kim Byeong-se
Law firm president (20 eps)
Geum Bo
Ho Joong (20 eps)
Ahn Su-bin
Kim Dae-ri (Grimreaper) (20 eps)
Go Mi-young
Lawyer Choi (20 eps)
Lee Chae-kyung
Joon-pyo's birth mother (20 eps)