Hye-jin Park

Kim Soon Boon [Gwang Nam's mother and So Ri's grandmother], Gim Sun-bun

Se-Hyun Jang

Jo Kyung-joon

Oh Yeong-Sil

Hwang Mi-ja

Tae-Woong Yoo

Jo Dong Man [Kyung Joon's father], Jo Dong-man

Cheol-ho Hyeon

[Gwang Nam's secretary], Oh Kwang-nam's assisstant

Cheol-Ho Park

Park Ki Tae, Park Gi-tae

Dal-Hyeong Lee

Kang Nam Choon [Yoon Ah's father], Kang Nam-chun

Bum-sik Hwang

Oh Tae Bong [Gwang Nam's father and So Ri's grandfather], Oh Tae-bong

Sung Hyun Mi

Yang Yang Daek [Gwang Nam's housemaid], Yang Yang-daek

Joo-ri Kim

Shin Do Hee [Nursing assistant], Sin Do-hui

Hwang Woo Yun

CEO Yoon [Next CEO], Next CEO Yoon