Ha Seok-jin

King Yeonsan / Yi Gyu

Ryu Seong-hoon/Im Sung-hoon

A magistrate

Model (Ep. 11)

Seo Jin Park Min-Sang as teenage Seo Jin

Ri Mu-hyeok

A patient (Ep. 11)

Kim Ji-woon, a man from a prominent family who ends up working as a housekeeper.

Seo Woo-jin

Lee Jae-in, a third generation chaebol heir who currently runs the SH hotel. He is arrogant and has a filthy mouth which brings him to clash constantly with his grandfather. He is strict and workaholic which earns him the wrath of Da-hyun, but after he falls in love with Da-hyun

Jin Jung-suk (Jin-sang)

Han Woo-jin

Nam Woo-seok

Kim Joon-goo

Oh Joon-young, Hae-woo's husband. Noh Young-hak as young Joon-young

Ahn Sung-ki

Lee Young-gyun

Lee Tae-young

Kang Yoo-ji

Kim Yoon-soo

Hwang Chan-min

Kim Jin-gyu, Yoo-na's brother

Suk-jin