Yoo Ah-in
Han Se-joo / Seo Hwi-young (16 eps)
Lim Soo-jung
Jeon Seol / Ryu Soo-hyeon (16 eps)
Go Kyung-pyo
Yoo Jin-oh / Shin Yool (16 eps)
Kwak Si-yang
Baek Tae-min / Heo Young-min (16 eps)
Jo Woo-jin
Gal Ji-seok (16 eps)
Oh Na-ra
Secretary Kang (Se-joo's secretary) (16 eps)
Yang Jin-sung
Ma Bang-jin (16 eps)
Jeon Su-kyung
Wang Bang-wool (16 eps)
Kang Hong-suk
Won Dae-han (16 eps)
Ji Dae-han
Won Man-hae (16 eps)
Cheon Ho-jin
Baek Do-ha (16 eps)
Jo Kyung-sook
Hong So-hee (16 eps)
Seo Hye-Jin
Ribera (16 eps)
Shim Min
Mi Young (16 eps)
Kim Seong-hoon
Lee Jung-bong (16 eps)
Park Sun-im
Hanna Kim (16 eps)
Choi Seo-yeon
Seol's colleague (16 eps)
Cha Gun-woo
Yool's butler (16 eps)
Jeong Yeon-joo
Bang-jin's colleague (16 eps)
Kim Hyun-sook
Doctor Soo (16 eps)
Cha Soon-hyeong
Japanese police (16 eps)
Jo Yeong-hoon
Veterinary surgeon (16 eps)