Choi Yeo-jin

Song Mi-jin.

Choi Jin-nyeo

Jang Hee-soo - Hee-tae's sister who was once a ballerina but because of her collapsing and becoming a paralytic, she could only observe around her family, often imagining herself having conversations with her family in her head.

Shim Ji-hye, assistant professor of surgery

Jeon Ji-hoo

Baek In-kyung

Ahn Tae-yeon (vocal teacher)

Park Seo-yeon

Jang Soo-jin

Ok Ji-young

(cameo, ep 1)

Jo A-ra, 1st year general surgery resident

(cameo)

Deborah Hong

Noh Jem-ma

Moon Ji-young