Im Ji-kyu

Park Do-jin (ep. 6)

Park Hyun-tae

Young adult Hae-jin (cameo, Ep. 11-12)

King Woo, the 32nd King of Goryeo.

Kim Byeong-ho, a ghost artist of painter Jo Hyun-seo

Dong-pal

Ji-hoon's older brother

Nam Dong-woo

Kang Seung-min

Kyung-Soo, a police officer and I-gyeong's step brother.

Yi-young's blind date (Ep. 10)

Assistant Kim

Lee Seung-soo, a 43-year-old radio program director.

Oh Yoon-gi

Park Hyun-suk

Gunman

..... Secretary Min

Shim Dong-chun

Heo Gyun

Ryu Jin-woo

Se-kyul's homeroom teacher

Byun Sang-woo

Kim Jae-seok (Jin's manager)

Kang-woo

Sung-chan