Let Me Be Your Knight

Jung In-sun

In Yoon-joo / Kang Sun-Ju

Lee Jun-young

Yoon Tae-in

Jang Dong-ju

Seo Woo-yeon

JR

Lee Shin

Yoon Ji-sung

Kim Yoo-chan

Kim Dong-hyun

Ga-on

Seo Hye-won

Jung Ba-Reun

Ahn Ha-young

Chae Ji-Yeon

Kwak Ja-hyung

CEO Moon

Lee Se-chang

CEO Jang

Park Ji-won

Hyo-bin

Seo Yi-soo

In Yoon Jo | In Sun Joo [Child] (Ep. 1, 9, 11)

Jo Eun-seo

[Teen who Catches a Falling Woo Ga-on]

Park So-eun

Hong Jae-eun

Ju-A

Writer Kim Yeon-jung