Full cast of Let Me Be Your Knight

Jung In-sun

In Yoon-joo / Kang Sun-Ju

12 episodes

Lee Jun-young

Yoon Tae-in

12 episodes

Jang Dong-ju

Seo Woo-yeon

12 episodes

JR

Lee Shin

12 episodes

Yoon Ji-sung

Kim Yoo-chan

12 episodes

Kim Dong-hyun

Ga-on

12 episodes

Seo Hye-won

Jung Ba-Reun

12 episodes

Ahn Ha-young

Chae Ji-Yeon

12 episodes

Kwak Ja-hyung

CEO Moon

12 episodes

Lee Se-chang

CEO Jang

12 episodes

Park Ji-won

Hyo-bin

12 episodes

Seo Yi-soo

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

12 episodes

Jo Eun-seo

[Teen who Catches a Falling Woo Ga-on]

12 episodes

Park So-eun

Hong Jae-eun

12 episodes

Kang Ji-young

Nina

1 episode

Kim Tae-woo

Bully

1 episode

Shim So-yeon

Nurse

1 episode