Full cast of HeartBeat

Ok Taec-yeon

Seon Woo-hyeol

16 episodes

Won Ji-an

Joo In-hae

16 episodes

Yoon So-hee

Na Hae-won / Yoon Hae-sun

16 episodes

Park Kang-hyun

Shin Do-sik

16 episodes

Ko Kyu-pil

Park Dong-seop

16 episodes

Yoon Byung-hee

Lee Sang-hae

16 episodes

Moon Seung-you

Rose

16 episodes

Baek Seo-hoo

Ri Man-hwi

16 episodes

Baek Hyun-joo

Go Gi-sook

16 episodes

Jung Young-ki

Kim Gwang-ok

16 episodes

Ham Tae-in

Chief Goo

16 episodes

Kim In-kwon

"Cat Man" Go Yang-nam

16 episodes

Kim Do-geon

Kim Min-jae

16 episodes

Park Cheol-min

Butler Joo

16 episodes

Lee So-i

Na Rae

16 episodes

Seo Hyun-chul

Joo Dong-il

16 episodes