Heartbeat (South Korean TV series)
Heartbeat (Korean: 가슴이 뛴다) is a 2023 South Korean television series starring Ok Taec-yeon, Won Ji-an, Park Kang-hyun, and Yoon So-hee. It aired from June 26 to August 15, 2023, on KBS2's Mondays and Tuesdays at 21:45 (KST) time slot. It is also available for streaming on Amazon Prime Video in selected regions.

Synopsis
Half-human and half-vampire Seon Woo-hyul (Ok Taec-yeon) somehow starts to live together with coldhearted woman Joo In-hae (Won Ji-an). The two fall in love with each other, bringing warmth into their lives.

Cast and characters
Main
Ok Taec-yeon as Seon Woo-hyul: a half-human and half-vampire who had failed to become human due to a one-day difference in 100 years.
Won Ji-an as Joo In-hae: a part-time high school nurse and owner of a guesthouse.
Park Kang-hyun as Shin Do-sik: a real estate development specialist.
Yoon So-hee as Yoon Hae-seon / Na Hae-wonYoon Hae-seon: a member of an aristocratic family during the Joseon dynasty.
Na Hae-won: a real estate investor.

Supporting
Vampires around Woo-hyul
Yoon Byung-hee as Lee Sang-hae: a vampire and a tarot master.
Ko Kyu-pil as Park Dong-seop: a self-employed vampire who runs a snack bar in front of a high school.
Seung-you as Rose: a vampire and a dancer who has a bright and positive personality.
Baek Seo-hoo as Ri Man-hwi: a worldly vampire.

People in the neighborhood
Baek Hyun-joo as Go Ki-suk: a local butcher who runs a butcher shop near Woo-hyul's mansion.
Jung Young-ki as Kim Gwang-ok: owner of a tailor shop.
Kim Do-geon as Kim Min-jae: Gwang-ok's son.

Others
Kim In-kwon as Go Yang-nam: the person who has taught Woo-hyul how to become a human.
Ham Tae-in as Chief Goo: Do-sik's secretary.
Seo Hyun-cheol as Joo Dong-il: In-hae's father.
Park Chul-min as Butler Joo: first generation of a butler family.

Extended
Kim Ba-da as General Shin: a vampire hunter who knows the true identity of Woo-hyul.
Kim Hyun-joon as a fraudster
Seo Jun as Hyang-geun
Jang Seo-yeon as Hwang So-yi: the first guest at In-hae's guesthouse.

Viewership
Notes
References
External links
Official website (in Korean)
Production website  (in Korean)
Heartbeat at HanCinema
Heartbeat at IMDb