Heartbeat (South Korean TV series)

Heartbeat is a 2023 South Korean television series starring Ok Taec-yeon, Won Ji-an, Kang-hyun Park, and Yoon So-hee. It aired on KBS2 from June 26 to August 15, 2023, every Monday and Tuesday at 21:45 (KST). 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.

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.
 * Kang-hyun Park as Shin Do-sik: a real estate development specialist and In-hae's college classmate.
 * Yoon So-hee as Yoon Hae-seon / Na Hae-won
 * 1) Yoon Hae-seon: a member of an aristocratic family during the Joseon dynasty. Woo-hyul's first love.
 * 2) Na Hae-won: a real estate investor.

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.

Music
Heartbeat OST