Kim Hyang-gi leads the cast of Coupang Play's latest K-drama, Absolute Value of Romance, which premiered on April 17, 2026. The show follows the story of Yeo Eui-ju, a high school girl secretly writing BL web novels about her teachers.
Meet the Cast of Absolute Value of Romance
The drama boasts an impressive lineup of actors, each bringing their unique charm and talent to the series. Kim Hyang-gi plays Yeo Eui-ju, a high school girl who tries to keep a low profile at school but secretly becomes a writer, posting adults-only BL novels online. Despite her enthusiasm, her work barely gets any views – though she is highly observant and empathetic, she has always been hopeless when it comes to real-life romance.
Kim Hyang-gi Brings Yeo Eui-ju to Life
Kim Hyang-gi is widely credited with grounding the drama's blend of comedy and coming-of-age emotion. The actress has gained a reputation for her nuanced performances, having previously starred in Along with the Gods: The Two Worlds (2017) and its 2018 sequel. Her portrayal of an autistic girl in Innocent Witness (2019) received critical acclaim, and she was nominated for Best Actress at the 55th Baeksang Arts Awards for the role.
Cha Hak-yeon's Cold-but-Compelling Portrayal
Cha Hak-yeon plays Ga Woo-su, a cold math prodigy-turned-teacher. Cha noted that he adjusted his naturally soft speaking style to fit the character's "sharp and prickly" personality. Ga Woo-su is a genius math teacher with an IQ of 156 and is a Mensa member who rarely smiles. He once lived as a child genius before a serious accident nearly took his vision. Cha Hak-yeon's portrayal has been a fan favourite since the drama's premiere, earning him particular praise from viewers.
The Drama's Talented Ensemble
The Absolute Value of Romance cast features a talented lineup of actors who bring the K-drama's quirky premise and heartfelt coming-of-age story to life. Alongside Kim Hyang-gi and Cha Hak-yeon, the show stars Kim Jae-hyun, Son Jeong-hyeok, Kim Dong-gyu, and Kim Jun-hyung. Each cast member adds charm, humour, and emotional depth to the series, making it a must-watch for fans of K-dramas.
A Closer Look at the Cast
Kim Jae-hyun plays the wealthy polyglot Noh Da-ju, a Japanese language teacher with a bright personality. He is a Japanese teacher with a bright personality who brings playful, comedic energy to the group of four teachers. Kim Jae-hyun had previously appeared in Weightlifting Fairy Kim Bok-Joo (2016) and starred in the Japanese drama Love You as the World Ends (2021). Son Jeong-hyeok, known professionally as Demian, plays Jung Gi-jeon, a retired luge athlete turned sports teacher. He depicts a character who appears cheerful and steady on the surface yet carries a deeper emotional story.
The Drama's Premiere
Absolute Value of Romance premiered on Coupang Play on April 17, 2026, and is also available for streaming on Amazon Prime Video internationally. The show has received positive reviews from fans and critics alike, praising the cast's performances and the drama's unique storyline. As the show continues to air, fans are eagerly awaiting the next episode to see what happens next for Yeo Eui-ju and her classmates.
Source: Tuko
