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Kim Hyang Gi, Cha Hak Yeon, Kim Jae Hyun, Sohn Jeong Hyuck, and Kim Dong Gyu confirmed for K-Drama Absolute Value of Romance

Rachel M. Reeves February 10, 2026

A fresh school romance story is on the way, as Kim Hyang Gi, Cha Hak Yeon, Kim Jae Hyun, Sohn Jeong Hyuck, and Kim Dong Gyu have officially been confirmed as the main cast of the upcoming K-drama Absolute Value of Romance.

Directed by Lee Tae Gon, who is known for his work on True to Love, the series promises a unique blend of imagination, romance, and school life drama.

A story where fiction and reality collide

Absolute Value of Romance centers on Yeo Ui Ju, an ordinary high school student who secretly leads a double life as a romance novelist. Her stories often feature handsome teachers as fictional protagonists, but things take a surprising turn when she begins encountering real-life counterparts who resemble the characters she has imagined.

As her creative world begins to overlap with reality, Ui Ju finds herself drawn into unexpected relationships and emotional challenges within her school environment.

The drama itself explores themes of adolescence, creativity, and romantic fantasy, while examining how imagination can shape and complicate real-life connections.

Kim Hyang Gi takes the lead as a secret novelist

Kim Hyang Gi will portray Yeo Ui Ju, the imaginative protagonist at the heart of the story. By day, she blends in as a typical student, but by night, she expresses her inner thoughts through romance novels.

Known for her emotional depth and nuanced performances, Kim Hyang Gi will likely bring complexity to a character who exists between reality and fiction.

Cha Hak Yeon joins as a brilliant yet reserved genius

Cha Hak Yeon, also known as N of VIXX, will play Ga Woo Su, a cold yet charismatic mathematical prodigy with an IQ of 156 and membership in Mensa.

Despite his intellectual brilliance and aloof demeanor, Ga Woo Su becomes an important presence in Ui Ju’s life, creating anticipation for the chemistry between the two characters.

Cha Hak Yeon’s casting adds further intrigue, as fans look forward to seeing him embody a character defined by both emotional distance and hidden depth.

A trio of teachers adds charm and variety

Completing the main lineup are Kim Jae Hyun, Sohn Jeong Hyuck, and Kim Dong Gyu, each portraying teachers who capture Ui Ju’s attention in different ways:

  • Kim Jae Hyun will play Noh Da Ju, a lively and multilingual Japanese language teacher known for his bright personality and ability to uplift those around him.
  • Sohn Jeong Hyuck will portray Jung Gi Jeon, a charismatic physical education teacher whose strong presence and confident charm make him stand out.
  • Kim Dong Gyu takes on the role of Yoon Dong Ju, a gentle and kind Korean language teacher who offers warmth and emotional support.

These characters represent the romantic archetypes that Ui Ju writes about, and apparently now encounters in real life.

Anticipation builds ahead of April premiere

With its imaginative premise and diverse cast, Absolute Value of Romance is already generating excitement among K-drama fans.

The drama is scheduled to premiere in April on COUPANG TV and I, for one, am eager to see how this story of creativity, romance, and self-discovery unfolds on screen, aren’t you?

About the Author

Rachel M. Reeves

Author

Avid K-drama watcher for over 20 years. Rare I find a Korean series I don't love.

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Tags: Cha Hak Yeon Kim Hyang Gi Kim Jae Hyun

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