The Cast of Absolute Value of Romance has attracted the attention of Korean drama fans because of its unique mixture of romance, comedy and coming-of-age themes within a school setting. The South Korean television series set in 2026 revolves around Yeo Eui-ju, a high school student, who is an anonymous romance novelist in addition to being an ordinary student in school. The drama becomes quite intriguing when she gets inspiration from the appearance of four attractive and totally different teachers who enter her life without even realizing that they are serving as her characters’ model in her novel. Kim Hyang-gi takes on the leading role of Eui-ju and delivers a charming performance in the drama. Apart from the lead role, the cast of Absolute Value of Romance features actors like Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok, and Kim Dong-gyu playing teachers Ga Woo-su, Noh Da-ju, Jung Gi-jeon and Yoon Dong-ju respectively.
Cast of Absolute Value of Romance
The Absolute Value of Romance features Kim Hyang-gi playing the leading role of Yeo Eui-ju. She is also supported by Cha Hak-yeon, who plays Ga Woo-su, a mathematical genius, Kim Jae-hyun playing Noh Da-ju, a Japanese teacher; Son Jeong-hyeok plays Jung Gi-jeon, the physical education teacher, and Kim Dong-gyu plays Yoon Dong-ju, the Korean language teacher. Other actors who have played various roles in the series include Kim So-hee, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim and Gladys Bay. Members of Eui-ju’s family who have featured in the series include Lee Seung-joon, Yang So-min and Lee Jae-hee.
Absolute Value of Romance Cast and Characters
The Absolute Value of Romance cast and characters centre on the two-faced life of Yeo Eui-ju. She leads a normal life in the daytime and becomes a romance novel web writer in the nighttime. Her writings get motivated by four attractive teachers in her school. Ga Woo-su is an intellectual maths teacher with a stern demeanour, whereas Noh Da-ju is an intelligent Japanese teacher with charm. Jung Gi-jeon is a PE teacher who is also a former athlete, and Yoon Dong-ju is a soft-spoken Korean language teacher.
| Actor | Character | Role in the Drama |
|---|---|---|
| Kim Hyang-gi | Yeo Eui-ju | High school student and secret romance/BL web novel writer |
| Cha Hak-yeon | Ga Woo-su | Brilliant mathematics teacher |
| Kim Jae-hyun | Noh Da-ju | Bright and charismatic Japanese teacher |
| Son Jeong-hyeok | Jung Gi-jeon | PE teacher and former athlete |
| Kim Dong-gyu | Yoon Dong-ju | Gentle Korean-language teacher |
| Kim So-hee | Choi Go-ya | Eui-ju’s best friend and talented art student |
| Jang Jae-young | Kim Dan-ji | Eui-ju’s friend |
| Han Se-hee | Kim Young-jae | Eui-ju’s friend |
| Roh Ju-eun | Eun Ha-su | Eui-ju’s classmate and mathematics genius |
| Yoon Hye-rim | Choi Ji-ah | Eui-ju’s classmate |
| Gladys Bay | Jenny | Eui-ju’s friend and exchange student |
| Baek Hyun-joo | Kim Young-hee | Supporting character |
| Jung Si-heon | Ha E-den | Supporting character |
| Lee Seung-joon | Yeo Shin | Eui-ju’s father |
| Yang So-min | Oh Yoon-ju | Eui-ju’s mother |
| Lee Jae-hee | Yeo Eui-do | Eui-ju’s brother |
| Jung Da-on | Na Deul-I | Mathematics teacher |
| Min Sun-a | Teacher | Teacher appearing in the school storyline |
Absolute Value of Romance Main Cast
Five completely different personalities can be seen in the key Absolute Value of Romance cast members. Kim Hyang-gi plays the role of Eui-ju in the drama, whose hidden talent of writing causes her troubles. Ga Woo-su played by Cha Hak-yeon is intelligent, quiet and extremely talented at math. The character Noh Da-ju, played by Kim Jae-hyun, is very cheerful and lively. Son Jeong-hyeok stars as athletic teacher Jung Gi-jeon, and Kim Dong-gyu is cast as Yoon Dong-ju, who is calm and thoughtful.
Kim Hyang-gi as Yeo Eui-ju
Kim Hyang-gi acts as Yeo Eui-ju, the main character of Absolute Value of Romance. Eui-ju is a student who lives a double life. She goes to school as a normal student during daytime, but at nighttime, she pens romance webtoon novels under a pseudonym. At first, her writing does not attract much attention, but then comes the four attractive teachers that bring her new ideas for writing. She starts imagining new stories according to their personalities. She shares this secret with Ga Woo-su, making a troublesome situation for her.
Cha Hak-yeon as Ga Woo-su
Ga Woo-su is played by Cha Hak-yeon, a brilliant math teacher. In addition, Ga Woo-su is a mathematics genius who does not reveal his feelings. His serious and reserved nature makes him hard to understand for Eui-ju. Ga Woo-su hails from a family of mathematics and possesses great intellectual capacity. There was an event in the past that shaped his future goals and character. The importance of Ga Woo-su increases when he finds out about the writing secret identity of Eui-ju. The bond between Ga Woo-su and Eui-ju forms one of the core elements of the drama.
Kim Jae-hyun as Noh Da-ju
Kim Jae-hyun acts as Noh Da-ju who is the Japanese language instructor with a vibrant and charming personality. Da-ju is a multilingual and hails from a rich family background. He is also the old friend of Ga Woo-su. The charismatic nature of Da-ju distinguishes him from the timid Woo-su. The personality of Da-ju is so captivating that Eui-ju decides to make use of it in her fictional writings. The encounters between Da-ju, Woo-su and the rest of the teachers have led to many funny moments.
Son Jeong-hyeok as Jung Gi-jeon
The character of Jung Gi-jeon is played by Son Jeong-hyeok, who acts as the physical education teacher at the school. Gi-jeon is a male figure with a sporty background who recognises the talent of Eui-ju in running. He finds out that she is an excellent athlete and thus develops an interest in her sports talent. His masculine attitude distinguishes him from the rest of the teachers. He is also among the characters whose personalities motivate Eui-ju in writing. The sportive background of Gi-jeon adds yet another layer to the school narrative.
Kim Dong-gyu as Yoon Dong-ju
Kim Dong-gyu acts as Yoon Dong-ju, the Korean language instructor, who is renowned for his polite and respectful personality. Yoon Dong-ju acts politely towards the learners and stays calm even in challenging moments. He has the young appearance, which makes him look like one of the youngest among other instructors, despite being the oldest among the four. Calmness makes a difference between Yoon Dong-ju and Woo-su, Da-ju, and Gi-jeon. Yoon Dong-ju becomes another source of inspiration for the writings of Eui-ju.
Supporting Cast of Absolute Value of Romance
The cast members that support the main theme of the Korean drama “Absolute Value of Romance” include the school and family environment. Kim So-hee acts as Choi Go-ya, Eui-ju’s best friend and an art student. Jang Jae-young and Han Se-hee act as Kim Dan-ji and Kim Young-jae, Eui-ju’s classmates. Roh Ju-eun is the actress who plays Eun Ha-su, a classmate who is a good mathematics student. Yoon Hye-rim plays Choi Ji-ah. Gladys Bay acts as Jenny, an exchange student from Singapore. These cast members will help to depict more of Eui-ju’s life besides being a writer in secret.
Kim So-hee as Choi Go-ya
Kim So-hee is cast as Choi Go-ya, who is the best friend of Eui-ju. She is a very talented art student who is one of the members of Eui-ju’s social group in school. The presence of such a character in Eui-ju’s life helps her have company while managing her career as a writer along with the complications of her life in school. Kim So-hee gives her character a youthful appeal. This character is vital as the friends of Eui-ju play an important role in her life other than writing.
Jang Jae-young as Kim Dan-ji
Kim Dan-ji is one of the friends of Eui-ju portrayed by Jang Jae-young. Dan-ji forms part of the larger group of school-going individuals associated with the lead character. The role serves to diversify the setting of the school from that involving just the teacher and students. The presence of Dan-ji serves to enrich the social exchanges between Eui-ju and other fellow students in class. The actor introduces yet another youth character to the show.
Han Se-hee as Kim Young-jae
The character of Han Se-hee comes in as Kim Young-jae, who is yet another friend of Eui-ju. The character of Young-jae is one among the other students who form a part of the student ensemble around the protagonist. This character serves to help develop the depiction of Eui-ju’s life in school. The characters of the other students serve a significant purpose in the drama as this does not confine itself merely to the interrelationships of Eui-ju with the four teachers.
Roh Ju-eun as Eun Ha-su
Eun Ha-su, played by Roh Ju-eun, is one of the classmates of Eui-ju. One characteristic that makes her stand out is her proficiency in mathematics. In fact, she is referred to as a mathematics genius. The role of her character creates a link between her and the mathematics-based storyline involving Ga Woo-su. This character also serves as another academically gifted student in the story. This gives Roh Ju-eun’s role some weight in diversifying the set of student characters away from the protagonist.
Yoon Hye-rim as Choi Ji-ah
Yoon Hye-rim plays the character of Choi Ji-ah, who is Eui-ju’s classmate. Ji-ah is a person carrying emotional wounds because of her life experiences, making her a much more serious character than other characters. The character of Ji-ah is important for the illustration that each of the characters in the drama has his or her own problems and emotions. The character Ji-ah brings more depth to the school environment. Yoon Hye-rim is one of those supporting actors who help the drama in its emotional part.
Gladys Bay as Jenny
Gladys Bay, is an exchange student from Singapore and a friend of Eui-ju. She brings an international flavor to the school setting. She is also part of the group of friends that Eui-ju keeps company with. By having Gladys Bay perform in the drama, there is more cultural diversity in the cast of students in the drama. The character of Jenny is mostly involved in the school and social activities of Eui-ju.
Absolute Value of Romance Family Cast
Eui-ju is that of her family, but wait, it’s not that of Maa?. This particular production is distinct from the one scheduled for 2025, which is Maa? In the drama “Absolute Value of Romance,” Lee Seung-joon acts as Yeo Shin, the father of Eui-ju, while Yang So-min acts as Oh Yoon-ju, the mother of Eui-ju. Yeo Eui-do, who happens to be the brother of Eui-ju, is played by Lee Jae-hee. These family characters give us a sneak peek into the life of Eui-ju outside of school.
Lee Seung-joon as Yeo Shin
The actor who played the role of Yeo Shin, the father of Eui-ju, was Lee Seung-joon. The part of Yeo Shin is associated with the domestic side of life of Eui-ju. While the majority of events are taking place around school, Eui-ju still has to deal with domestic life. The part of Yeo Shin is connected with setting up of this domestic environment. This actor’s experience gives additional information about personality and domestic life of Eui-ju.
Yang So-min as Oh Yoon-ju
Yang So-min portrays the character of Oh Yoon-ju, mother of Eui-ju. She belongs to the family sub-plot line which occurs outside school. She acts as a way of providing a domestic background for the main character. Eui-ju’s relationship with her family forms yet another aspect of the daily life of Eui-ju. Yang So-min brings in an element of a parent into the secondary characters. She balances out the numerous stories set inside school. They portray Eui-ju as more than just a student and writer.
Lee Jae-hee as Yeo Eui-do
Lee Jae-hee. He is a part of the family context where our main character is involved. In this way, we have an additional personal relationship that takes place outside the story between school and teacher. This character is also associated with Eui-ju’s hidden life as a writer. Thus, the family plot acquires importance for the life of the girl as a double one. Eui-do Yeo is the one who adds to the younger family context.
Absolute Value of Romance School Setting
School is an important part of the play because that is where the two worlds of Eui-ju start colliding. Eui-ju goes to school as a normal student but writes romance web novels on the side. The entry of four special teachers inspires her writing. The students in her class add another dimension to the school. These teachers are completely different from each other in their personality and professions. This gives way to lots of scope for humor and misunderstanding. Thus, school is not just a backdrop in the play but plays an integral part of her life.
The Four Teachers in Absolute Value of Romance
The four teachers in the show include Woo Su-Ga, Da Ju-Noh, Gi Jeon-Jung, and Dong Ju-Yoon. The first is the intelligent math teacher with a serious personality. The second is the energetic and humorous Japanese language teacher. The third is the physically fit physical education teacher, and he notices that Eui-ju can run. The fourth is the kind Korean language teacher and he respects his students. Each of these teachers embodies different personalities. Eui-ju draws on their personalities to inspire her fiction writing.
Absolute Value of Romance Storyline
This drama revolves around Eui-ju who is trying to balance her college life with her hidden profession of being a romance novelist on the internet. Her writings initially fail to get any readership but this is all changed by the four handsome teachers. She starts to write characters according to the people that she meets in college. However, her story gains instant fame but her hidden identity also becomes harder to keep. It is ultimately revealed by Ga Woo-su that she was actually the author. This forces her to face the consequences of her fabricated stories becoming true in her real life.
Absolute Value of Romance Genre and Themes
Absolute Value of Romance mixes comedy romance, teenage drama and high school and growing up aspects. The story examines the relationship between fictitious romance and real relationships. Eui-ju finds it easy to write about love, but she lacks practical knowledge when it comes to experiencing it in real life. These are some of the main sources of humor in the show. The drama is also centered on friendship, aspirations and development. The school provides a stage for the drama to examine youth ideals and struggles. Unique premise of the BL web-novel makes the drama stand out in Korean teenage dramas.
Absolute Value of Romance Production Team
The directing duo is Lee Tae-gon and Kim Jun-hyung, and the script is written by Lee Min-joo. The production is handled by Good Wave, Borderless Film and Mediacorp. While the former has done Korean television productions before, the latter has combined both Korean and Singaporean elements in their collaboration. Romance, youth comedy and school drama make up the basis of the creative concept of the show. Five lead actors were officially announced before the launch of the drama series. These actors are Kim Hyang-gi, Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok and Kim Dong-gyu.
Absolute Value of Romance Release Date
Absolute Value of Romance was released on April 17, 2026, on Coupang Play. Absolute Value of Romance is a South Korean drama that speaks in Korean language and follows a Friday release schedule. It was announced to be a teen drama featuring a high school girl writing romance stories on handsome teachers. The distribution of the drama internationally means that the drama is also accessible to viewers outside of South Korea. The April 2026 release is what differentiates it from other productions with similar romance-themed titles.
Absolute Value of Romance Episodes
Some online databases had provided episode details in varied forms for the drama, and hence, it is recommended to be cautious while using any listing before its official release date. The current listing of cast for the show states that the show was made in 2026, but there have been varied episodes listed by some databases. While making an SEO article about such a drama, it is better to refrain from providing an uncertain number of episodes as facts unless proven by the platform listing. The most essential thing is that the series made its debut on April 17, 2026, via Coupang Play.
Where to Watch Absolute Value of Romance
The Absolute Value of Romance originally aired on Coupang Play in South Korea. It has been made available globally via streaming channels such as Prime Video in selected countries. Availability may differ based on your location and whether streaming rights are available. You will need to look for the English name along with the release date of 2026. This makes it easier to find the show among other shows that may have a similar name but are not related to this one. It is an original Korean drama which falls under both romance and comedy genres.
Absolute Value of Romance vs Similar Titles
The title “Absolute Value of Romance” applies only to the South Korean drama of 2026. It should not be confused with any other romances or dramas with similar titles that have anything to do with mathematics or any other type of subject matter. The story centers on a high school girl named Yeo Eui-ju who finds inspiration from four teachers for romance. Kim Hyang-gi stars in the production while Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok, and Kim Dong-gyu play the parts of the teachers. Searching for “2026 Korean drama” will narrow down the search.
Why Absolute Value of Romance Is Worth Watching
One of the biggest selling points of the drama lies in its unique concept. Eui-ju writes romance stories about attractive teachers, but ends up dealing with people who are like that in her everyday life. It makes an amusing parallel between her fantasy world and the world she lives in. Each of the four teachers possesses their own distinct personality traits, making for an individual flavor to each relationship. Kim Hyang-gi brings an emotional core into the drama through the development of Eui-ju’s character.
Absolute Value of Romance Cast and Crew
| Category | Details |
|---|---|
| Drama Title | Absolute Value of Romance |
| Year | 2026 |
| Country | South Korea |
| Language | Korean |
| Genre | Romantic Comedy, Teen Drama |
| Network | Coupang Play |
| Release Date | April 17, 2026 |
| Directors | Lee Tae-gon, Kim Jun-hyung |
| Writer | Lee Min-joo |
| Production Companies | Good Wave, Borderless Film, Mediacorp |
| Lead Actor | Kim Hyang-gi |
| Main Cast | Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok, Kim Dong-gyu |
Absolute Value of Romance: Final Verdict
Absolute Value of Romance presents a great lineup of Korean actors for this unique story of a school romance novel. The star of the series is none other than Kim Hyang-gi, who plays the role of Yeo Eui-ju, a schoolgirl who writes romance web novels. Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok, and Kim Dong-gyu portray four of the teachers whose characters serve as inspirations for her novels. A larger cast comprises students, friends, and family members who make up the world of the series. As a romantic, funny, school, and coming-of-age drama, this series is something new when it comes to the genre of Korean teen dramas. For those looking for information about the Maa 2025 cast or a similar show, it is good to know that Absolute Value of Romance is an entirely different 2026 South Korean drama.
Frequently Asked Questions
Who is the lead actress in Absolute Value of Romance?
Kim Hyang-gi plays Yeo Eui-ju, the main character of the drama.
Who plays Ga Woo-su?
Cha Hak-yeon plays Ga Woo-su, the brilliant mathematics teacher.
Who plays Noh Da-ju?
Kim Jae-hyun plays Noh Da-ju, the Japanese-language teacher.
Who plays Jung Gi-jeon?
Son Jeong-hyeok plays Jung Gi-jeon, the PE teacher.
What is Absolute Value of Romance about?
It follows a high school girl who secretly writes romance web novels and becomes inspired by four handsome teachers at her school.
When did Absolute Value of Romance premiere?
The series premiered on April 17, 2026, on Coupang Play.
Is Absolute Value of Romance a Korean drama?
Yes. It is a 2026 South Korean romantic comedy and teen drama.
Who are the main actors in Absolute Value of Romance?
The main cast includes Kim Hyang-gi, Cha Hak-yeon, Kim Jae-hyun, Son Jeong-hyeok and Kim Dong-gyu.
Also read about: Cast of Maa 2025: Complete Cast, Characters, Story, Crew and More