TV series
High schooler Yeo Eui-ju secretly writes web novels by night. When four charming new teachers arrive, they inspire her stories and shake up her school.
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Checked Jul 22, 2026
High schooler Yeo Eui-ju secretly writes web novels by night. When four charming new teachers arrive, they inspire her stories and shake up her school.
Cast, crew and production details
Kim Hyang-giYeo Eui-ju
Cha Hak-yeonGa Woo-soo
Kim Jae-hyunNo Da-ju
DemianJeong Gi-jeon
Kim Dong-kyuYoon Dong-ju
Han Su-hoHo
Nam Hae-junJin
Kang ShinYeon-hee
Coupang PlaySouth Korea
Borderless FilmSouth Korea
MediaCorpSingaporeWatch options above are for the show and may vary by season or episode.
Episode 1
Eui-ju is a quiet student by day and a bold romance writer by night. Her future seems uncertain as the man she wronged becomes her homeroom teacher.
Guest stars Han Su-ho, Nam Hae-jun, Kang Shin, Baek Hyun-joo, Jeong Si-hyun, Lee Seung-joon, Lee Jae-hee, Yang So-min
Where to watch Absolute Value of Romance
Episode 2
A sweet scene between teachers ignites Eui-ju's creativity. She casts them as leads in her new novel. During PE class, Gi-jeon makes her heart skip.
Guest stars Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 3
Eui-ju hides Woo-su's glasses after stepping on them by mistake. Given his demerits and tough task, she trashes them, thinking he's picking on her.
Guest stars Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 4
Once she realizes the glasses were special, Eui-ju digs them out of the trash but still gets a detention. She posts her F4-inspired web novel online.
Guest stars Lee Jae-hee, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 5
We Were Friends" goes viral. Riding the high, Eui-ju writes the steamiest cliffhanger yet, unaware someone is standing right behind her.
Guest stars Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 6
Woo-su demands she delete everything. Now forced to write the novel on his terms, Eui-ju hits a wall. Meanwhile, the principal has plans of her own.
Guest stars Baek Hyun-joo, Lee Seung-joon, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Kim So-hui
Where to watch Absolute Value of Romance
Episode 7
On the EBC filming day, Da-ju urges Eui-ju to film Woo-su's class secretly, but she gets caught. She collapses and Woo-su carries her to the hospital.
Guest stars Baek Hyun-joo, Jeong Si-hyun, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 8
Eui-ju wonders why Woo-su allows her to keep writing her novel. One offhand remark from him sets her heart racing.
Guest stars Lee Seung-joon, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui
Where to watch Absolute Value of Romance
Episode 9
As Eui-ju denies Woo-su's words made her flutter, a Fields Medal winner visits him. Misunderstood as liking Dong-ju, Eui-ju grows awkward with Go-ya.
Guest stars Baek Hyun-joo, Jeong Si-hyun, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Jung Da-on, Kim So-hui
Where to watch Absolute Value of Romance
Episode 10
Feeling inadequate, Eui-ju writes Deul-i as a villain in her novel. Woo-su considers a research proposal in the US, and the prospect makes Eui-ju sad.
Guest stars Baek Hyun-joo, Jeong Si-hyun, Lee Jae-hee, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Jung Da-on
Where to watch Absolute Value of Romance
Episode 11
Ji-a is captured by loan sharks. Woo-su gets in trouble trying to rescue her. Just as things look hopeless, someone arrives to save them both.
Guest stars Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui, 이경원, Ha Seon-jae
Where to watch Absolute Value of Romance
Episode 12
Dong-ju's secret is revealed. Eui-ju reconciles with Go-ya, and encouraged by her advice, decides to confess feelings.
Guest stars Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim, Kim So-hui, Ha Seon-jae, 주진수
Where to watch Absolute Value of Romance
Episode 13
Eui-ju's hesitant to confess. She realizes she's just a student to Woo-su. When Ha-su discovers her novel, her heart races with fear of being exposed.
Guest stars Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Kim So-hui
Where to watch Absolute Value of Romance
Episode 14
The entire school finds out about the novel. Word reaches Young-hee, and Eui-ju must bring her parents to school. She tells her parents the truth.
Guest stars Baek Hyun-joo, Lee Seung-joon, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim
Where to watch Absolute Value of Romance
Episode 15
Eui-ju is crushed after seeing how well Woo-su treats Deul-i at her guest lecture. After class, Eui-ju poses a life-defining math problem to Woo-su.
Guest stars Baek Hyun-joo, Lee Seung-joon, Lee Jae-hee, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun
Where to watch Absolute Value of Romance
Episode 16
Eui-ju rushes to the hospital after hearing that Woo-su had eye surgery. She finally learns the truth behind the promise made ten years ago.
Guest stars Lee Seung-joon, Lee Jae-hee, Yang So-min, Gladys Bay, Jang Jae-young, Han Se-hee, Roh Ju-eun, Yoon Hye-rim
Where to watch Absolute Value of RomanceEpisode information updated Jul 22, 2026
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