Absolute Value of Romance Series · 2026· 1 Season· Korean· /10 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.
Created by Lee Min-joo
Cast Kim Hyang-gi Yeo Eui-ju
Cha Hak-yeon Ga Woo-soo
Kim Jae-hyun No Da-ju
DEMIAN Jeong Gi-jeon
Kim Dong-kyu Yoon Dong-ju
Episodes Season 1
1 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. 2 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. 3 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. 4 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. 5 Episode 5 We Were Friends" goes viral. Riding the high, Eui-ju writes the steamiest cliffhanger yet, unaware someone is standing right behind her. 6 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. 7 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. 8 Episode 8 Eui-ju wonders why Woo-su allows her to keep writing her novel. One offhand remark from him sets her heart racing. 9 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. 10 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. 11 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. 12 Episode 12 Dong-ju's secret is revealed. Eui-ju reconciles with Go-ya, and encouraged by her advice, decides to confess feelings. 13 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. 14 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. 15 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. 16 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. 
Kim Hyang-giYeo Eui-ju
Cha Hak-yeonGa Woo-soo
Kim Jae-hyunNo Da-ju
DEMIANJeong Gi-jeon
Kim Dong-kyuYoon Dong-ju