Absolute Value of Romance

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. (Source: Prime Video)

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. (Source: Prime Video)

Eui Ju hides U Su's glasses after stepping on them by mistake. Given his demerits and tough task, she trashes them, thinking he's picking on her. (Source: Prime Video)

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. (Source: Prime Video)

"We Were Friends" goes viral. Riding the high, Eui Ju writes the steamiest cliffhanger yet, unaware someone is standing right behind her. (Source: Prime Video)

U 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. (Source: Prime Video)

On the EBC filming day, Da Ju urges Eui Ju to film U Su's class secretly, but she gets caught. She collapses and U Su carries her to the hospital. (Source: Prime Video)

Eui Ju wonders why U Su allows her to keep writing her novel. One offhand remark from him sets her heart racing. (Source: Prime Video)

As Eui Ju denies U Su’s words made her flutter, a Fields Medal winner visits him. Misunderstood as liking Dong Ju, Eui Ju grows awkward with Go Ya. (Source: Prime Video)

Feeling inadequate, Eui Ju writes Deul I as a villain in her novel. U Su considers a research proposal in the US, and the prospect makes Eui Ju sad. (Source: Prime Video)

Ji A is captured by loan sharks. U Su gets in trouble trying to rescue her. Just as things look hopeless, someone arrives to save them both. (Source: Prime Video)

Dong Ju’s secret is revealed. Eui Ju reconciles with Go Ya and, encouraged by her advice, decides to confess her feelings. (Source: Prime Video)

Eui Ju's hesitant to confess. She realizes she's just a student to U Su. When Ha Su discovers her novel, her heart races with fear of being exposed. (Source: Prime Video)

The entire school finds out about the novel. Word reaches Yeong Hui, and Eui Ju must bring her parents to school. She tells her parents the truth. (Source: Prime Video)

Eui Ju is crushed after seeing how well U Su treats Deul I at her guest lecture. After class, Eui Ju poses a life-defining math problem to U Su. (Source: Prime Video)

Eui Jurushes to the hospital after hearing that U Su had eye surgery. She finally learns the truth behind the promise made ten years ago. (Source: Prime Video)