My Ex-husband is 18

At 27, Yoon Harin meets her end in the flames—betrayed and nearly murdered by her

husband, Kang Siwoo. But when she opens her eyes, she finds herself back in her

high school days. With the resentment and thirst for revenge from the brink of death

still burning inside her, Harin vows never to fall victim again in this life.

Yet the Siwoo of the past still stands before her, and unexpected events—different from

her previous life—begin to unfold one after another. Harin becomes entangled in the

school’s power dynamics, Siwoo’s ex-girlfriend Jung Sera, and the enigmatic Seo

Jihoon, all while navigating constant conflicts and psychological battles.

What began as a calculated move for revenge slowly wavers as Harin learns the

hidden truths and genuine feelings behind Siwoo’s actions. Will she repeat the tragedy

of her past life, or will she create a new ending? Harin’s choice will determine both of

their fates.