A decade ago, a young man failed his entrance examination, a single event that cost him more than just his academic future. The same failure also led him to lose the woman he loved. Now, ten years later, his former love is married and appears to be living a contented life with a husband who vowed to cherish her forever. However, this seemingly happy marriage is shattered by a dark secret: the husband is having an affair. When evidence of this betrayal is presented to the heroine by an unexpected person, the stage is set for a dramatic and painful reunion with the ex-boyfriend who re-enters her life at its most vulnerable moment. The series, described as a drama centered on infidelity as well as themes of hate and betrayal, is set in a contemporary Japanese context, focusing on the complex emotional fallout of a crumbling marriage and the rekindling of old flames. The narrative revolves around these three central characters: the heroine trapped in an unfaithful marriage, her former boyfriend from a decade past who is given a potential second chance, and her cheating husband whose broken vows drive the conflict. Written and illustrated by prolific shōjo manga creator Ema Toyama, known for popular titles such as Love Mission and Vampire Dormitory, this work began serialization in Shogakukan's Betsucomi Flower digital magazine in November 2024, where it is currently ongoing.