A thirty-year-old working woman named Honoka is having the worst day. After her fiancé abruptly dumps her, she falls down a flight of stairs and loses consciousness. When she wakes up, she is no longer in her own world. She has been reincarnated as Clarisse, a seventeen-year-old aristocrat, in the exact world of Fated, Love～A Cinderella Story～, a light novel her younger sister used to obsess over. Armed with her foreknowledge of the plot, Honoka realizes she has become the story's designated villainess, fated to meet a miserable end alongside the primary antagonist, Eduard, the younger brother of the crown prince.

Determined to rewrite the narrative and secure a happy life, Honoka-as-Clarisse attempts to steer clear of her predicted downfall. However, upon her first meeting with Eduard, she is immediately confused. He is gentle, clever, and handsome—nothing like the foolish and wicked character described in the novel. To her astonishment, the two fall for each other almost instantly. Her shock deepens when she discovers the truth: Eduard is not the original character either. He has also been reincarnated, from the same modern Japan as Honoka, where he was a decent businessman. They are two reincarnated souls sharing the secret of the original story's tragic end.

The setting is a classic fantasy aristocratic society governed by noble courts and magical elements. The primary conflict stems not only from the pair's efforts to avoid their predetermined roles as villains but also from the interference of the original story's protagonists. The heroine of the light novel behaves completely differently from her written character, creating unexpected obstacles, while Prince Arnold, Clarisse's former fiancé, begins to show a jealous and possessive nature when he sees Clarisse flourishing without him. Together, Clarisse and Eduard navigate these social and romantic traps, using their knowledge and their genuine affection for each other to forge a new path.

Notable narrative arcs include the immediate aftermath of the reincarnation, where Clarisse endures a miserable home life with a bullying sister and a neglectful father who expects her to tolerate degrading treatment. The story follows her tactical escape from the engagement to the neglectful Prince Arnold and the slow revelation that Eduard is also a reincarnatee. A central source of dramatic irony is that both Clarisse and Eduard initially believe the other is the original, dangerous character from the book, leading them to try and avoid each other while secretly being drawn together. The manga concluded its run in December 2025, with the story covering their journey to dismantle the original unhappy ending and build a future together.