One day, Duke’s daughter Alexia regains memories of her past life as a Japanese woman in her thirties. With this recollection, she realizes she has been reincarnated into the world of an otome game as the villainess destined for ruin. Simultaneously, her long-held romantic feelings for the prince vanish, replaced by the practical desire to avoid the story’s condemnation event. She decides to gracefully withdraw from the selection of the prince’s fiancée candidates before the game’s heroine appears. Confident in her high social status, wealth, and the support of her father and brother, Alexia resolves to enjoy a peaceful, independent life free from romantic entanglements, dubbing this her Defeat Flag Crushing Operation.

The main protagonist is Alexia, a glamorous and strong-willed duke’s daughter who fully embraces the villainess role but refuses to suffer the consequences of it. Her past life as Yuka Arimori, an ordinary single woman, provides her with a mature, pragmatic perspective that prioritizes self-preservation over love. Key characters from the original game’s world include the prince, who is initially the object of Alexia’s past obsession, and the heroine’s prospective love interests. Her supportive family provides a safety net, enabling her independent plans.

The story is set in a standard aristocratic fantasy world inspired by otome game tropes. The narrative follows Alexia as she tries to distance herself from the original plot’s events. However, her plan to resign as a fiancée candidate proves difficult to execute. In a pivotal turn, she accidentally pulls a holy sword from its resting place, an act that draws the attention of several of the heroine’s original capture targets. One of these is Ian, a character who begins to show clear romantic interest in Alexia, leading to an unexpected date. As various characters become intrigued by her, her carefully laid plans for a solitary life are continuously challenged, forcing her to navigate the romantic attention she swore to avoid.