After a fatal accident caused by her childhood friend Hina, a woman who once worked in a company’s public relations department is reborn as Cordelia, the villainess of an otome app game called The Flower of Rakisen. To her delight, she finds herself engaged to Crown Prince Isaac, her most beloved character from the game. But she knows the game’s plot: the prince will eventually fall for the saint and break off the engagement, leading Cordelia to a bad end. Resigned to her fate, she decides to savor every moment of her relationship with Isaac until the inevitable breakup.

However, her plans are disrupted. Her former friend Hina has also reincarnated into this world as the saint Elrina, and she is openly pursuing Isaac. When Isaac confesses to Cordelia that the saint has threatened to destroy the kingdom if he does not annul their engagement, he adds that he does not want to let her go. This unexpected declaration shifts Cordelia’s resolve. She discovers that she herself possesses holy magic, and she decides to become the saint in order to free Isaac from the threat and secure a happy ending for them both.

A public vote will determine who becomes the Great Saint. Drawing on her real-world experience in public relations, Cordelia launches a campaign of self-promotion, using charm, strategy, and her knowledge of the game world to win popular support. Along the way, she must navigate political intrigue, the growing tension between herself and the other saint candidate, and Isaac’s increasingly possessive yet subtly expressed feelings for her. The story unfolds as a romantic comedy centered on a determined villainess who refuses to surrender her love story to the original script, and a stoic prince who gradually reveals how much he truly values her.