Kouhoubu Shusshin no Akuyaku Reijou desu ga, Muhyoujou na Ouji ga "Kimi wo Tebanashitakunai" to Iidashimashita広報部出身の悪役令嬢ですが、無表情な王子が「君を手放したくない」と言い出しました; The Villainess from the PR Department and the Prince Who Won’t Let Her Go

Using her "PR skills," she aims for a happy ending with her favorite character from her previous life! "The Saint threatened to destroy the country if I didn't break off our engagement," is what Cordelia, the villainess, tells her fianc, Crown Prince Isaac. "I don't want to break off our engagement," she says, and Cordelia is not going to let the Saint hand him over to her! Then she discovers that Cordelia can use holy magic. If that's the case, then I'll become the Saint and set Her Highness free! With the vote to decide the Great Saint on the line, she puts her pride as a member of the PR department of her previous life on the line and works hard to produce herself (Source: ComicWalker, translated)