Konyakusha-sama ni wa Unmei no Heroine ga Arawaremasu ga, Zantei Konyaku Life wo Mankitsu shimasu! Kiraware Akujo no Neko Tenseitan

Lucille's fiancé, the second prince, accuses her of a crime she didn't commit and then breaks off their engagement. Not only that, but her unjust punishment is a new betrothal to a cursed marquess! After a prophetic dream foretells her eventual execution, Lucille awakens to memories of her past life...as Lilybell, the world's most lovable cat, whose previous owners throughout history happened to include a great witch, a legendary alchemist, and a chosen hero. According to her dream, Lucille's new fiancé, Felix, already has a fated love destined to appear in the future. In other words, it's only a temporary engagement, so why shouldn't she just kick back and relax? With her super positive mindset and the skills she inherited from Lilybell's owners, Lucille soon finds herself helping the people around her. She also discovers the truth of her past companions and begins to unravel the mystery behind Felix's curse.

(Source: J-Novel Heart)