Tensei Shitara Last Boss Kei Akujo datta!

I've been reincarnated as Duchess Diana, the final boss villain before her awakening. What's more, I'm already in a political marriage with the Ice Duke, my daughter is terrified of me, and our home is cold and distant. In the future, I'm destined to be consumed by negative emotions and awaken as the final boss, only to be defeated by my daughter's heroic lover—but I refuse! I want to live a harmonious, stress-free life, free from negative emotions! With that resolve, I decided to improve my relationship with my husband and shower my daughter with affection…!?

The story of a strangely behaved duchess escaping her final boss villainous ways begins in spectacular fashion!

(Source: Ichijinsha, translated)