Zeitaku Zanmai shitai no desu! Tensei shita noni Binbou Nante Yurusenai node, Mahou de Ryouchi Kaikaku

On her fifth birthday, Sallestia remembers her previous life and her life of poverty with the shock of a blow to the head... And now, to her surprise, she understands that she has been reincarnated as the villainesss in an Otome game! "I was poor in my previous life, and now that I've been reincarnated as a nobleman's daughter, I'm going to enjoy all the luxuries!" But... The servants and villagers of the estate are all skinny and on the verge of starvation...? I can't allow myself to be poor in my reincarnation! I'll use magic to reform the estate and make the villagers and myself rich!