Yukimura Rina, an overworked systems engineer, has been reincarnated as Ekaterina Yulova, a seventeen-year-old noble lady...and the villainess of the game she obsessed over in her past life! Though she swore she’d prevent her and her brother’s doom by never interacting with the heroine, Flora, or her main love interest, the prince, Ekaterina finds herself unable to avoid them at school. See, there’s one teeny tiny issue: Flora is the sweetest young lady Ekaterina has ever met, and the two become fast friends after bonding over cooking. To make matters worse, the final boss, whose existence threatens the peace of the empire, has made an appearance in the Yulnova Duchy! Will Ekaterina be able to fight off the dangers and lead her dearest brother and her new friend toward a happy future?