Anna Hiiragi, a dedicated researcher at a pharmaceutical institute, was conducting studies on snake venom when an accident occurred—she was bitten and died. However, when she opened her eyes again, she found herself reincarnated as Leticia, the daughter of a marquis in the Olgaria Empire on the continent of Aurelian! Although initially confused by her new life, Anna—now Leticia—decides to use her medical knowledge and newfound magical abilities to become a healer and help as many people as possible. But as she continues her noble efforts, she catches the attention of the crown prince and a gallant knight, leading to unexpected twists in her new life...