Dying from overwork was the end of her diligent life! After dying of overwork in 21st-century Korea, Eirin is reincarnated as the youngest daughter of a count's family, planning to just lounge around and live off her family. However, while trying to solve a crisis for her family, her hidden competence is accidentally exposed. From that moment on, the relentless courtship of the Northern Grand Duke begins. A headhunting romance between Eirin, an aspiring slacker who just wants to live comfortably, and Cael, the Northern Grand Duke determined to win her over.