Nemesis is a Diabolic, a creature with heightened strength and power. A Diabolic has only one mission: To protect their loved one… no matter what. Sworn to protect Sidonia, whose father belongs to the galactic Senate, Nemesis has no mission other than to protect Sidonia. However, when Sidonia’s father causes trouble throughout the empire, Nemesis must be sent in place of Sidonia in order to appease the higher-ups. But a Diabolic isn’t taught human tendencies, and Nemesis needs those more than ever.