A goddess, who loved humanity, granted magic to help them progress. However, when they formed peaceful kingdoms, she grew unhappy and cursed the land. The curse caused monsters to become stronger and more aggressive during the Blood Moon, a night that occurs every 20 years.

During the first Blood Moon, children were born with extraordinary abilities, known as Blood Children. These children were taken and used as weapons by various kingdoms to avoid the curse. However, the curse continued, and another Blood Moon occurred.

A powerful Blood Child, who specialized in necromancy, rose in the northwest and attempted to conquer the continent of Oqia. Five great kingdoms united to stop him: Thedia, Yatis, Laedegon, Kerus, and Grumore. After initial failures, the kingdoms united and waged an all-out war against the necromancer.

Five heroes emerged and carried out a nighttime ambush, defeating the necromancer. The team, known as "Styx," became legends. After the battle, the kingdoms decided to dispose of Blood Children to maintain peace.

That night, my mother told me the story and emphasized the importance of honor. I admired the heroes' determination and aspired to be like them. Although the necromancer name was forgotten through history the devastation he caused remained.

Now a young man will begin his life's adventure...