Arc was stolen from her home as a small child and sold into slavery and purchased by a powerful and wealthy lord by the name of Gilgamesh. Gilgamesh had her educated and trained to be his personal assassin. As the years passed, a dark romance between Arc and Gilgamesh began to develop until Gilgamesh threw the other lords on their heads by marrying Arc openly.

Arc has always been curious about her people, and tries to embrace what little she can remember. She paints her skin with the markings she remembers her mother wearing, and tells stories of her tribe to her children.