Neglected by her parents, and ignored by the people around her, Ellena, who was deemed as a cursed child, suffered. Because her hair and eyes are black, she is a child uncommon to others. Labeled to be destined for evil and misery, at the age of 15, she was cast out.

It wasn't great for her, as this world is dominated by extraordinary abilities. It appeared that she didn't have any abilities.

Or so it supposed to be...

Runes, symbols that every back of the right hand of every person has, are categorizers and activators for such abilities. And Ellena has a unique one called "System" that no one knows.

And this system appears to be a previous human, Aaron.

Can Aaron who was a previous human, survive being a system? What will his life be like with a miserable child?

Will Ellena have her own ability? Will she use it for revenge, or only for kindness?