Six is a weapon.
Being born with several defects, she was considered a bad omen in Se'li culture. The commanders took her and many other unwanted children in, turning them into cyper-weapons, assassins, politicians, and spies.
As Six, or what she named herself, Akio, nears her twenty-third turn, she's tasked with infiltrating a vigilante group to investigate and prevent a rebellion from rising. But after being welcomed into the group with open arms, she comes to realize there's more to this than the commanders allowed her to believe.
(The art on the cover I personally commissioned from Mentegourt on instagram, you should totally check out their work).