In the past, Karma entered war with the [[Spectra Union]], and at some point it developed the [[Sky Striker]] project, a transforming armor that gave its army an overwhelming advantage. In response, Spectra delegated military planning to A.I. in an effort to find a way to counter the Sky Strikers. As the technology behind them required a human operator to work, the A.I. decided that the course of action was to make Sky Striker unuseable by exterminating all of humanity with orbital weapons, even Spectra's own population.<ref name="ch1">{{chapter|ocgstoriesOCG Stories|1|ref}}</ref>Karma's own A.I.s, the Three Sages ([[Himmel]], [[Akash]], and [[Ciela]]), attempted to destroy those satellites as soon as they could, and while they succeeded – even creating so much debris that nothing could ever be put in orbit in one piece again, causing a [[wikipedia:Kessler syndrome|Kessler syndrome]] – it was too late: every human was dead.<ref name="ch4">{{chapter|ocgstoriesOCG Stories|4|ref}}</ref> Nevertheless, the war continued for centuries after that through fleets of drones.

One day, Ciela miraculously found an in-vitro embryo among some ruins, and decided alongside the others to raise it. Thus [[Raye]] was born as what would seemingly be the last human.<ref name="ch1" /> By her 13th birthday, Karma was reduced to a single town (also called by same name), comprising 5% of its former extension, the rest conquered by Spectra.<ref name="MrDucky">{{Cite tweet|user=MisterDuckyArt|number=1560975928318369792|title=Change in territory control|date=August 20, 2022|accessdate=August 17, 2023}}</ref> Despite the constant battles being fought just beyond its perimeter, Raye considered it to be a clean and beautiful town, but that day Spectra's forces managed to break through, driving her to become a Sky Striker herself and make a last stand to protect it and the androids residing with her, whom she considered her family.<ref name="ch1" /> Raye immediately made great use of the fighting skills Akash taught her by tearing through a mothership and [[Solferina]], one of the Spectra A.I.s, in a single slash each; however [[Zard]], another one of them, kidnapped Ciela to learn about Raye. Raye swore that she would take her back at all costs.<ref name="ch2">{{chapter|ocgstoriesOCG Stories|2|ref}}</ref><ref name="ch3">{{chapter|ocgstoriesOCG Stories|3|ref}}</ref>