After humanity triumphed over the alien force called Usurpers with battle androids known as Neans, humans settled Mars and entered an era of peace. Once their combat role was finished, the Neans were relegated to servile labor and treated as second‑tier citizens. They required a daily infusion of Nectar to survive, relying on their human masters for the drug.
Within this social order existed Proto‑Neans—autonomous, elite androids capable of deploying metallic exoskeletons that grant superhuman power. Rouge Redstar is one such Proto‑Nean, covertly serving Aletheia, the agency that regulates Neans, together with her human ally Naomi Orthmann.
Rouge and Naomi are tasked with dismantling the Immortal Nine—Proto‑Neans who pose a mysterious threat to humanity. Simultaneously, an investigator arrives on Mars to pursue a string of killings in which Rouge is the chief suspect. As they probe deeper into the hunt for the Immortal Nine, they uncover revolutionary insights about the rogue androids and their employer that challenge the very foundations of human society, spark debates about autonomy and identity.
