extracted from a woman named Nollin Sonann and grafted into a mechanical body, and is the only known successful case of such experiments that produced a healthy, viable subject. When the villain Baron Muster (Nollin's vengeful brother) learned of her existence, he took her away and named her Yoko, and used her in a conspiracy plotted with Marquis Maruki Baumburg to overthrow Cydonia's ruling queen Kagura Dornburg. As a result of Muster falsifying records to state that Yoko was Kagura's daughter (and thus had a claim to Kagura's throne), Yoko was abducted by the Cydonian armed forces and forced to walk across a minefield as a means of execution. As Yoko was unable to walk because she was too young to properly control her mechanical body, a sympathetic one-eyed girl named Erica Wald volunteered to accompany her. After walking together for a hundred paces, Yoko and Erica were rescued by a group of Panzer Kunst warriors, who slaughtered the soldiers. Left in the care of a nomadic medic named Finch, Yoko and Erica were left at an orphanage in the Flammarion town of Mamiana, which was later attacked and massacred by the renegade Papagei Corps. Yoko and Erica were the only two survivors (spared only for political propaganda purposes) and were later picked up by Finch, who returned half a day late and missed the slaughter. When the canopy membrane maintaining Mars' atmosphere was ruptured by an explosion, Yoko, Erica and Finch were rescued by Baldachin Association Gärtner Mui, who demanded they sacrifice their lives to restore the pillar that supports the canopy. However Mui was then contacted by her superior, who ordered them released according to a prophecy that one (or both) of Yoko and Erica would become the chosen one that could change humanity's direction. Later Finch was contacted by a woman called Kyoko Bima, who claimed to be Yoko's long-lost mother but in reality was an agent hired by Marquis Maruki to keep Yoko under custody. Yoko spent the next year living a happy comfortable life at the Baumburg Mansion under the watch of Kyoko, who actually developed a genuine maternal bond with her. When Muster came to visit Maruki to discuss their plan, Erica, who had become Muster's apprentice, plotted for Kyoko and Yoko to run away with the help of two bounty-hunters. However, in the chase, the bounty-hunters were killed and Erica stabbed Kyoko dead