the Limitless Fortress that is a virtual reality, but all of the world of GetBackers. The world of GetBackers was essentially a "backup copy" that Brain Trust, existing in the "real world", had hoped to create using the "Archive" as a template of the world. It was through Kagami Kyoji's scientific theory, known as the "Mirror Effect", that the world of GetBackers were able to take actual form on a separate plane of existence. Sarai Kagenuma (翳沼沙羅衣 Kagenuma Sarai; Voiced by: Hideyuki Tanaka): In the manga, Sarai is a mysterious character. First appearing in book 34, he presents himself to Teshimine, claiming to know all the truths about the Limitless Fortress. He convinces Takeru that he has come to stop the Voodoo King and together, the two men journey towards Babylon City. Dressed like a monk and accompanied by a creature which looks like a snake with wings, Sarai's skills seem almost certain to revolve around magic. It is later revealed that he's a living seal, existing to contain the Voodoo King. When Kagami combined the two Himikos, the Voodoo King managed to manifest in place of Sarai. However, with the Voodoo King's defeat, Sarai was freed. Ura-Fuuchouin The Ura-Fuuchouin are the rival clan who massacred Kazuki's family to gain absolute control of the Fuuchouin String-style school. They wield taboo Black Threads as their weapons and have taken up residence in Limitless Fortress' Upper Levels. The Ura-Fuuchouin is headed by '', Kazuki's main rival as heir to the Fuuchouin School. He became its leader after the elimination of the Fuuchouin family and the exile of Kazuki to Lower Town. He is in close association — if not an actual member — with the Voodooists and the Brain Trust, allying himself with Masaki and Kagami in the liege of the mysterious Voodoo King. Also, his fighting abilities are said to be incredible, possibly even higher than that of Ban (But this comment by Kazuki was made before Ban's learning journey.). Later, it became known to Kazuki that Yohan was his younger brother. Other members of the Ura-Fuuchouin include: , the berserker brother of Yohan and Maiya who uses giant 'sword hammer' in battle rather than strings; , the only sister of Yohan and Yuuri; and a character who only appears in the manga, a childhood friend of Kazuki's from the Fuuchouin School before its fall. Saizou's clan was also killed by