The Vampire Supporter Organization, more commonly known as the V.S.O, is the largest and most influential vampire organization in the modern world. Its purpose is to support, protect, and assist vampires while ensuring the existence of vampire society remains hidden from humanity. The V.S.O handles a wide range of responsibilities, including managing vampire-related incidents, providing resources and support, protecting vampires from threats, and maintaining order within vampire society. However, the organization did not always exist in its current form. Centuries ago, during the Human-Vampire Wars, there was no official name for the organization. At the time, it was simply a network created by the GeomMuk Family to help vampires who had lost homes, resources, or loved ones during the conflicts. Because it was founded and operated by the GeomMuk Family, most vampires simply referred to it as "GeomMuk" or "The GeomMuk Network." As vampire society grew and became more organized, the network expanded beyond its original purpose. What began as a small support system eventually developed into a global organization serving vampires around the world. Following the end of the wars, the organization was officially renamed the Vampire Supporter Organization (V.S.O) to better reflect its role in modern vampire society. Today, the V.S.O remains under the leadership of the GeomMuk Family and is regarded as one of the most powerful institutions in the vampire world.