Sephirah Genomics is a company that developed Void Genomes and only 3 of them successfully. Possibly the first one, it was injected into Shu Ouma. Another one, it was injected into Yuu. The last one, it was injected into Shu Ouma, too, which gave him a advantage to extract his own Void. This company developed Void Genomes from the knowledge that Kurosu Ouma has collected/gathered about a way to control the Apocalypse Virus.