Hebi (蛇, ? lit. Snake) is a terrorist organization that Alphard leads. Hebi, in a joint venture with the CIA, created the Ua virus, which means flower of death in Swahili. It is a biological weapon of mass-destruction that kills its victims within twelve hours, causing parts of their bodies to bleed. The use of the virus in a bio-terrorist attack in Shibuya forms the background of 428: Fūsasareta Shibuya de. Oosawa Kenji develops an anti-virus.