Kokushibyou

'Kokushibyō (黒死病, Black Death) is a technique only usable by Ryūku Sōga. The technique can be activated in only one way. The only way to infect the target with this attack is whenRyūku uses his infectious Miasma that will enter the targets body through a hole such as the nose or mouth, in some occasions a wound. Once infected, the target will gain a serious fever, one on a caliber that the target has surely not felt before. Dark Ring shaped marks will constantly break out on their neck, arms, and legs. They also will begin to start throwing up and wheezing their bodies energy out. It will keep continuing until they are unable to fight, and will fall out and die altogether.