Kyoketsusei

Kyoketsusei (虚血性の, Ischemic Disease) is a technique only usable by Ryūku Sōga. When it is used, the air will appear to spiral in the direction of the target. In that air, many cellular viruses will be spread into the target through a hole. Depending on the users preference, the virus will be controlled and one of the targets organs will not get any blood or oxygen. Furthermore, the virus will block the organ from getting oxygen or blood completely, rendering it useless. This can be even more deadly than it already is when the organ is something such as the heart or lungs, especially when the lungs are unable to get oxygen.