Respira

Respira (死の息吹, Breath of Death) is a miasma release technique utilized by Ryūku Sōga. First the user will weave the tiger handseal, and thick, smoke-like dark colored miasma will surround the area. The dark miasma will decay and rot anything it comes in contact with, except the user. Under it, structures will break as well as skin and bone along with concrete and wood. Once exposed to this deadly gas, the bone and skin will break off and spread throughout the body and slowly break it down and eventually kill the infected body. The technique can spread, if it is touched or exposed to any type of solid object it will break down and dissolve that object. The techniques range can be from short-long and the speed can be controlled. The technique however is quite reckless and can infect anyone in the vicinity, including comrades. Once infected, there are no way for medical ninjutsu to heal it due to the strong yin chakra that spreads throughout the body, meaning that the virus is almost impossible to get rid of, requiring the medical ninjutsu prowess of someone of Tsunade, Sakura or Katsuyu's caliber to even stop for a peroid of time.