When a Ketsuryūgan-wielder makes direct skin contact with a target, they can infuse some of their chakra into the target. The said chakra becomes poisonous to the target, making their bodies unstable. Should the target then begin to bleed, the chakra will be set off, causing the victim's body to become consumed in a pitch-black substance before inflating in a grotesque manner and finally exploding on a large and on a very destructive scale. Only by rendering the target unconscious (such as with genjutsu) will nullify the explosion. With proper medical aid, the poisonous chakra can be extracted, saving the victim completely.