Demon Parasitic Destruction Technique - a killing-oriented ninjutsu that Ukon or Sakon can only use after activating the second level of the cursed seal. Using chakra, he splits his own body at the cellular and protein level and penetrates the target's body. Once inside, Ukon begins to recover, seizing certain parts of the victim's body and gradually eroding the host's cells. In the end, the target dies - this is precisely the main purpose of the technique.
The only way to stop the technique is to attack one's own body, inflicting the same damage on the intruder. Ordinary victims are not prepared to do such a thing, so the technique is considered extremely successful. Kiba Inuzuka became an exception: he seriously wounded himself, causing the same harm to Ukon, and tried to kill himself, forcing Ukon to leave his body so as not to die along with him.