Rinkaichū

The user could enable their hand or body to insert poisonous nano-sized bug in the opponent's body which creates a painful and mostly fatal injury. These insects are transferred in to the victim's body with a mere touch of the skin. Although from the Aburame Clan this is apparently even secret among them. Madara Uchiha claims Shikuro Aburame has the anidote for the jutsu which Torune seems to also have.