Kaidan Nomura has revealed an exceptional proficiency in utilizing these weapons, as he is able to control the flow of his chakra to such a degree that he can choose exactly when the summoning technique will occur. Due to this, he has commissioned the creation of dozens upon dozens of these weapons, and litters his battlefields with them so that he may summon as many bats as possible. Aside from Kaidan, only a few shinobi in the world have possession of these weapons, those being his students and a single Kage from the Land of Valleys.