Sound Release: Sound of Gunfire

Onton: Tsutsuoto (音遁 筒音, Sound Release: Sound of Gunfire) is a Ninjutsu which creates a single explosion of sound waves sent via the user's finger in a manner similar to an actual gunshot. These waves replicate the sound of a cannon being fired directly beside the victim's ear, which causes one's equilibrium to lose all stability. Rihan uses this technique when, and if, he has lost the opportunity to properly assassinate a target, as doing so gives him the opportunity to finish the job.