Sound Release: Sound of a Bell

Onton: Shousei (音遁 鐘声, Sound Release: Sound of a Bell) is a more powerful and instantaneous form of Chouon used to send a single sound wave into the target's heart. When this is done, a sound akin to a thunderclap is heard, and the victim's heart is affected in such a manner that they would die of what seems to be a massive heart attack. Executing the technique requires utmost skill and knowledge of the human heart, as being even a millimeter off or using too much or too little Chakra could result in the assassination either failing or causing convulsions of blood in the victim, who would otherwise seem to have died of natural causes. A successful execution however, has this technique labeled as a flawless assassination technique.