Kimetsu no Yaiba Wikia
Kimetsu no Yaiba Wikia

Sound Breathing ( (おと) () (きゅう) Oto no kokyū?) is a Breathing Style derived from Thunder Breathing.


Sound Breathing is a Breathing Style that mimics sound, specifically its disorientating loudness, and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms utilize an object that creates huge amounts of sounds and uses that as a powerful attacks and effective confusion to close in, as well as extremely fast movements similar to how fast sound travels as well as make use of the user's sense of hearing. Users that have mastered Sound Breathing visualize themselves seemingly creating and manipulating sound when unleashing its techniques.

The only known user, Tengen Uzui uses a battle strategy called a "Score", which involves Tengen using his incredible hearing reading his opponents movements and deconstructing them into sound by analyzing the rhythm of their movements. Through this, he is able to take advantage of their openings to much greater effect by striking in a way similar to making the beat to a song. His combat style focuses on generating huge amounts of sound to overwhelm his opponents. In conjunction with this, he uses small but powerful anti-demon bombs made with a special gunpowder that are capable of overpowering an Upper Rank Demon briefly, and uses his sound abilities to make sure there is no collateral damage on humans when throwing them out of his line of sight.

Since this combat style can only be used by Tengen, it can only be used with a specific set of weaponry, which is two larger-than-normal Nichirin Katanas, which each have a notch in the sharp ends of their blades and are held together at the hilt by a metal chain. His swords are said to have large amounts of explosive power, and it is stated that, until Tengen's fight with Upper Rank Six, no one had ever survived a blow from them.

Breathing Style Relationship Chart


Known Users

Known Users
Tengen Uzui
Tengen Uzui

Known Techniques

Sound Breathing has 5 techniques and forms at minimum, with 3 known techniques.

  • First Form: Roar ( (いち) (かた) (とどろき) Ichi no kata: Todoroki?)[1] - The user lifts their twin swords above their head and slams them down with great force whilst simultaneously creating an explosion with his bombs to deal massive physical damage, causing a loud sound resembling thunder as a result
  • Fourth Form: Constant Resounding Slashes ( () (かた) (きょう) (ざん) () (けん) Shi no kata: Kyōzan Muken?)[2] - The user holds their swords apart and spins them rapidly in conjunction with releasing his bombs, creating massive explosions while defending themselves from attacks.
  • Fifth Form: String Performance ( () (かた) (めい) (げん) (そう) (そう) Go no kata: Meigen Sōsō?)[3] - The user holds one of their swords with a reverse grip and spins the other using the chain that connects them. They couple this by also releasing numerous bombs to detonate, causing great explosions that deal massive physical damage.


— Sound Breathing —


  1. Kimetsu no Yaiba Manga: Chapter 77 (Pages 7-8).
  2. Kimetsu no Yaiba Manga: Chapter 90 (Pages 6-7).
  3. Kimetsu no Yaiba Manga: Chapter 89 (Page 8).