Kimetsu no Yaiba Wiki
Kimetsu no Yaiba Wiki

Serpent Breathing ( (へび) () (きゅう) Hebi no kokyū?) is a Breathing Style derived from Water Breathing.


Serpent Breathing is a Breathing Style that mimics serpents/snakes, specifically their slithering motions, and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms focuses on twisting and bending the sword like how a serpent slithers, the attacks are not direct and constantly meander which can ultimately strike anywhere. Users of Serpent Breathing also visualize themselves seemingly manifesting white serpents that accompany them when unleashing its techniques.

Since this technique is currently known to only be utilized by Obanai Iguro, it can only be used with a twisted blade that is similar in appearance to an Indonesian Kris Sword, with the sword's shape modeled into the bodily structure of a snake.

Breathing Style Relationship Chart


Known Users

Known Users
Obanai Iguro
Obanai Iguro

Known Techniques

Serpent Breathing has 5 known techniques and forms at minimum.

  • First Form: Winding Serpent Slash ( (いち) (かた)   () () () Ichi no kata: Idagiri?)[1] - The user moves like a slithering snake and releases several slashes in a winding pattern.
  • Second Form: Venom Fangs of the Narrow Head ( () (かた)   (きょう) () (どく) () Ni no kata: Kyōzu no Dokuga?)[2] - The user dashes behind their opponent at blinding speed and aims to swiftly slice off their head.
  • Third Form: Coil Choke ( (さん) (かた)   (とぐろ) () San no kata: Toguro Jime?)[3] - The user circles around their opponent while using their sword to slice them from all directions.
  • Fourth Form: Twin-Headed Reptile ( () (かた)   (けい) (じゃ) (そう) (せい) Shi no kata: Keija Sōsei?)[4] - The user leaps forward and performs a horizontal slash that slices through the target.
  • Fifth Form: Slithering Serpent ( () (かた)   (えん) (えん) (ちょう) () Go no kata: En'en Chōda?)[5] - The user curves their sword in multiple directions and slices their opponent, making it capable of decapitating multiple enemies at once.


— Serpent Breathing —


  1. Kimetsu no Yaiba Manga: Chapter 183 (Pages 9-10).
  2. Kimetsu no Yaiba Manga: Chapter 164 (Page 15).
  3. Kimetsu no Yaiba Manga: Chapter 190 (Page 14).
  4. Kimetsu no Yaiba Manga: Chapter 199 (Page 17).
  5. Kimetsu no Yaiba Manga: Chapter 140 (Page 11).