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

Breathing Style Relationship Chart



  • First Form: Winding Serpent Slash ( (いち) (かた) () () () Ichi no kata: Idagiri?)[1] - Obanai rotates and releases a circular slash in front of him.
  • Second Form: Venom Fangs of the Narrow Head ( () (かた) (きょう) () (どく) () Ni no kata: Kyōzu no Dokuga ?)[2] - Obanai goes behind his opponent at blinding speed and lops off their head.
  • Third Form: Coil Choke ( (さん) (かた) (とぐろ) () San no kata: Toguro Jime?)[3] - Obanai curves his sword like a slithering snake and quickly decapitates his opponent.
  • Fourth Form: Twin-Headed Reptile ( () (かた) (けい) (じゃ) (そう) (せい) Shi no kata: Keija Sōsei?)[4] - Obanai 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] - Obanai using his bending sword, curves it right to left at incredible speeds. This technique is capable of decapitating multiple targets at once.


Obanai colored profile
Obanai Iguro


— 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).

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