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Flame Breathing (Zenshuchuten).png

Flame Breathing ( (ほのお) () (きゅう) Honō no kokyū?) is one of the five main Breathing Styles directly derived from Sun Breathing.


Flame Breathing is a Breathing Style that mimics flames and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms involve extremely powerful singular strikes which 'burn' their opponents, with most attacks being initiated from a high stance. Users of Flame Breathing also visualize themselves seemingly creating and manipulating fire when unleashing its techniques.

This Breathing Style was created from one of Yoriichi Tsugikuni's students who attempted to learn Sun Breathing, but due to not being as innately powerful as Yoriichi, they were instead taught an alternated personalized Breathing Style that focused on their individual strengths and weaknesses, which eventually evolved into Flame Breathing.[1]

Breathing Style Relationship Chart


Known Users

Known Users
Shinjuro Rengoku
Kyojuro Rengoku
Mitsuri Kanroji
Shinjuro Rengoku
Kyojuro Rengoku
Mitsuri Kanroji

Known Techniques

Flame Breathing has 9 techniques in total, with six known forms. Among these, the Ninth Form: Rengoku is an esoteric art exclusive to the Rengoku family.

  • First Form: Unknowing Fire ( (いち) (かた)  不知火 (しらぬい) Ichi no kata: Shiranui?)[2] - The user charges towards their opponent at high speeds and aims to decapitate them in one slash.
  • Second Form: Rising Scorching Sun ( () (かた)   (のぼ) (えん) (てん) Ni no kata: Nobori En Ten?)[3] - The user releases an arching sword slash upwards.
  • Third Form: Blazing Universe ( (さん) (かた)   () (えん) (ばん) (しょう) San no kata: Kien Banshō?)[4] - The user swings their blade downwards in an arc.
  • Fourth Form: Blooming Flame Undulation ( () (かた)   (せい) (えん) のうねり Shi no kata: Sei En no Uneri?)[5] - The user swings their blade in a circular motion that can defend them from incoming attacks or decapitate multiple enemies at once.
  • Fifth Form: Flame Tiger ( () (かた)   (えん) () Go no kata: Enko?)[6] - The user performs a series of powerful sword slashes that seemingly takes the form of a flaming tiger.
  • Ninth Form: Rengoku ( () (かた)   (れん) (ごく) Ku no kata: Rengoku?, lit. Ninth Form: Purgatory)[7] - A devastating dashing slash that the user initiates from a high stance, the technique had enough power to carve a deep impression that burnt the ground where it was unleashed. In the movie and anime adaptation, this technique seemingly took the form of a fiery Japanese dragon that envelopes the user while charging towards the target.


Kyojuro using First Form Unknowing Fire on a Train Demon.gif
Kyojuro uses Second Form against a demon.gif
Kyojuro uses Third Form against Akaza.gif
First Form Second Form Third Form
Kyojuro uses Fourth Form against Akaza.gif
Kyojuro uses Fifth Form Flame Tiger against Akaza.gif
Kyojuro uses Ninth Form Rengoku against Akaza.gif
Fourth Form Fifth Form Ninth Form

— Flame Breathing —


  • It is implied that the reason Flame Breathing ( (ほのお) () (きゅう) Honō no kokyū?) should never be referred to as Fire Breathing ( () () (きゅう) Hi no kokyū?) is because its pronunciation is exactly the same as Sun Breathing ( () () (きゅう) Hi no kokyū?).


  1. Kimetsu no Yaiba Manga: Chapter 178 (Page 7).
  2. Kimetsu no Yaiba Manga: Chapter 54 (Page 15).
  3. Kimetsu no Yaiba Manga: Chapter 63 (Page 5).
  4. Kimetsu no Yaiba Movie: Mugen Train.
  5. Kimetsu no Yaiba Manga: Chapter 63 (Page 17).
  6. Kimetsu no Yaiba Manga: Chapter 63 (Page 21).
  7. Kimetsu no Yaiba Manga: Chapter 64 (Pages 8-9).