Thunder Breathing

Thunder Breathing (の) is one of the five main Breathing Styles directly derived from the Sun Breathing. The Thunder Breathing combat style mimics swift strikes and movements of lightning and electricity and infuses it with the users swordsmanship. This combat style is very reminiscent of the real life sword style know as Iaijutsu.

It has been remarked by Zenitsu that this combat style focuses on channeling strength into the user's legs, and maximizing the output of every single muscle and blood vessel in them.

It was created from one of Yoriichi Tsugikuni's students who attempted to learn the Sun Breathing, but due to not being as innately powerful as Yoriichi, they were instead taught an alternated breathing style that focused on their individual strengths and weaknesses, which eventually evolved into the Thunder Breathing.

The primary cultivator for the Demon Slayer Corps was Jigoro Kuwajima.

Techniques
There are a total of six original forms that can be used with the Thunder Breathing with the First Form said to be the foundation for the rest of them. However, Zenitsu Agatsuma developed a seventh form in order to stand on equal ground with Kaigaku, his former senior disciple under Jigoro who had become the Upper Rank 6 of the Twelve Kizuki, replacing Daki and Gyutaro. It is also noted


 * 1) First Form: Thunderclap and Flash (ノ) - The user dashes forward and slashes at their opponent with incredible speed. Zenitsu has honed this ability to the extent of being able to repeat the dash multiple times in quick succession.
 * 2) * Six Fold - A compilation of the First Form with a series of six dashes. Primarily used by Zenitsu.
 * 3) * Eight Fold - Zenitsu dashes eight times within one use of this technique.
 * 4) * God Speed - Further augments the speed of Thunderclap and Flash.
 * 5) Second Form: Rice Spirit/Lightning Ball (ノ) - The swordsman is able to generate five straight attacks around the user in a single moment.
 * 6) Third Form: Thunder Swarm/Buzzing Mosquito Thunder (ノ) - Generates a spinning wave that strikes all directions of the foe.
 * 7) Fourth Form: Distant Thunder (ノ) - The user releases multiple ranged strikes towards a target.
 * 8) Fifth Form: Heat Lightning (ノ) - A single, focused, slashing attack.
 * 9) Sixth Form: Rumble and Flash/Electric Lightning Shower (ノ) - A series of strong ranged attacks released around the user.
 * 10) Seventh Form: Flaming Thunder God  (ノ)  - This is the seventh form that Zenitsu created himself. The user creates a dragon-like creature emitting fire and thunder. This form alongside God Speed allows Zenitsu to move extremely fast, allowing him to defeat Upper Rank 6, Kaigaku. Before Kaigaku died, Zenitsu confessed that this form was unique to himself and that he had created it in hopes of fighting alongside him as an equal.

Demonstrations

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Trivia

 * This Breathing Style is very similar to the real-life fighting style of Iaijutsu.
 * The First Form: Thunderclap and Flash is stated to be the basis for the other forms, which was all Zenitsu could learn and hone, while Kaigaku couldn't despite learning the other forms after it. Two unnamed Demon Slayers said that he wouldn't be able to master the others much.