Moon Breathing

Moon Breathing (の) is a Breathing Style derived from Sun Breathing.

Overview
Moon Breathing is a Breathing Style that mimics the moon and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms are standard yet varied swordsmanship techniques that focus on swift and powerful strikes that always follow the shape and pattern of a crescent moon.

It has been revealed that, like all of the other original Breathing Styles, the Moon Breathing also branched out of the Sun Breathing. When its creator, Michikatsu Tsugikuni, attempted to learn Sun Breathing from his twin brother, Yoriichi Tsugikuni, he discovered he was unable to master it and so was instead trained in an alternate Breathing Style which later became Moon Breathing.

This Breathing Style is only used by Upper Rank One, Kokushibo, who was one of the first Demon Slayers who utilized Total Concentration Breathing. When he became a demon, he improved this Breathing Style using his Blood Demon Art, which he used to create dozens of tangible crescent moons from his sword, each of them as sharp as blades, making this Breathing Style one of, if not the, most powerful and deadly ones showcased thus far.

Known Techniques
As Kokushibo lived for centuries continuously improving his swordsmanship through his Moon Breathing Breathing Style, eventually developing 16 different techniques at least by the time of the Infinity Castle Arc.

Note: Due to Kokushibo's Blood Demon Art, it is unknown how a human swordsman will perform these techniques. Furthermore, several techniques were performed with Kokushibo's longer sword.


 * First Form: Dark Moon, Evening Palace (ノ　・の) - Kokushibo quickly draws his sword and slashes swiftly in a singular horizontal motion in a crescent shape, creating numerous chaotic crescent blades. This technique is extremely reminiscent of Iaijutsu.


 * Second Form: Pearl Flower Moongazing (の　ノ) - Kokushibo performs several crescent-shaped slashes that defend him from incoming attacks, sending a barrage of crescent blades.


 * Third Form: Loathsome Moon, Chains (ノ　・り) - Kokushibo swings his sword rapidly in two gigantic crescent slashes, from which a storm of smaller crescents spread, causing huge destruction in a small area.


 * Fifth Form: Moon Spirit Calamitous Eddy (ノ) - Kokushibo makes multiple curved slashes layered over one another, creating a rising vortex of sword slashes and crescent moon blades.


 * Sixth Form: Perpetual Night, Lonely Moon - Incessant (ノ　・) - Kokushibo releases a wild barrage of crescent-shaped slashes several meters in front of him. This technique was powerful enough to overwhelm Sanemi Shinazugawa and so long-ranged that it slices up the surrounding pillars.


 * Seventh Form: Mirror of Misfortune, Moonlit (ノ　・え) - Kokushibo swings the gigantic version of his sword in a powerful frontal crescent-shaped slash that creates powerful multi-directional long-ranged slashes in the ground.


 * Eighth Form: Moon-Dragon Ringtail (ノ) - Kokushibo uses the gigantic version of his sword and creates a singular gigantic crescent-shaped slash that slowly decreases in size, creating dozens of crescent moon blades.


 * Ninth Form: Waning Moonswaths (ノ　り・) - Kokushibo creates a stream of long-ranged crescent-shaped vertical and horizontal slashes along with numerous crescent moon blades with the gigantic version of his sword.


 * Tenth Form: Drilling Slashes, Moon Through Bamboo Leaves (ノ　・) - Kokushibo creates a long-ranged triple-layered slash twister full of crescent moon blades with the gigantic version of his sword.


 * Fourteenth Form: Catastrophe, Tenman Crescent Moon (ノ　・) - Kokushibo uses the gigantic version of his sword and creates a chaotic vortex of powerful extremely long-ranged omni-directional slashes that destroys whatever is caught up within its attack radius.


 * Sixteenth Form: Moonbow, Half Moon (ノ　・れ) - Kokushibo creates a barrage of downward crescent slashes from an extremely long and wide range, resulting in a powerful six-fold slash crashing down on his opponents; the attack itself is powerful enough to create several miniature craters where the slashes have landed.