Moon Breathing (の Tsuki no kokyū?) is a Breathing Style derived from the Sun Breathing used by Upper Rank 1, Kokushibo, who was one of the first Demon Slayers who utilized breathing techniques.
The techique allows the user to create many "chaotic blades" when slashing that vary in length and size. It is known that Kokushibo continued to develop and add techniques to the Breathing Style over the centuries as an immortal Demon. At this point in the story, it is the only known Breathing Style to possess at least 16 different techniques, easily surpassing the other Breathing Styles.
Moves (You need clan Tsugikuni for using this breathing)
Evening Palace: This ability slashes forward with the power of Moon Breathing creating moon particles with a yellowish color
Calamitous Eddy: Upon using this ability, it will create a Moon Cyclone right ahead of where you're facing dealing continuous damage.
Moonlit Misfortune: "Moonlit Misfortune will make you do a slash somewhat like "Evening Palace" than end up splitting into 3 moons which spread out in a cone.
Dragon Ringtail: Using This Ability will make the user dash that deals damage and do v slash after dashing