Sun Breathing is the first ever Breathing Style
It mimic the sun and replicate it with the user's movements, techniques, and abilities. All techniques and forms are extremely varied and have no set pattern, making it the most versatile and effective against demons. Users of Sun Breathing visualize themselves seemingly manipulating solar flames when unleashing its techniques.
Weapon: Nichirin Sword
Color: Red
Demon Slayer Mark:
User: Tanjiro Kamado
Forms: 13
First Form: Dance - The user performs a singular downwards vertical slash in an arcing motion.
Cross Slash-The user ignites their sword with solar flames and releases two arching flame slashes to their opponent, each individually making an "X" shaped slice.
Flash - A modified version of Dance. The user combines the fundamental technique of Thunder Breathing with the high-powered slash of Dance by inhaling huge amounts of oxygen, increasing the pumping of blood through the entire body, focusing it on the legs, and releasing it all to assault the target with a slash.