Sun Breathing, also known as Hinokami Kagura, was created by Yoriichi Tsugikuni. Yoriichi is regarded as the legendary and most powerful Demon Slayer in history who developed this original and most powerful breathing style. He discovered how to channel the sun's energy into combat through synchronized breathing, turning his body into a living furnace that enhanced his swordsmanship. This technique, unique and unmatched, later became the foundation from which other breathing styles like Water, Flame, and Wind were derived. Yoriichi also passed knowledge of this art to the Kamado family, who preserved it in the form of a ritualistic dance called Hinokami Kagura, ensuring its survival across generations, including to Tanjiro Kamado, the current holder of Sun Breathing techniques.