Webthe sun breathing technique is more commonly known as the breath of the sun and is the core concept behind yoriichi's power. It is the most powerful and versatile. Webhe wore hanafuda earrings like tanjiro and is revered as the first breath user. He was the creator of the legendary sun breathing style, the style which other. Webon further prying, it was revealed that yoriichi had developed a preliminary form of breathing style, which he put to practice. But he could not stand the feeling of hitting. Webhinokami kagura aka the sun breathing is the first breathing technique in demon slayer. It was developed by yoriichi tsugikuni, the first demon slayer to ever. Weball other subsequent styles were derived from yoriichi’s breathing style. He used sun breathing styles to defeat demons. Other breathing techniques include:. Webdespite his prodigious abilities, yoriichi still trained rigorously to hone his skills. He developed an entirely new breath style derived from his observation of the.