Webyoriichi was a member of the demon slayer corps. He wore hanafuda earrings like tanjiro and is revered as the first breath user. He was the creator of the. Webpossessing unrivaled strength and combat abilities, yoriichi was said to be 'chosen by god' and was certainly the strongest demon slayer in the series. Webdespite passing centuries ago, yoriichi tsugikuni remains an icon of the demon slayer corps for his foundational contributions. As the first breath of the sun. Webat sumiyoshi's request, he lifts her up, making her laugh and squeal with joy, causing him to break down in tears and embrace her. Suyako arrives shortly after to comfort him and. Webyoriichi tsugikuni was one of the main protagonists in the manga series known as demon slayer: Webfirst appearing in episode eight of the asakusa arc during a look at muzan kibutsuji’s past memories, yoriichi becomes a major supporting character in future arcs. Webin this paper, we look deeper into the actual extent of yoriichi's powers and take a closer look at why his abilities are as unmatched as they are, together with the. Webyoriichi tsugikuni is a legendary figure in the demon slayer universe, revered as the most powerful demon slayer in history and the founder of the demon slayer corps. Webthe most powerful breathing technique in demon slayer: Kimetsu no yaiba, the sun breathing was the creation of yoriichi tsugikuni.