katana kimetsu no yaiba

Yoriichi Tsugikuni (継 (つぎ) 国 (くに) 縁 (より) 壱 (いち) , Tsugikuni Yoriichi?) is a major recurring character in Demon Slayer: Kimetsu no Yaiba. shinobi no ittoki manga He is a Demon Slayer who lived nearly 500 years ago during the Sengoku era He was the most powerful Demon Slayer to have ever existed He is also the inventor of Breathing Styles, being the one who created the first ever Breathing