
継国緑壱
Йоріічі Цуґікуні
Yoriichi Tsugikuni is the progenitor of Sun Breathing and one of the most important figures in the history of the Demon Slayer Corps. Operating during the Sengoku Era, his combat abilities fundamentally shaped the trajectory of the series. While his era has long since ended, his mastery of the original breathing style remains a foundation for the fight against demons.