In the world of Demon Slayer, characters are defined by their strength, resolve, and will to protect humanity. One name keeps recurring: Yoriichi Tsugikuni.

Demon Slayer features Yoriichi Tsugikuni, a legendary figure. He was the first Demon Slayer from the Sengoku Era. Yoriichi created the Sun Breathing style. Tanjiro Kamado is his descendant.