Muzan isn't afraid of much, but something about Sun Breathing makes his skin crawl. What's so special about it?

Demon Slayer also sets itself apart with its unflinching depictions of family bonds set against a dark fantasy backdrop.

This breathing style is later shown to be used by the most powerful Demon Slayer in history, Yoriichi. Tanjiro also carries a piece of Yoriichi wherever he goes in his Hanafuda earrings.

He was the older twin brother of the legendary Demon Slayer Yoriichi Tsugikuni. Yoriichi himself has shown that he can single-handedly kill Muzan in an encounter between the two. The only reason ...