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.

That said, he is tortured by all the kids who have failed ... about this extraordinary Demon Slayer. With a gripping backstory that ties into a prominent Demon, Yoriichi casts a looming shadow ...