In the Demon Slayer manga and anime series, the breathing style that is believed to have the power to defeat Muzan Kibutsuji is the Sun Breath Technique. This technique is derived from the original Breath of the Sun style and is said to be the only technique capable of truly destroying Muzan. It is practiced by the Hashira, or elite members of the Demon Slayer Corps, who have trained extensively to harness its power.
