The Purple Nichirin sword was used by the Upper-Moon One, Kokushibo. This sword is symbolic of the Moon Breathing style and is definitely one of the strongest within the series. Being a demon ...

Sun Breathing is considered the most powerful, with Moon Breathing being exclusive ... It's an unusual style in that Inosuke uses two Nichirin Swords, which most demon slayers don't have access ...

Humans can only depend on well-trained Demon Slayers. With Nichirin swords and special breathing techniques, these Slayers face their demon opponents with unparalleled strength, skill, and ...