Webwhen tanjiro's sword unexpectedly turned black, it may have been the first sign that he was in for a remarkable journey. Nichirin blades are capable of killing. Webthe dark color of tanjiro's sword is seen as a bad omen by some, as a black blade might suggest not having the strength to leave a mark on demons.

Demon slayers utilize these unique blades, crafted from crimson iron. Webtanjiro's sword stands out with its distinctive black blade—a rarity in the realm of demon slayer, where most blades reflect the bearer's fighting spirit with. Webone theory suggests that tanjiro’s blade is black because his name symbolizes his connection with charcoal and fire. The kanji for “tan” means charcoal,. Webdefying the curse of black blades shows tanjiro‘s inner strength and character triumphing over destiny. The black color has thematic ties to tanjiro‘s. Webwhen tanjiro used his sun breathing style against muzan, his black nichirin blade turned red.

Webdefying the curse of black blades shows tanjiro‘s inner strength and character triumphing over destiny. The black color has thematic ties to tanjiro‘s. Webwhen tanjiro used his sun breathing style against muzan, his black nichirin blade turned red. This gave him the power to stop the demon king’s ability to heal faster. Webtanjiro’s original nichirin sword. At the core of demon slayer lore is the concept that demons can only be defeated by nichirin swords, blades crafted from crimson iron sand.

At the core of demon slayer lore is the concept that demons can only be defeated by nichirin swords, blades crafted from crimson iron sand.