What do the colors of the blades in demon slayer mean?
The indigo-gray Nichirin Blade is perfect for slaying demons, and its color represents the beast. None other than the boar-head wearing demon slayer, Inosuke Hashibira, wields not one but two indigo-gray blades. Inosuke developed the Breath of the Beast himself after living in the mountains.
What does Tanjiros sword color mean?
Both Tanjiros teacher Urokodaki and Hotaru expected the sword to take on the color red due to his burgundy tinted hair and eyes, and even declared the color to be a stroke of good luck. However, after Tanjiro wielded the blade, it turned pitch black, which was ironically considered to bring bad fortune to its user.