Webgray nichirin swords are associated with stone breathing, which is why gyomei himejima’s nichirin chained flail and axe are associated with that color. Webbright red nichirin sword (赫 (かく) 刀 (とう) kakutō?, viz. Bright red blade) refers to the ability that turns a nichirin sword bright red with special properties for a certain. Webzenitsu agatsuma, a vital member in tanjiro’s clique, possesses the yellow sword, which connects with his breath of the thunder style and the explosive,. Webnichirin blades, aka nichirin swords, are forged from scarlet crimson sand and scarlet crimson ore, both found on mt yoko. These blades are specifically made for. Webin demon slayer, a nichirin sword is a special type of katana that absorbs sunlight and is crafted from materials known as scarlet crimson iron sand and scarlet. Webeach color of the nichirin blades represents a different element or inspiration, as well as the personality and power of the demon slayer wielding it. Webthe yellow nichirin blade that zenitsu agatsuma uses is a sign of thunder. His use of the technique “breath of the thunder”. Webzenitsu uses a standard sword, not too dissimilar from tanjiro’s in design. It has a silver base with a yellow lightning strike traveling through the blade‘s length. Webthere are only 3 known methods to turn a nichirin sword bright red: Using nezuko 's blood demon art, raising the temperature of the blade with a strong grip, and clashing two.