Red Nichirin blades hamper the regeneration of demons and in some cases even burn them on a cellular level leaving wounds that are unable to heal. By raising the temperature of the blade, a Nichirin blade will turn red.
It involves covering a Nichirin Sword with Nezuko Kamado's Exploding Blood to raise its temperature to the point it turns bright red.
Black is the most mysterious color of all the blades, and is held by the main character, Tanjiro. It is a rare blade and represents the sun; it also holds a theory that the demon slayers who own this sword are not to live a long life.
Why Do The Swords Take On Different Colors? Nichirin blades are also referred to as “Color Changing Swords” and the reason for this is that the blades adopt a distinct color when they're first drawn by their Demon Slayer owner.
Moreover, any Nichirin sword can become bright red regardless of the blade's original color. However, the blade can only stay bright red for a certain amount of time before returning to normal.
Tanjiro Kamado wields a black Nichirin blade, but the symbolism of such a sword is unknown. Black blades are seen as a rarity, as demon slayers who wield them are doomed to die young. No wielder of a black sword has ever become a Hashira, either. However, this is all superstition.
Gyomei's Gray Flail and Axe
Undoubtedly the strongest of all of the Hashira in terms of pure strength and power, Gyomei uses weapons that are also very unique.
His gung ho style of combat paired with his move sets could be the reason why the mangaka chose to give Inosuke two blades . Fans also believe that he received his swords by winning them in a fighting contest against another demon slayer who had entered the mountain he lived in.
When 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 demons via decapitation because the mountain where the metal is mined is constantly drenched in sunlight, the fatal weakness of all demons.
Tanjiro certainly did a lot of good with his Water Breathing techniques, but his ability to use Sun Breathing both gives him an edge in battle and allows him to stand out among the incredibly powerful Hashira he fights alongside.
In the case of Tanjiro, the mark used to be just a graze, but during his fight with the Hand Demon during the Final Selection, the mark changed. That life threatening condition altered him and afterwards, it develops into a flame-like pattern and is his new Demon Slayer Mark.
Tanjiro Is Strong, and Stronger than Zenitsu as he uses Sun Breathing.
When Tanjiro first got his Nichirin Sword on Demon Slayer, and it changed color to match the personality of its user like all Nichirin weapons do, many fans were surprised that Tanjiro's katana turned black. Here was a gentle and self-sacrificing orphan who only picked up the sword in order to save people from demons.
Bright Red Blade ( 赫 がく 刀 とう , Gakutō?) is the one hundred and thirteenth chapter of Koyoharu Gotoge's Kimetsu no Yaiba.
It was Yoriichi's sword, he found it inside Yoriichi Type Zero doll when he destroy the head. And then hotaru took the sword to fix it. Tanjiro also use Kyojuro's tsuba in this sword.
8/10 Tanjiro Inherits Rengoku's Fiery Sword Hilt
The Mugen Train arc was recently animated into Demon Slayer: Kimetsu no Yaiba the Movie: Mugen Train, but the manga wraps this arc up by showing Rengoku's father gift Tanjiro his son's flame hilt.
Fans have wondered why Tanjiro is the only user with a black blade in Demon Slayer. Later, in the manga, it is revealed that Yoriichi too wielded a black Nichirin blade. The only two users who could perform techniques from the breath of the sun had black Nichirin blades.
Derived from the Water Breathing, the light pink Nachirin blade represents the Flower, and it is used by Kanao Tsuyuri and Kanae Koucho the sister demon slayers who developed their own shared Breathing.
This is unsurprising, as Tengen's sound breathing was based on thunder breathing to begin with. They are also shaped more like cleavers than traditional katana, and feature a single large hole in each blade, possibly to allow Tengen to hook unto enemy's weapons or bodies.
Inosuke Hashibira, a half-demon among demon slayers.
Yes they use the color changing nichirin. As you can see Tanjiro use blue nichirin sword in here.
Amethyst Purple Nichirin Blade ( 紫 むらさ き 日 にち 輪 りん 刀 とう , Murasaki Nichirin Tō?) is a special technique that can only be accessed by users of the Demon Slayer Mark and Breath of the Starry Dusk.
Standard Nichirin Katana: As a Demon Slayer, Yoriichi carries around a standard sized and shaped Nichirin katana that is deep black in color, but changes bright red during combat.