Related
Summary
fan ofDemon Slayerare familiar with the Nichirin blade , and most probably know that these swords occur in a motley of coloration . What they ’re less probable to know , however , is exactly what these people of colour intend , and what the colors say about their wielders .
InDemon Slayer , a Nichirin swordis a special character of katana that absorbs sunlight and is crafted from materials know as Scarlet Crimson Iron Sand and Scarlet Ore , fictitious substances that give the swords their color - change power . It ’s suppose that when the rightful wielder of a Nichirin sword picks it up for the first time , its steel will change to a finical color that ’s suited to the individual .
For Tanjiro , that meant that his blade turned smutty , a rarefied people of color that the swordsmith who delivered it was n’t too familiar with . Black blades were say to be ill-omened , but that was a superstition that arose from their curiosity .

Nichirin Come in Many Colors, But Black is Strongest
The Black Nichirin Blade is Tied to the Strongest Breathing Style
A Nichirin sword ’s color actually has some link to whatBreathing Stylethat devil slayeris most skillful at . Blades associated with Water Breathing typically switch to a dispirited colour , for example , while that of a user of the Flame Breathing proficiency would turn red . Continuing down the list of elements , Thunder Breathing is yellow , Stone Breathing is gray , and Wind Breathing is greenish . These five cover the overpowering bulk of Nichirin blades have sex to exist since these are the most common styles .
Blade Color
Elemental Style

naughty
Water
scarlet

Fire
Yellow
Thunder

grey
Harlan Fisk Stone
Green

Wind
shameful
Sun

However , there are some characters who have differentiate even further , such asShinobu Kocho , the Insect Hashira , whose personal style is technically a subset of Water Breathing . As such , her sword is a light-colored purple or lavender in colour – still near to water ’s blue , but decided , just like her style . Tanjiro ’s black - colored blade is secretly relate with the Sun Breathing proficiency , the progenitor style from which all Breathing Styles are derived .
Nichirin Swords Vary in More Ways than Color
Nichirin Swords Don’t Necessarily Look Like Katanas
Nichirin swords do n’t have to be substantial in color , either . SeveralDemon Slayercharacters have blade that bear unique patternsor markings on them , which seem to also be study part of the color - shift property . For example , Zenitsu ’s sword does n’t turn sensationalistic inDemon Slayer , but alternatively sports a branching lightning bolt - esque mark that takes on that icteric coloration rather . The exact reason for this is never made clear , but since the color still align , it ’s not a major problem .
Several fiber are also in possession of weapons that do n’t qualify as katanas , particularly amongDemon Slayer’spowerful Hashira . Mitsuri Kanroji maintain a dark pink , lash - like steel , for instance , while Shinobu ’s is more like a tuck , to good befit her poison - based fighting style . snaky blades , massive paired chopper , and an axe on a strand are also used by some demon slayers . Genya even maintain a scattergun that fire " Nichirin shells , " slug made of the same material as the brand themselves .
Which Characters Have What Color of Nichirin Sword?
Nichirin Swords Come in Many Other Colors
EveryDemon Slayercharacter who wield a Nichirin sword has a color associate with them that ordinate with their respiration style . Many characters have unique colour not listed above , as a result of their specialisation in a highly specific ventilation style . Tengen Uzui ’s Nichirin leaf blade , for exercise , have an orange - ish colour , align with his practicing of the Sound Breathing style , which he is the only practitioner of . Kanao Tsuyuri has a short pink Nichirin sword , as a result of her specialization in Flower Breathing . It ’s not clear if these weapons deepen color as a issue of their user ’s training , or if they were always an unusual people of color .
Of of course , having a canonical color of Nichirin blade is also utterly acceptable , and unique colour do n’t necessarily indicate a special strength . Kyojuro Rengokuwielded a red Nichirin brand , align with his Flame external respiration , while Giyu Tomioka wielded a dark blue sword that aligned with his Water Breathing . It ’s entirely possible to strive the top social station of the Demon Slayer Corps using one of the five basic coloring material , as these Hashira demonstrate .
Nichirin swords will also change color when held by different the great unwashed . The brand which Tanjiro and Tokito discovered in the Yoriichi Type Zero , for illustration , did n’t turn sky gentle like Tokito ’s sword when he held it , but rather a dull grey color , aligning with Stone Breathing . The same sword , when held by Tanjiro , was black . While it ’s not often that characters hold swords other than their own inDemon Slayer , this would seem to indicate that the blade can be quite unlike from one another in how they react .

What Makes Nichirin Swords Dangerous To Demons?
Nichirin Swords Wield the Power of the Sun
Nichirin brand are n’t made of ordinary metal like other swords are . alternatively , they ’re made up of two fabled ingredient : Scarlet Crimson Iron Sand and Scarlet Ore. Both of these subject matter are said to be collected from high atop hatful , where they ’re able to soak up abundant vitality from the Sunday , imbuing them with their fiend - slaying properties . Since daimon are weak to sun , these materials charged with sunlight are the sodding sum to create a weapon to fight against them with .
These cloth also give the blade their iconic color - change properties , suggesting that there may be a more mystical constituent to their use as well . Since blades are read not to respond unless the person who cast it has a certain level of skill , the sword must be pass judgment its user somehow . Nichirin swords are further altered when a slayer reaches the rank of Hashira , at which time an lettering is inscribe upon the sword reading " Destroyer of Demons , " a tradition going back hundred of year .
The color of one ’s Nichirin steel can have a massive impact on their career inDemon Slayer , and it ’s always interesting to see what color blade each character ends up with .

watch out on Crunchyroll
Cast




