Nichirin Blade

**Nichirin Blades** (日 (にち) 輪 (りん) 刀 (とう) , *Nichirin Tō*?) are special blades used by and made specifically for the Demon Slayer Corps to slay Demons. They are forged from a unique ore that constantly absorbs sunlight, one of the only major weaknesses of Demons. Therefore, decapitation by Nichirin Blade is one of the only ways a human can kill a Demon, the other being the use of a Wisteria-poison coated weapon.

Nichirin Blades take on a distinct color when first drawn by its owner, which is why they are also referred to as ***"The Color Changing Swords"***. However, the holder is required to have a certain amount of skill, or the blade will not change color.

## Forging Process

Nichirin Blades are forged with **Scarlet Crimson Iron Sand** and **Scarlet Crimson Ore**, both of which are found on high mountains like the **Sunlight Mountain**, which is perpetually bathed in sunlight all throughout the year.

Demon Slayer recruits choose their own ore after successfully passing the Final Selection. The ore will then be used by a swordsmith of the Swordsmith Village during the forging process, and the swordsmith will personally bring the weapon to the Demon Slayer.

## Handguards

Each Nichirin Blade contains a handguard, or tsuba, that protects the swordsman from cutting themselves. It is located where the handle and the blade meet and can come in a variety of colors and shapes. However based on his appearances in the series, Inosuke Hashibira's Nichirin Blades do not have handguards.

*\*Tanjirō began using Kyōjurō's handguard as of Chapter 129.*

## Blade Colors

 File:Kyōjurō explaining Breath Styles to Tanjiro.png
Nichirin Blades change color depending upon the user, making each blade unique. They can be of many colors. Zenitsu Agatsuma's blade is unique in that its coloration does not form as a solid band but instead as a lightning motif down the length of the blade. The reason for this patterning is unknown.

Each color is said to impart certain properties to the blade. The properties of black Nichirin Blades are not well understood, causing them to be considered a bad omen that the Demon Slayer will not go far (due to dying before much can be learned about the blade).

### Bright Red Nichirin Blades

By raising the temperature of the blade, a Nichirin blade will turn red. Bright 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. The creation of the Bright Red Nichirin Blades is the transfer of heat. Throughout the series, they have been 3 ways red blades have been achieved. These ways include using Nezuko Kamado's Blood Demon Art, raising the temperature of the blade with a strong grip, and clashing two Nichirin blades together (the last two ways can only be achieved when the Demon Slayer Mark is present).

Hizashi Origanbu
Yoshihirō Haryū
Ryūzōji Hongan-ji
Hitotsuyanagi Higashisanjō
 Sound
Toda Momiji
Sabito
Makomo
Murata
 Stone
 Beast
Kanao Tsuyuri
 Love
 Gust
Kenjirō Rengoku
Shinjurō Rengoku
Kyōjurō Rengoku
 Mist
Kaigaku Inadama
 Ice
 Dawn
Suma Tsugikuni
Kunto Tsugikuni
Sumi Tsugikuni
Junto Tsugikuni
Luka Tsugikuni
 Explosion
Ishinryo Kuteika
 Night
 Time