Bright Red Nichirin Sword (2024)

in:Abilities

English

Overview[]

Normally, Nichirin Swords can turn into virtually any color dependent on the user and their Breathing Style. However, there is one color that cannot be normally accessed: a shining bright red. Unlike other colors, a bright red sword has special properties and can only be accessed by Demon Slayers who have awakened the Demon Slayer Mark. 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.

Methods[]

The bright red hue that envelops the blade is achieved through deliberate actions intended to raise the blade's temperature, fuelling the conversion of mechanical energy into thermal energy. The following three distinct methods of activation are known:

Friction: Clashing two swords together with enough force that the friction generated between them produces a substantial heat buildup, causing both blades to illuminate in a bright red hue.^[1]^[2]^[3]
Pressure: Gripping a sword with an unwavering strength to exert immense pressure onto the metal surface. This focused pressure produces a localized heating effect, causing the blade to turn bright red.^[4]^[5]^[6]
Ignition: Engulfing a sword in flames with Nezuko Kamado's Exploding Blood to raise its temperature to an extreme level. The searing heat of the flames turns the sword bright red.^[7] This is the only method which doesn't require a Demon Slayer Mark.

Effects[]

The most notable effect of a bright red Nichirin sword is its ability to hamper or even completely nullify a demon's regeneration. The bright red Nichirin sword also generates extreme heat, which can cause immense pain to demons and cause them to cough up blood.^[8]^[9] The extent of which a bright red Nichirin sword can hinder a demon's regenerative ability can be quite apparent, as seen with the likes of Hantengu and Muzan Kibutsuji himself taking around a dozen seconds to regenerate damage that would be healed instantly under normal circ*mstances.^[10]^[11]

Bright red Nichirin swords also seem to be able to nullify the regeneration of demons that have just been decapitated, thus permanently killing them even if they managed to regrow their heads after being decapitated by a Nichirin sword. This can be inferred when Kokushibo, who had just overcome his weakness of decapitation from Nichirin swords, slowly crumbled away and was unable to regenerate despite being stabbed in a non-lethal spot by a bright red Nichirin sword.^[12]

Yoriichi Tsugikuni's bright red Nichirin sword is the most potent out of all Demon Slayers, being able to burn on a cellular level and leave scars that even the Demon King himself can't heal even after centuries.^[13] Furthermore, once slashed by Yoriichi's Nichirin sword, the cells in the affected region will be continuously burned for centuries.^[13]

Known Users[]

Known Users

Yoriichi Tsugikuni	Tanjiro Kamado	Muichiro Tokito	Gyomei Himejima

Sanemi Shinazugawa	Obanai Iguro	Giyu Tomioka

Known Usages[]

Activator	Weapon	Method of Activation
Yoriichi Tsugikuni	Yoriichi's katana	Pressure
Nezuko Kamado	Tanjiro's katana	Ignition
Muichiro Tokito	Muichiro's katana	Pressure
Gyomei Himejima and Sanemi Shinazugawa	Gyomei's flail and Sanemi's katana	Friction
Obanai Iguro	Obanai's katana	Pressure
Gyomei Himejima	Gyomei's flail and axe	Friction
Sanemi Shinazugawa and Giyu Tomioka	Sanemi's and Giyu's katana	Friction
Tanjiro Kamado and Giyu Tomioka	Tanjiro's katana	Pressure

Trivia[]

While the current accepted reading of the Japanese name of the Bright Red Nichirin Sword is Kakutō, it has also been rendered as Shakutō in the past.^[14]

References[]

↑ Kimetsu no Yaiba Manga: Chapter 175 (Page 22).
↑ Kimetsu no Yaiba Manga: Chapter 190 (Page 16).
↑ Kimetsu no Yaiba Manga: Chapter 190 (Page 19).
↑ Kimetsu no Yaiba Manga: Chapter 175 (Page 11-13).
↑ Kimetsu no Yaiba Manga: Chapter 189 (Page 18-19).
↑ Kimetsu no Yaiba Manga: Chapter 199 (Page 3-4).
↑ Kimetsu no Yaiba Manga: Chapter 112 (Page 18-19).
↑ Kimetsu no Yaiba Manga: Chapter 175 (Page 12).
↑ Kimetsu no Yaiba Manga: Chapter 199 (Page 5).
↑ Kimetsu no Yaiba Manga: Chapter 113 (Page 13).
↑ Kimetsu no Yaiba Manga: Chapter 190 (Page 13-14).
↑ Kimetsu no Yaiba Manga: Chapter 176 (Page 15-19).
↑ ^13.0 ^13.1 Kimetsu no Yaiba Manga: Chapter 194 (Page 19).
↑ Kimetsu no Yaiba Manga: Chapter 113 (Page 1).

Navigation[]

[v·e·?]

Abilities
Demon Slayers:	Demon Slayer Mark· Bright Red Nichirin Sword· Transparent World· Selfless State· Extrasensory Perception
Demons:	Blood Demon Art· Regeneration· Flesh Manipulation· Extrasensory Perception

Techniques
Breathing:	Total Concentration Breathing· Breathing Styles· Recovery Breathing· Repetitive Action· Opening Thread
Breathing Styles:	Sun Breathing· Water Breathing· Flame Breathing· Thunder Breathing· Stone Breathing· Wind Breathing· Moon Breathing· Flower Breathing· Insect Breathing· Serpent Breathing· Love Breathing· Sound Breathing· Mist Breathing· Beast Breathing

FAQs

What does a bright red Nichirin sword mean? ›

Bright 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 amount of time and is only accessible by Demon Slayers who have awakened the Demon Slayer Mark.

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What is the rarest Nichirin blade color? ›

Tanjiro Kamado wields a black Nichirin blade, but Demon Slayer's black blade meaning was initially 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.

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Who owns a bright red Nichirin sword? ›

Yoriichi Tsugikuni's and Dumisani Mavundla's bright red Nichirin swords are the most potent out of all Demon Slayers, with Yoriichi's being able to burn on a cellular level and leave scars that even the Demon King himself can't heal even after centuries.

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Was Genya a demon? ›

The actual answer is a little more complicated, but essentially no, Genya is not a demon. According to the source manga: "Genya has a special ability. For a short amount of time, he can become a demon using his bite strength and his special digestive organs."

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Did Tanjiro get Yoriichi sword? ›

Does Tanjiro have a Yoriichi sword? Well that was very interesting question and the answer is yes tanjiro have yoriichi sword, and he got the yoriichi sword after breaking the head of yoriichi type zero doll.

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Is Tanjiro Hashira level? ›

Despite not being a Hashira, he takes on Hashira-level opponents on the daily. In fact, he very often solos Hashira level threats. Halfway through the series he begins fighting demons that even outclass some of the Hashira. I'm talking of course about the Upper Moons, the six most powerful demons under Muzan's employ.

Does Tanjiro sword ever turn red? ›

By raising the temperature of the blade, a Nichirin Sword will turn shining bright red. Bright red Nichirin swords hamper the regeneration of demons and can generate extreme heat that can induce immense pain to demons.

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Was Yoriichi a Hashira? ›

He was the creator of the Breath of the Sun, which is considered the most powerful swordsmanship style in the series. Yoriichi fought against demons on his own, and his feats were legendary among the demon slayers. However, he was not part of any organized group like the Demon Slayer Corps, so he was not a Hashira.

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Why can't Nezuko talk? ›

Nezuko's silence could be a symbolic representation of her fight against her demonic instincts to consume human flesh and the sheer will power to retain her humanity. Silence can be looked at as a tool to enhance spiritual growth, inner peace and mental strength.

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Who killed Kokushibo? ›

Sanemi and Gyomei decapitated Kokushibo, but he successfully regenerated his head just as Akaza had. However, the wound from Muichiro's burning red blade caused his body to disintegrate anyway. As his body withered away, Kokushibo reflected on his human life as Michikatsu Tsugikuni, the twin brother of Yoriichi.

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How old is Tanjiro in season 1? ›

In the first chapter and episode of Demon Slayer, Tanjiro Kamado was seen as a 13-year-old. His birthday falls on July 14, and by the end of chapter 204 in the manga, he is 16. Despite losing his family in a massacre caused by a demon, Tanjiro is known for being kind, gentle, and friendly with everyone.

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How many days did Tanjiro have to survive for the final selection? ›

Candidates who manage to survive all seven nights successfully are granted the opportunity to join the esteemed ranks of the Demon Slayer Corps as official Demon Slayers. After seven days, the exam ends in the early morning and the surviving candidates gather once again near the mountaintop shrine.

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Why did Tanjiro's blade turn black? ›

It's said that when the true wielder of a Nichirin sword picks it up for the first time, its blade will change to a particular color that's suited to the individual. For Tanjiro, that meant that his blade turned black, a rare color that the swordsmith who delivered it wasn't too familiar with.

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Is Rengoku's sword bright red? ›

The sword of Kyojuro Rengoku, the Flame Hashira, is known for its nichirin blade decorated with fiery orange, yellow, and red flames, making it a symbol of powerful demon-slaying weapons.

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What does Tanjiro's red sword mean? ›

The red sword represents Flame and Kyojuro Rengoku's excentric and expansive personality translates that. The fire Breathing allows for some incredible visuals, including the Dance of the Fire God, which became one of the anime's most famous scenes yet (beware of spoilers for Season 1 in the link).

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Can Tanjiro turn his sword red without Nezuko? ›

There 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 Nichirin Swords together (the latter two only capable of being achieved when the Demon Slayer Mark is present).

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What does Zenitsu sword color mean? ›

Yellow Nichirin blade

However, his blade is painted the color yellow, which represents lightning and thunder. It reflects the fact that when needed, Zenitsu can- in a quick flash-use his lightning breathing style to wreak absolute havoc and change the tide of battles through his quick-witted and sharp personality.