In the Demon Slayer series, the Hashiras are the highest-ranking combatants. They are the most elite and powerful warriors in the organisation. Each is vital to their fight against Muzan Kibutsuji’s Demons and the Twelve Kizuki. All Demons are sensitive to light and can be easily destroyed when exposed to sunlight. They can, however, be killed with Nichirin Blades, special swords used by Demon Slayers.
The steel used to make the swords used by Hashira members to kill demons is known as a Nichirin blade. According to the Demon Slayer anime/manga, the blade is made of scarlet crimson iron sand and scarlet crimson ore collected from the mountains. Nichirin Swords change colour depending on who is wielding them and their personality, giving each blade a unique appearance. Demon Slayer mentions over 12 different Nichirin-blade colours, each with their own set of abilities.
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10. Indigo-Gray Nichirin Sword

Wielder: Inosuke Hashibira
Symbolism: Beast
Type: Standard Nichirin Katana
Colour: Indigo-Gray
When Inosuke (Boar-Headed Slayer) receives his twin blades, they turn indigo-grey. This colour represents the beast, and Inosuke invented the Beast Breathing technique. He carved numerous gashes into his blade. Rather than being clean-cut like other Nichirin katanas, these gashes cause tearing in the body. He could only advance in the Breath of The Beast after living in the mountains. The Breath of Wind technique is responsible for Inosuke’s unrivalled breathing style. It improves his sense of touch and trace.
9. Pink Nichirin Sword

Wielder: Mitsuri Kanroji
Symbolism: Love
Type: Whip Nichirin Katana
Colour: Dark Pink
This dark pink Nichirin sword is extremely heavy and requires extreme physical flexibility to wield. Mitsuri Kanroji is the ideal welder for this pink sword of love. This sword is also useful for long-distance combat. In the hands of a skilled user, it can be lethal. She is flexible and agile, and her muscles are eight times thicker than normal, allowing her to have physical strength superior to average humans without losing speed.
She was able to repel Hantengu while also taking substantial damage. She is not, however, one of the most powerful Hashiras in the series. Mitsuri has a distinct swordsmanship style that revolves around her thin and flexible Nichirin Sword, which resembles a whip sword. Her swordsmanship allowed her to quickly subdue the enemies summoned by Upper-Rank Five, Gyokko, slicing them up at speeds faster than they could respond accurately.
8. Yellow Nichirin Sword

Wielder: Zenitsu Agatsuma
Symbolism: Thunder
Type: Standard Nichirin Katana
Colour: Yellow
Zenitsu Agatsuma’s yellow Nichirin Blade represents thunder. Zenitsu may have low self-esteem and appear to be a coward. Nonetheless, when the situation calls for it, he unleashes his true power with lightning speed. Zenitsu’s true power is revealed only when he passes out from fear. Yellow Nichirin Swords are associated with one of the main breathing techniques, Thunder Breathing. Those who practise it are seen with them. With only the first form of the Thunder Breathing technique mastered, Zenitsu creates variations and modifications to improve his skill and swordsmanship. His blade is adorned with lightning streaks that run the length of it and is sheathed in a simple black sheath. The yellow sword increases Zenitsu’s speed when combined with his breathing technique.
7. Amber Nichirin Sword

Wielder: Tengen Uzui
Symbolism: Sound
Type: Dual Nichirin Cleavers
Colour: Amber
Tengen is a Corps Hashira Demon Slayer and one of the organization’s most powerful and skilled swordsmen. Tengen, unlike the majority of Demon Slayers, prefers a dual-wielding swordsmanship style with his Nichirin Cleavers, employing a nunchucks-Esque sword-wielding style. During his battle with Gyutaro, Tengen demonstrates his exceptional swordsmanship skills. Tengen developed his own breathing technique. Tengen’s enhanced hearing, Musical Score technique, shinobi expertise, dual Nichirin cleavers, and anti-demon bombs are all combined in Sound Breathing. His swords are extremely powerful, and no one has ever survived a blow from them until Tengen’s fight with Upper Rank 6. His blades are inscribed with the words “Destroyer of Demons.”
6. Gray Nichirin Spiked Flail and Axe

Wielder: Gyomei Himejima
Symbolism: Stone
Type: Nichirin Spiked Flail And Axe
Colour: Gray
Two things happen when a demon slayer’s sword turns grey. The first is that they will almost certainly be able to master Stone Breathing. The second distinction is that they will not be employing a traditional Nichirin blade. Gyomei Himejima wields a large chained axe in the case of Stone Hashira. Stone Breathing imitates the earth and stone in order to achieve consistency and unwavering defensive and offensive abilities. It is a technical and challenging style to master.
After being born blind, Gyomei learned to sharpen his other senses, giving him a much larger, more powerful, and one-of-a-kind connection to the earth than many others. Gyomei wields a hand axe with a spiked flail attached by a long chain to the hilt. He uses the sound of the chain to judge the position of the flail and axe to wield his one-of-a-kind weapon, masking and even exploiting his blindness.
5. Lavender Nichirin Sword

Wielder: Obanai Iguro
Symbolism: Serpent
Type: Twisted Nichirin Katana
Colour: Lavender
Lavender blades are associated with and represent the Serpent breathing style. The Serpent Hashira, Obanai Iguro, is the most well-known wielder of a lavender sword. Serpent Breathing is a subset of Water Breathing. Obanai’s sword can slither and bend like a snake, resulting in unpredictable attacks that can slash through tiny gaps. Obanai is a skilled swordsman because he can master such a delicate technique. Indeed, his skills enabled him to compete with Muzan Kibutsuji.
4. Green Nichirin Sword

Wielder: Sanemi Shinazugawa
Symbolism: Wind
Type: Standard Nichirin Katana
Colour: Green
When a demon slayer’s sword turns olive green, they usually learn Wind Breathing. The Wind Hashira, Sanemi Shinazugawa, is the most well-known demon slayer who wields this sword colour. He can summon tornadoes of sword slashes with his sword on any demon unfortunate enough to face him. Sanemi Shinazugawa is a brawny fighter on a mission to exterminate all demons on the planet. He fights brutally, and any demon who gets in his way will be met with a cyclone of rage.
3. Red Nichirin Sword

Wielder: Rengoku Kyojuro
Symbolism: Flame
Type: Standard Nichirin Katana
Colour: Red
Kyojuro Rengoku wields the red Nichirin blade, symbolising fire, and is also known as “Flame Hashira,” a charismatic and wonderfully strange character. Kyojuro has a strong moral compass, and his desire to slay demons burns brightly. The fiery Flame Pillar is delightfully eccentric and frequently cheerful. He has no doubt that he is a man of strong moral values, and his desire to slay demons is as intense as a raging flame. The main and only special ability of bright red blades is to impede or even nullify demons’ regenerative and healing abilities, which mimic the sun’s effect on them.
2. Purple Nichirin Sword

Wielder: Kokushibo (Michikatsu Tsukiguni)
Symbolism: Moon
Type: Fleshy & Demonically Modified Katana
Colour: Purple
The purple blade represents the Moon, the polar opposite of Tanjirou’s sword (Tanjiro’s Black Nichirin sword represents the Sun). The Moon Breathing is a more advanced version of the Sun Breathing made possible by the use of some mysterious techniques. Not by chance, this is the sword wielded by Kokushibo, one of the series’ main antagonists.
Kokushibo was the Twelve Demon Moons’ strongest swordsman and the second strongest demon after Muzan Kibitsuji. He fought numerous demon slayers as a hundred-year-old demon. He accumulated a wealth of battlefield knowledge and experience. Only Muzan Kibutsuji, the Demon King, possesses a more powerful regenerative ability than Kokushibo. He regenerates faster than Akaza and Doma, regrowing his ear and right shoulder with ease.
1. Black Nichrin Sword

Wielder: Tanjiro Kamado
Symbolism: Sun
Type: Standard Nichirin Katana
Colour: Black
The Black Nichirin Sword is one of the most elusive and mysterious Sun-representing blades. Tanjiro Kamado wields this rare black Nichirin blade, and his weapon, like all others, is one-of-a-kind. Black Nichirin swords, it turns out, are extremely rare, and the symbolism behind them is almost unknown. Tanjiro’s black Nichirin blade turned red when he used his Sun Breathing style against Muzan, allowing him to resist the Demon King’s enhanced regeneration. Tanjito has an advantage in battle due to his ability to use Sun Breathing. It enables him to stand out among the incredibly powerful Hashira he battles.
So here conclude the list of Top 10 Most Powerful Swords. The above ranking on my opinion your ranking can be different from mine. So comment box is open for your opinion write your views on comment box so other people can know your ranking of the sword and tell us why.