This ore is called Scarlet Crimson Ore, and the swords are also made from Scarlet Iron Sand. Therefore the Nichirin swords in Demon Slayer are infused with sunlight which is the biggest weakness that every demon possesses.
So while Tanjiro has an inherent weakness in his black blade, it could also become his greatest strength if Tanjiro can not only master Water but the Flame element as well. There's a precedent, so that also means there's a roadmap to follow should Tanjiro decide to pursue the Flame element more.
In that case, since Tanjiro uses the exceedingly rare Dance of the Fire God, i.e., the Sun Breathing style, which is the origin of all other styles, it makes sense for his sword to take on the color black. It is believed that once a Nichirin sword takes on a color, it never changes again.
When Haganezuka sees Tanjiro's reddish hair, he becomes hopeful that he will get to see a bright red Nichirin sword. However, once Tanjiro unsheathes his weapon, the blade turns a dark black, to the concern of Urokodaki and the anger of Haganezuka.
Why Everyone is AFRAID of Tanjiro! The Secret Behind Tanjiro's Black Nichirin Sword and Earrings
Is Tanjiro not a chosen Sun wielder?
He claims that Tanjiro still has access to a great power as those with marks like Tanjiro's are the ones chosen by the Sun Breathing style. Tanjiro brushes this off because he wasn't born with this mark but instead got it due to a burning accident years before and an injury during the initial entrance exam.
One practical reason for Tanjiro's head being so hard is the lifestyle he and the Kamado family were shown to live in early Demon Slayer. Being a mountain-dwelling family for several generations, the Kamado family would progressively get stronger from their harsh environment.
Will Tanjiro Learn Sun Breathing? As mentioned by Tanjiro in the first episode of the Entertainment District Arc, he knows how to perform Hinokami Kagura. However, he is still far away from mastering the technique in the anime. Well, in the manga, does master the Sun Breathing style.
It was originally a scar that he had in an accident when he saved his brother from a falling brazier. In Tanjiro's journey to being the strongest Demon Slayer of all, his scar transforms into becoming a Demon Slayer mark which is fitting his Sun Breathing technique.
1) Gyomei. Gyomei Himejima is the strongest Hashira in Demon Slayer. This fact has been established in the manga as Tanjiro, Inosuke and Zenitsu all agree that he is the strongest member of the Demon Slayer Corps.
Immense Speed & Reflexes: Tanjiro possesses superhuman speed and reaction time, being able to travel faster than the eye can see and even move faster than Sabito, an extremely skilled sword master who was able to easily move faster than Tanjiro can process.
Of course, the one who takes the top spot in terms of the best swords in Demon Slayer is Tanjiro's black Nichirin blade. Although Tanjiro started out as a Water Breathing user, his Nichirin sword turned black instead of blue, and that surprised him because black swords are said to indicate bad luck.
He is the fastest Hashira, and the second physically strongest. Obviously, then, Tengen Uzui is rather proud. He is demanding, fussy, boastful, and prone to selfishness. But he is also ultimately kind and caring, with great love for his three wives as well as the other Hashira.
Nezuko is undoubtedly a strong demon in Demon Slayer and she proved her strength repeatedly. One situation that really displayed her true potential was the fight against Daki. She underwent a transformation and thoroughly overwhelmed the Upper Moon 6 demon.
Most of them have actually removed the post about Demon slayer season 3 officially cancelled. However, it is still up on the Instagram page from where all the misinformation started. The post says, due to multiple reports of being too violent, Ufotable studio cancelled the production of Demon Slayer season 3.
Equipment. Standard Nichirin Katana: Kyojuro carried a standard sized and shaped katana made from scarlet ore that is a deep shade of reddish-orange in color with the words Destroyer of Demons ( 惡 あっ 鬼 き 滅 めっ 殺 さつ , Akki Messatsu?) engraved on the side.