His katana's hilt is circular shaped with 4 slight indentations, with a black center and a golden border. Yoriichi's katana also has the words Slay ( 滅 めつ , Metsu?) engraved on the side.
Yoriichi is the greatest swordsman to have ever lived and the first person ever to be able to turn his Nichirin Sword into a bright red color as he was born with the mark that presumably gave users the ability to turn their blade bright red.
After being cut by Tanjiro, the head from Yoriichi Type Zero tumbles down only to reveal a 300 year-old katana hidden within its body.
Their namesake contains the kanji for "sun" ( 日 にち , nichi?), "ring" ( 輪 りん , rin?), which could translate to either "sun ring" or its most common meaning, "solar." In addition to the kanji for "sword/blade" ( 刀 とう , tō?), the full translation to the Nichirin Sword is "solar blade."
It was Yoriichi's sword, he found it inside Yoriichi Type Zero doll when he destroy the head. And then hotaru took the sword to fix it. Tanjiro also use Kyojuro's tsuba in this sword. He found the sword on Volume 12.
This color was first discovered by Yoriichi Tsugikuni when he became a Demon Slayer due to his Sun Breathing. In fact, it is a category of Yoriichi's gifted powers and abilities, which is meant to hamper the regeneration of Demons.
When Tanjiro first got his Nichirin Sword on Demon Slayer, and it changed color to match the personality of its user like all Nichirin weapons do, many fans were surprised that Tanjiro's katana turned black.
His blades are engraved with the phrase Destroyer of Demons ( 惡 あっ 鬼 き 滅 めっ 殺 さつ , Akki Messatsu?).
Who forged Yoriichi sword? Yoriichi Type Zero ( 緑 より 壱 いち 零 ぜろ 式 しき , Yoriichi Zeroshiki?) is a Battle Doll constructed by Kotetsu's ancestors during the Sengoku Era.
Black Nichirin Blade
The most mysterious sword color from Demon Slayer is the one Kanjiro wields. The black blade represents the Sun and is surrounded by prejudice and misconceptions, as historically every demon slayer who held it lived a short life.
Michikatsu, who snuck around behind their father's back to see his brother, pitied Yoriichi, who was thought to be deaf until he was seven and clung to his mother's side whenever Michikatsu saw her. At some point, he gave Yoriichi a flute he made as a gift.
But if we are talking about the human form, then it's a big fat NO, because Tanjiro has just mastered the Sun Breathing whereas Yoriichi is the inventor of it, also he's way more powerful and holds an unfathomable battle intellect, larger than any Demon Slayer in history, so in conclusion, no one is remotely close to ...
In the Anime
Tanjiro's ancestor was a good friend of Yoriichi and arguably was one of his only true friends. Therefore Yoriichi gave the earrings as a gift, and since then they have been passed down the generations until they reached Tanjiro.
Yoriichi Type Zero's appearance largely resembles Yoriichi Tsugikuni, the person it was modeled after. It has six arms and hands that each hold a katana, due to the fact that two arms weren't enough to come even close to replicating Yoriichi's movements.
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.
Inosuke's Indigo Dual Swords. One of the most unique swords in the entire Demon Slayer anime is Inosuke's indigo dual swords. He wields each sword in his hand and uses the trademark Beast Breathing technique to use them in a crude but very effective manner.
Yoriichi is a master swordsman who wields a red-black Nichirin blade, a katana style blade made of scarlet ore and engraved with the words "destroyer of demons".
2) Kokushibo
Kokushibo is the only other survivor apart from Muzan. This Upper Moon 1 went up against Yoriichi and managed to make it out alive. He gave everything he had but still managed to receive a heavy slash. Just before he received the second cut, Yoriichi died when he attempted to recover from the first move.
Hotaru demonstrated his professionalism and expertise when he polished and sharpened the 300-year-old blade left in Yoriichi Type Zero while completely ignoring the wounds he received from Gyokko.
As a Hashira, Muichiro's katana has the words Destroy Demons engraved on the blade. His sword's tsuba is rectangular with hollowed rectangles at each corner accentuated by the green of the tsuka.
The engravings on Shinobu's sword reads "evil demon" (悪鬼, akki) on the right side of the blade, and "destroy/kill" (滅殺, messatsu) on the left side of the blade.
Background of Sanemi's Sword
Sanemi is a master swordsman who wields a green Nichirin blade, a katana style blade made of scarlet ore and engraved with the words "destroyer of demons".
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.
Standard Nichirin Katana: As a Demon Slayer, Yoriichi carries around a standard sized and shaped Nichirin katana that is deep black in color, but changes bright red during combat.
It is possible for a swordsman to use more than one Breathing Style technique at a time, allowing the user to take advantage of the advantageous aspects of both techniques. Tanjiro Kamado, for example, can use both the Water Breathing and Sun Breathing styles simultaneously.