Demon Slayer, also named "Kimetsu no Yaiba" in his Japanese name, is one of the most popular anime of the decade. It has been published in the Weekly Shōnen Jump for the first time in 2016. Then, it has been release as an anime in May 2020.
In this anime, we are following the story of Tanjiro, a young man who lose her entire family during a mass murder when he was looking for wood to make a fire. During this sad event, his young sister (named Nezuko), have been transformed into a demon.
When Tanjiro came back home, he saw the tragedy, he was alone, left with a half human sister. Tanjiro was close to die when his sister jumped of him to kill him because she was a demon, but he met Giyuu Tamioka, one of the rising star of the Demon Slayer world.
The main goal of Tanjiro is to find the murder of his family to give back her human appearance to his sister.
To achieve this goal, Tanjiro will train hard to fight every demon that he can meet. In his quest, he will meet Sakonji Urokodaki, a man with a golden heart who will train him and give him a sword.
After his hard training, he will meet two friends, Inosuke and Zenitsu, two young man who want to be stronger to achieve their goal like him.
The Tanjiro sword have been given at the end of his training with Urokodaki. This sword is called "Black Nichirin", it is an insanely well-made back and red sword which will help Tanjiro in his quest.
Tanjiro will break this sword during a fight against an overpowered demon with Inosuke.
Inosuke is kind of a burned head, he doesn't think before act. Unlike others Demon Slayer, Inosuke use two swords that he modified to ripped of the skins of demon. His two swords are heavily enameled by his care, which also made the blacksmith mad, who had to rebuild his two blades after a fight where they were broken.
Both of his sword are 100% made of metal, there is no wooden handle. The handle of both swords are just a leather band. It is probably the most rustic swords of the anime.
Zenitsu is a protagonist of Demon Slayer, this young man isn't like others' demon slayers. Unlike the others, he has very serious learning difficulties, that leads to a huge loss of self-confidence. Zenitsu is very strong, but he is scared of everything. He only knows one skill, which is the third thunder breathing.
The Zenitsu's sword is very classy. It is a white and golden sword with a long metallic blade with a deeply engrave yellow thunder strike along the blade.