Demon Slayer characters use Katana

Kokushibo is a villainous character in the Japanese manga demon slayer and its spin-offs. Born as Tsugikuni Michikatsu, the eldest son of a samurai family during the Warring States period, he followed his younger brother Tsugikuni Yoriichi to join the Kisatsutai as one of the first generation of Breathing Swordsmen.

Muichiro uses the Nichirin Sword, a katana whose features include a golden square-shaped tsuba interspersed with hollowed-out squares in the corners, a swastika, a swastika tattoo meaning good luck, and a mint-green "悪鬼滅殺" engraved on the blade.

Hashibira Inosuke is the only double sword flow in the demon slayer, but the Nichirin sword he initially used was stolen from the other team members, simply two swords with no tsuba or hilt, only cloth wrapped around the hilt, and screamed that it could "slice like a fine silk"!

The katana used by Mitsuri is a special Nichirin sword, which is made with the best forging techniques of the Forge Sword Village, and is thin, light, and as soft as a whip, allowing it to cut and slice through enemies quickly, and it can also shrink freely, and there is no limit to how far it can shrink yet.

The katana Shinobu uses is called a Nichirin sword, this Nichirin sword has a very special appearance, similar to a thin sword, but more like an inverted handkerchief, with a long, short, and serrated shape, and when viewed from the front, the tsuba looks like a butterfly with its wings spread out.

Yoriichi uses the Breath of the Sun, so his Nichirin katana is made up of black and red, and the red Nichirin katana is only the strongest because the Breath of the Sun is the source of all the Breaths, and when Yoriichi uses the Breath of the Sun to empower the Nichirin katana, the blade will turn a blood red color.