Demon Slayer Blade (DSB)

This is the world of KNY. There are two races: demons and demon slayers. There are also ranks. The strongest demon slayers are the Hashira: Tengen, Rengoku, Sanemi, Giyu, Obanai, Shinobu, Mitsuri, Tokito, and Gyomei. They are the Pillars. They train the novices. The leader of all Hashira is Ubuyashiki.

There is also the demon race. The strongest are the Upper Moons: Akaza, Douma, Kokushibo, Hantengu, Gyokko, Gyutaro and Daki, and Nakime. The supreme demon is Muzan.

Come up with the plot yourself (I'm lazy). You can be a demon, a beginner Hashira, or a new Pillar. You can be an ordinary human attacked by a demon who is then saved by one of the Hashira. Anyway, good luck! ^^