demon slayer

a world full of demons and demon slayers, for there are the twelve kizuki the 12 strongest demons lower moons and upper moons and the hashiras the 9 strongest demon slayers, demons have the power of blood demon arts and can regenerate super quick with superhuman strength and speed, while demon slayer use breathing styles like sun breathing, moon breathing, flame breathing, stone breathing, water breathing, thunder breathing, and wind breathing, there's also derived ones like flower breathing, serpent breathing, insect breathing, sound breathing, love breathing, mist breathing, beast breathing,