Breathing Styles are swordsmanship styles that utilize Total Concentration Breathing which are practiced and taught by members of the Demon Slayer Corp, are used in combat by Demon Slayers. Demon Slayer Corp is a group that is responsible for protecting the innocent people from Demons. The list of Breathing Style are: Water, Fire, Wind, Mist, Serpent, Love, Flower, Insect, Spirit, Moon, Sun, Thunder, Sound, Stone and Beast. To become a Hashira, one must defeat 50 demons and intense training.