The Hashira (柱はしら Hashira?, lit. Pillars) are the highest-ranking Demon Slayers in the Demon Slayer Corps. The Hashira, in accordance with their great strength, hold the highest authority in the organization, second only to the Corps leader, Kagaya Ubuyashiki, and later, Kiriya Ubuyashiki. Each Hashira are masters of a unique Breathing Style, some of which are even created by themselves. Interestingly, swordsmen who can use the Flame Breathing and Water Breathing have become Hashira in every era