Webalthough kyojuro was killed by akaza, upper three, his legacy carries on. More importantly, the flame hashira ensured that akaza would flee in terror. Webkyojuro not falling into despair instead read through the instruction book of the flame breath and trained himself to become a pillar taking it upon himself to raise and help his. Webthe flame hashira, kyojuro rengoku, was killed by akaza while the wind hashira, sanemi shinazugawa, was kicked out of hell by his father and died before. Webthe flame hashira chronicles (歴 (れき) 代 (だい) 炎 (えん) 柱 (ばしら) の書 (しょ) , rekidai en bashira no sho?) is a book that chronicles the rich history of flame. Webwith season 4 of demon slayer right around the corner, here is what to expect as the show returns with the hashira training arc, which will see tanjiro and his. Webhis flame breathing imo is more focused on being as efficient as possible in maximising offensive output (one slash to seal the deal), so he has to be a quick thinker and choose. Webhowever, akaza proves to be an overwhelmingly powerful combatant for the flame hashira. Rengoku sustains fatal injuries in the ensuing battle and dies soon.