Kyojuro Rengoku (煉れん獄ごく 杏きょう寿じゅ郎ろう, Rengoku Kyōjurō?) is a Demon Slayer of the Demon Slayer Corps and the Flame Hashira (炎えん柱ばしら, En Bashira?). Kyojuro is greatly enthusiastic in regard to his duties as a Hashira, and often came across as cheerfully eccentric. He is honorable warrior who adhered to his code of morals and principles that was instilled into him by his mother at a young age; the most significant being his belief that those who were born strong have a duty to protect the weak.