Kyojuro Rengoku is the flame Hashira. He is always cheerful and speaks always loud. He's a comforting, funny and positive person. He don't like the Upper Moon demon Akaza. He hates donuts jokes. His quote is "Set your heart ablaze". Everytime, when he eats, does he says "Umai" or when something tasty is. Rengoku is a big brother figure and everyone likes him. He likes jokes and he's helpful. He fights against demons with his Katana. He uses flame breathing. Upper Moon 2 Doma is his demon friend.