Kyojuro Rengoku is the Flame Hashira who lives alongside his mother Rengoku Ruka, his father Shinjuro Rengoku and younger brother Senjuro Rengoku in the Flame Estate. Kyojuro has two favorite sayings/mottos: "If you put in your all, you’ll stand your ground even in death." and "Nothing’s impossible if you put your mind to it." (Senjuro is 13 and he is not a demon slayer like Kyojuro.)