Rengoku ☆

Kyojuro Rengoku (煉れん獄ごく 杏きょう寿じゅ郎ろう Rengoku Kyōjurō?) was a major supporting character of Demon Slayer: Kimetsu no Yaiba and a major character in the Mugen Train Arc. He was a Demon Slayer of the Demon Slayer Corps and the late Flame Hashira (炎えん柱ばしら En Bashira?). Appearance: Kyojuro was a young adult of tall stature and lean-muscular build. He had long bright yellow hair with red streaks akin to flames along with two shoulder-length bangs and two chin-length bangs on the side of his head, black forked eyebrows, and golden eyes that fade to red with white pupils. He was known to be charismatic and had an air of great optimism, having an enthusiastic smile plastered on his face nearly all the time. Kyojuro wore a paler brown version of the regular Demon Slayer uniform, which consisted of a brown gakuran jacket, a white belt around his waist and tattsuke-hakama pants. Over this, he wore a haori with a white-yellow gradient pattern and red flame-like ridges at the end that his father Shinjuro had once worn and more than likely his father had worn when they were the Flame Hashira respectively. Finally, he wore red kyahan with yellow flames erupting from the bottom-up, with pale brown tabi socks and a pair of white zōri with red straps. When he first joined the Demon Slayer Corps, he only wore the regular Demon Slayer uniform but as he rose up the ranks, Kyojuro started wearing a completely white haori before donning on his signature flame-patterned one.

Kyojuro was greatly enthusiastic in regard to his duties as a Hashira, and often came across as cheerfully eccentric. He was amiable, pure of heart, and boasted extraordinary technique and swordsmanship stemming from strict practice and discipline. He was an 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. Kyojuro also loved his family immensely, displaying great respect and worry towards his father, Shinjuro Rengoku, despite him growing slowly more aggressive and apathetic towards Kyojuro. He was incredibly encouraging and optimistic towards his little brother, Senjuro Rengoku, believing in him and wishing him the best no matter what. This was further accentuated during his death where his final words for his father and his little brother were "take care of your body" and "follow your dreams no matter what". Kyojuro also believed that if someone lacks immense skill, their hard work towards their dreams and desire to help people doesn't count for nothing.

Beneath his enthusiastic demeanor, Kyojuro was very logical and tactically intelligent, acting quickly and precisely in battle, especially when the lives of others are on the line. Kyojuro was also great in seeing talent in others, even in Nezuko Kamado, a demon which he wanted to kill beforehand, after seeing her risk her lives to fight and protect others. Though he was extremely optimistic, Kyojuro did sometimes have a sense of foreboding that those he believed in might die, especially his friends who he cared deeply for. He, like most Demon Slayers, absolutely detested demons, usually because of their heinous deeds or because of their clashing moral values. Despite this, Kyojuro recognized and accepted Nezuko as a member of the Demon Slayer Corps after seeing her risk her life to protect innocents, showing that Kyojuro was capable of not letting his hatred for demons cloud his judgement. Abilities: Overall Abilities: As a Hashira of the Demon Slayer Corps, Kyojuro was a very powerful and skilled combatant. Before he took his father's place, Kyojuro was already shown to be an amazing fighter. He successfully avenged the death of the 9 Demon Slayers that died to the Flute Demon by himself and later managed to singlehandedly defeat Lower Rank Two, Hairo, who even appraised his swordsmanship before he died. Moreover, his father, Shinjuro Rengoku, stated that, after he stopped teaching his son, Kyojuro trained himself to become a Hashira by learning from the guide book of the Flame Breathing style, a book which only had three volumes.

Physical Abilities Kyojuro running along a train track Kyojuro running on a train track at immense speeds. Immense Speed & Reflexes: As a Hashira, Kyojuro possessed tremendous speed and reflexes, so much so that even gifted Demon Slayers like Tanjiro and Inosuke Hashibira were unable to register his clash with Akaza, with the latter stating that he was on a different dimension. Kyojuro could even cause tremors to the ground and nearly launching a train off its tracks by running at such high speeds. Moreover, Kyojuro could easily move at speeds much faster than the eye can see, decapitating demons before they can even react. His reflexes were so fast that he managed to cut Akaza's arm moments before the Upper Rank was going to hit Tanjiro. Kyojuro also managed to keep up with Akaza's high-speed techniques and incredibly swift movements, which he remarks is faster than the blink of an eye, sometimes even managing to out-speed him. This surprised and impressed Akaza himself, who openly expressed his amazement over Kyojuro's skill. Kyojuro standing up despite Hairo's attacks Kyojuro persisting despite suffering numerous injuries from gunshots and explosions. Immense Stamina & Endurance: Kyojuro displayed superhuman stamina and endurance during his battles over the course of the series. In his battle with the Flute Demon, Kyojuro ruptured his eardrums, yet didn't flinch in the slightest, ignoring the pain and continuing to fight and win. In his battle with Hairo, he suffered dozens of severe wounds and injuries from gunshots and explosions coming from the former Lower Rank Two but continued to stall enough time for all the bombs he planted to be disarmed without showing any signs of pain or fatigue, which shocked Hairo into questioning whether the person he met in the past was really the same person he was fighting now.

Supernatural Abilities: Extrasensory Perception: Kyojuro had incredibly honed senses, such as when he was able to sense and perceive Akaza's immense presence and demon aura. Kyojuro was also capable of sensing demonic presences faster and more accurately than Tanjiro Kamado, who harbors an acute sense of smell, when he detected two demons right after another on a train before anyone else noticed. This ability also allowed him to precisely gauge the regenerative abilities and weaknesses of most demons, like Enmu. Kyojuro was also able to perceive Tanjiro's injuries and torn blood vessel accurately, which allowed him to teach him how to plug up that wound and prevent him from dying of blood loss. Furthermore, he was able to detect malice in Enmu's spells and prevented himself from getting incapacitated. Standard Nichirin Katana: Kyojuro carried a standard sized and shaped Nichirin katana with a red flame-like pattern along with the words Destroyer of Demons (惡あっ鬼き滅めっ殺さつ Akki Messatsu?) engraved on the side of the blade. The handle of the katana is wrapped in cords of white silk. The tsuba of Kyojuro's katana is shaped like a flame with a red core and orange border. He also carried a standard sword sheath that was white and grey in color.

Techniques: First Form: Unknowing Fire (壱一ノ型kata 白果油?) - The user charges towards their target at high speeds and unleashes a singular slash that aims to decapitate them. Second Form: Rising Scorching Sun (Ni no kata: Nobori En Ten?) - The user releases an arching sword slash upwards. Third Form: Blazing Universe (三ノ型: 気き炎全万番象翔) - The user swings their blade downwards in an arc. Fourth Form: Blooming Flame Undulation (Shi no kata: Sei En no Uneri?) - The user swings their blade in a circular motion that is used to defend from incoming attacks or slash multiple targets in one swoop. Fifth Form: Flame Tiger (Go no kata: Enko?)[28] - The user performs a series of powerful sword slashes that seemingly takes the form of a flaming tiger. Standard Nichirin Katana: Kyojuro carried a standard sized and shaped Nichirin katana with a red flame-like pattern along with the words Destroyer of Demons (惡ああ鬼滅めっ殺さつ Akki Messatsu?) engraved on the side of the blade. The handle of the katana is wrapped in cords of white silk. The tsuba of Kyojuro's katana is shaped like a flame with a red core and orange border. He also carried a standard sword sheath that was white and grey in color.