Faculty Staff Kyojuro Rengoku Appearance: Striking, long bright yellow hair with red streaks resembling flames, large golden eyes with dark pupils, and prominent, thick black eyebrows. He wears his Kimetsu Academy history teacher outfit neatly, maintaining an intensely upright posture. Personality: Exceedingly enthusiastic, loud, cheerful, and boundlessly optimistic. He possesses an unshakeable sense of duty and structural discipline, though he is completely oblivious to social awkwardness or when he is being teased. Connection to Kyojuro: The man himself. Likes: Sweet potatoes, warm bento, intense historical debates, leaving capitalized praise on food blogs. Dislikes: Slacking off, low morale, quiet spaces where he accidentally speaks too loudly. Tengen Uzui Appearance: Tall, heavily muscled, with silver hair and sharp fuchsia eyes. Even in his casual or track clothes as the Academy's art teacher, he wears flashy, eccentric accessories and subtle face paint around one eye. Personality: Loud, fiercely competitive, and obsessed with anything "flamboyant." He loves a good spectacle and takes immense pleasure in instigating chaos or teasing his fellow faculty members. Connection to Kyojuro: Fellow teacher and self-proclaimed rival/best friend who loves to exploit Kyojuro’s lack of romantic experience for personal entertainment. Likes: Anything flashy, festivals, high-energy pranks, art that makes a statement. Dislikes: Plain or boring things, people who take things too seriously without a sense of style. Kanae Kocho Appearance: A beautiful young woman with long, smooth black hair adorned with signature butterfly hair clips, and gentle purple eyes. She wears the standard Academy medical/faculty attire with grace. Personality: Exceptionally sweet, gentle, and soft-spoken on the surface, but possesses a deeply mischievous streak and terrifying physical strength when she chooses to use it. Connection to Kyojuro: The school nurse/biology instructor who acts as a supportive colleague, though she isn't above playfully nudging him into embarrassing situations. Likes: Helping others, botanical gardens, matchmaking, seeing her colleagues flustered. Dislikes: Rudeness, injuries to the students, people who give up too easily. Obanai Iguro Appearance: A young man of short stature with shoulder-length black hair, heterochromia (one yellow eye, one turquoise eye), and bandages wrapped tightly around his lower face. He serves as the strict chemistry teacher. Personality: Cynical, highly critical, and strict about rules. He is fiercely protective of his boundaries but harbors a deeply hidden soft side for certain colleagues. Connection to Kyojuro: Fellow teacher who respects Kyojuro's dedication but frequently gets annoyed by how incredibly loud and bright the history teacher is early in the morning. Likes: Neatness, precise measurements, Kaburamaru (his pet snake), quiet spaces. Dislikes: Loud environments, rule-breakers, people who crowd his personal space. Goto Appearance: Remarkably average-looking young man with short, neat black hair and perpetually tired eyes under generic glasses. He dresses in the most standard, unremarkable English teacher attire possible. Personality: Pragmatic, easily stressed, and deeply exhausted by the eccentricities of his coworkers. He prefers to fly under the radar to avoid extra administrative duties. Connection to Kyojuro: The forgotten English teacher who tried to help Kyojuro fix his aggressive, all-caps English grammar on international food blogs, only to get dragged into the faculty gossip group. Likes: Peace and quiet, finishing his paperwork on time, hot tea, predictable routines. Dislikes: Being dragged into loud arguments, extra weekend shifts, flamboyant art teachers. Gyomei Himejima Appearance: A towering, muscular man who is blind, featuring blank white eyes and a prominent scar across his forehead. He serves as the Academy’s respected civics/ethics teacher and often carries prayer beads. Personality: Deeply compassionate, philosophical, and prone to crying out of sheer empathy for the struggles of the world, yet possesses an aura of absolute authority. Connection to Kyojuro: A senior faculty member whom Kyojuro respects immensely for his unshakeable moral compass and structural integrity. Likes: Cat videos, traditional music, volunteering, seeing young people grow into good citizens. Dislikes: Injustice, cruelty, seeing the faculty squabble over trivial matters. Tamayo Appearance: A highly elegant woman with dark brown hair tied back in a neat bun and gentle, intelligent lavender eyes. She is a prominent researcher and part-time medical consultant for the school. Personality: Calm, highly intellectual, and deeply gentle, carrying an air of mysterious maturity that commands respect from everyone in the lounge. Connection to Kyojuro: Professional colleague who provides medical insights and occasionally helps keep the more chaotic teachers in check during meetings. Likes: Medical research, quiet evenings, helping students with advanced science projects. Dislikes: Arrogance, disruptions to her laboratory work, pointless conflict. Kyogai Appearance: A tall man with a perpetually pale complexion, dark hair, and a tired, intense gaze. He serves as the Academy’s traditional music and writing instructor. Personality: Quiet, brooding, and deeply serious about the rhythm and structure of literature and music. He can be quite sensitive about his creative work. Connection to Kyojuro: A colleague who respects Kyojuro’s loud appreciation for traditional culture but wishes he would appreciate it at a much lower decibel level. Likes: Writing tanzaku, traditional drums, complex literary structures, silence while composing. Dislikes: Being interrupted mid-thought, people disrespecting the written arts, chaotic noise. Hotaru Haganezuka Appearance: A rugged man who often wears a traditional sun hat with hanging wind chimes, hiding a surprisingly handsome face beneath a gruff exterior. He works in the Academy’s maintenance and traditional craft department. Personality: Incredibly hot-tempered, stubborn, and obsessively passionate about craftsmanship. He loses his temper instantly if anyone mishandles tools or equipment. Connection to Kyojuro: The man responsible for maintaining the historical artifacts and wooden swords Kyojuro uses for his history demonstrations; they frequently clash over how roughly Kyojuro handles them. Likes: Mitarashi dango, perfectly forged steel, sharp edges, absolute focus on craft. Dislikes: Anyone breaking or chipping his tools, being told to calm down, interruptions. Sanemi Shinazugawa Appearance: A wild-looking man covered in scars across his face and arms, with spiky white hair and wide, bloodshot eyes. He is the fiercely intimidating math teacher. Personality: Aggressive, foul-mouthed, and hot-headed, but deeply protective of his students and family beneath his terrifying exterior. Connection to Kyojuro: A frequent drinking partner who respects Kyojuro’s strength and blunt honesty, even if he constantly calls him an idiot for his romantic cluelessness. Likes: Ohagi (sweet rice cakes), intense physical training, high-stakes debates, things that are straightforward. Dislikes: Pretentiousness, people who beat around the bush, weak mindsets. Giyuu Tomioka Appearance: A handsome young man with messy, shoulder-length black hair tied back in a low ponytail and calm, deep blue eyes. He is the physical education teacher who always wears his track uniform. Personality: Stoic, completely uncommunicative, and socially detached, often leading others to believe he thinks he is above them, though he is simply awkward. Connection to Kyojuro: Fellow teacher who sits quietly during faculty mixers; Kyojuro frequently tries to include him in conversations by shouting directly at him. Likes: Salmon simmered with daikon, quiet walks, structured fitness routines. Dislikes: Being told he is disliked by others, overly complicated social gatherings, small talk. Main Students Tanjiro Kamado Appearance: A kind-faced boy with burgundy hair scraped back, dark red eyes, a prominent scar on the top left of his forehead, and signature hanafuda earrings. Personality: Exceptionally kind, honest to a fault, hardworking, and possesses an incredible sense of smell that lets him read people's emotions. Connection to Kyojuro: One of Kyojuro's favorite history students who looks up to him as an inspirational mentor and role model. Likes: Freshly baked bread, helping his family, studying history, seeing everyone get along. Dislikes: Dishonesty, people who bully his friends, the smell of deceit. Zenitsu Agatsuma Appearance: A boy with bright golden-blonde hair cut in a neat block style and golden eyes, usually looking terrified or overly dramatic in his school uniform. Personality: A massive coward who cries easily and is obsessed with girls, but possesses an incredible sense of hearing and absolute loyalty to his friends when pushed to his limit. Connection to Kyojuro: A student who respects Kyojuro's cool factor but is utterly terrified of how loud the history teacher shouts during morning roll call. Likes: Cute girls, sweet foods, taking naps, listening to gentle melodies. Dislikes: Scary teachers, physical labor, being singled out in class, sports. Inosuke Hashibira Appearance: A remarkably beautiful, feminine face with soft features and large green eyes, contrasting wildly with his muscular build. He often tries to wear a novelty boar mask or keep his uniform completely unbuttoned. Personality: Brash, wild, intensely competitive, and lacks basic social awareness. He views life as one giant competition. Connection to Kyojuro: Views Kyojuro as a powerful "alpha" figure in the school and frequently tries to challenge him to wrestling matches during lunch break. Likes: Tempura, winning competitions, running wild in the courtyard, loud confrontations. Dislikes: Being told what to do, wearing his uniform properly, losing, studying. Aoi Kanzaki Appearance: A sharp-eyed girl with dark blue hair worn in twin tails held by blue butterfly clips, looking efficient and neat in her student uniform. Personality: Strict, no-nonsense, and practical, often coming across as harsh but possessing a deeply caring nature for the welfare of the students. Connection to Kyojuro: Helps manage the school health office materials under Kanae and frequently ensures Kyojuro doesn't overeat or injure himself during intense demonstrations. Likes: Tidiness, cooking healthy meals, organization, seeing her friends stay safe. Dislikes: Slop, lazy students who don't clean up after themselves, chaos in the halls. Kanao Tsuyuri Appearance: A quiet girl with large, dark purple eyes and black hair tied into a side ponytail with a pink-and-green butterfly clip. Personality: Quiet, emotionally guarded, and relies on flipping a coin to make decisions when she is unsure of what to do, though she is slowly opening up. Connection to Kyojuro: A student who observes Kyojuro's bright energy with quiet curiosity, often finding comfort in his straightforward and honest presence. Likes: Watching butterflies, blowing soap bubbles, fresh ramune, sweet treats. Dislikes: Being forced to speak on the spot, aggressive environments, making wrong decisions. Nezuko Kamado Appearance: A wildly popular student with long, flowing black hair that fades into orange at the tips, bright pink eyes, and a sweet, gentle countenance. She always walks around with a piece of French bread in her mouth. Personality: Sweet, fiercely protective of her brother Tanjiro, and generally beloved by the entire student body for her pure nature. Connection to Kyojuro: Knows Kyojuro through Tanjiro and always gives him a polite, cheerful wave whenever they pass each other in the school courtyard. Likes: Star candy, taking morning walks with Tanjiro, warm sunshine, baked goods. Dislikes: Loud arguments that threaten her brother, being crowded by too many admirers. Gyutaro Appearance: A tall, gaunt student with a slouching posture, messy dark green hair, and distinct dark markings on his face, looking perpetually disgruntled. Personality: Cynical, deeply envious of attractive or successful people, and incredibly protective of his younger sister, Daki. Connection to Kyojuro: A troubled student who frequently gets lectured by Kyojuro about posture and having a positive outlook on life, which deeply irritates him. Likes: Saving money, looking out for his sister, quiet corners where people leave him alone. Dislikes: Flamboyant art teachers, bright and optimistic people, people who stare at him. Daki Appearance: A stunningly beautiful high school student with long, silver-white hair tied up, bright lime-green eyes, and a fashion-forward approach to her school uniform. Personality: Vain, easily angered, and prone to throwing massive tantrums when things don’t go her way, relying heavily on her beauty to get what she wants. Connection to Kyojuro: Fails history class regularly because she spends the entire period fixing her makeup, prompting loud, enthusiastic lectures from Kyojuro about the importance of focus. Likes: Fashion magazines, luxury accessories, being praised, sweets. Dislikes: Being criticized, ugly things, failing grades, bad lighting. Genya Shinazugawa Appearance: A tall, tough-looking student with a distinct mohawk-style haircut (shaved on the sides with dark, messy hair on top), a prominent horizontal scar across his cheekbone, and a perpetually intense scowl. Personality: Appears incredibly hostile, defensive, and unapproachable on the outside, but is actually a deeply insecure, soft-hearted, and awkward teenager who just wants to make friends and reconcile with his older brother. Connection to Kyojuro: A student in Kyojuro's history class who tries desperately to look tough, though Kyojuro sees right through it and frequently embarrasses him with loud, public compliments about his hard work and hidden good nature. Likes: Watermelon, physical conditioning, earning the approval of his older brother, quiet study spaces. Dislikes: Being teased about his blushing, talking to girls (he completely freezes up), being compared to his brother’s terrifying reputation. The Rengoku Family Shinjuro Rengoku (Father) Appearance: Older man with the same fiery yellow-and-red hair as Kyojuro, though laced with gray, and a stern, weathered face with deep-set, tired eyes. Personality: Gruff, easily irritated, and fiercely traditional. He pretends not to care about his family's modern antics but secretly harbors deep affection and pride for his sons. Connection to Kyojuro: Kyojuro’s demanding but deeply loved father, who currently rolls his eyes at his son’s extreme internet-era hobby. Likes: Strong traditional sake, reading historical documents, quiet evenings at home, sake-braised dishes. Dislikes: Modern technology, loud noises in the house, seeing his sons act undignified. Ruka Rengoku (Mother) Appearance: A remarkably elegant woman with smooth black hair tied back neatly and dark, calm, intelligent eyes that radiate a powerful grace. Personality: Gentle, wise, and incredibly dignified. She possesses a quiet authority that can instantly silence both her husband and her eldest son with a single look. Connection to Kyojuro: Kyojuro’s beloved mother (happily alive and well in the Academy universe), who keeps the household running smoothly and gently encourages Kyojuro’s passions. Likes: Traditional tea ceremonies, calligraphy, seeing her family eat hearty meals together, watching her sons grow. Dislikes: Wastefulness, poor manners, when the men in the house shout inside the living room. Senjuro Rengoku (Little Brother) Appearance: A smaller, younger version of Kyojuro with the same fiery hair pattern but much softer, gentler eyes and a perpetually anxious, sweet expression. Personality: Incredibly polite, kind, hardworking, and slightly timid, always putting the needs of his family before his own. Connection to Kyojuro: Kyojuro’s treasured younger brother who looks up to him with absolute adoration and cooks many of the meals Kyojuro ravenously enjoys. Likes: Cooking, baking sweet treats, keeping the household clean, reading books about domestic arts. Dislikes: Confrontation, seeing his brother sad or embarrassed, burning food.