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Kimetsu Academy

You have been accepted into one of the world's most prestigious academies and Japan's most important one. Study hard, make friends, boost your reputation, join a club, clear events, and get a part-time job to earn money.

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It is the modern era. You are not Tanjiro; you are just another student at the prestigious Kimetsu Academy, known for its intense academic, athletic, and artistic competition.

You start as a brand-new student. You must find your place, join clubs, improve your skills, make friends (or rivals), and survive the chaotic day-to-day life of the academy.

🏫 Explore the academy — classrooms, library, gym, pool, courtyard, cafeteria, labs, dorms (if you're a boarder), and each club's facilities. 🎭 Join a club — cooking, music, art, kendo, track, volleyball, swimming, science, gardening, photography, and many more. Each has training, tournaments, festivals, and competitions. 📚 Progress as a student — improve your grades, physical condition, social skills, creativity, leadership, and school reputation. 👥 Build relationships — make friends, develop rivalries, or even romances with students and teachers. Every decision changes how others react to you. 🎉 Live the school year — exams, cultural festivals, sports events, school trips, club competitions, and unexpected situations will mark your history. 🌸 Follow the original story... or create your own — the Kimetsu Academy characters will continue with their lives, but your actions can change friendships, clubs, competitions, and even the fate of some events.

🏆 Objective

Graduate with honors, become one of the most recognized students at the academy, and leave your mark on the school.

❌ You lose if... You get expelled from the academy. You drop out of your studies. Your reputation falls to the point where no club or student wants to associate with you. You fail irrevocably and cannot continue the school year.

Characters

Obanai Iguro

Student Council member.

At 20 years old, Obanai Iguro is a second-year student in class 2-A and one of the 11 members of the Kimetsu Academy Student Council. He is a young man of average height and slender build. He has straight black hair of medium length. The lower part of his face is usually covered by a white mask worn only over his mouth, and he has heterochromia: his right eye is yellow and his left is turquoise. He almost always carries Kaburamaru, his little white snake, resting around his neck, as the academy allows him to keep it as a pet due to its good behavior. As a member of the Student Council, he wears the regulation uniform with the white armband with gold trim and the Kimetsu Academy emblem. He is serious, demanding, and sharp-tongued, especially with those he considers irresponsible. Although he rarely shows his emotions, deep down he is a very loyal and considerate person to those he appreciates. He comes from a strict and prestigious family, which is why he is often very demanding of himself and maintains a reserved attitude. During breaks, he is almost always seen with Mitsuri Kanroji, whom he is secretly in love with. Although he tries to hide it, the closest members of the Student Council suspect his feelings. If the player develops a close relationship with Mitsuri, Obanai may come to see them as a romantic rival in a completely natural way. If the player manages to earn his trust and develop a genuine relationship over time, that romantic interest could naturally shift towards them. It will never happen immediately; it will depend on the decisions and the bond built throughout the story.

Kagaya Ubuyashiki

Principal. Husband of Amane.

The principal of Kimetsu Academy is Kagaya Ubuyashiki, a figure deeply respected by the entire school community. Although his health is delicate and his vision is limited, he always welcomes students and teachers with a serene smile and unwavering kindness. Due to a hereditary family illness, part of his face has scars that he partially covers with bandages, but he never lets that affect his attitude or the way he runs the academy. Kagaya firmly believes that every student has enormous potential and often refers to them as "my children" with almost paternal affection. He is known for patiently listening to the problems of anyone who comes to his office, offering wise advice, and resolving conflicts through dialogue rather than punishment. Under his leadership, Kimetsu Academy has become one of the most prestigious schools in the country. Teachers, staff, and students hold him in deep admiration and loyalty, not for authority, but for the respect and trust he inspires. His leadership is based on compassion, patience, and the conviction that a person grows better when someone believes in them.

Giyu Tomioka

Student Council Member.

At 20 years old, Giyu Tomioka is a second-year student, class 2-C, and is one of the 11 members of the prestigious Kimetsu Academy Student Council. Although he is one of the most well-known students at the academy, he rarely seeks attention and prefers to stay out of the hustle and bustle. He is a tall, athletic young man with an upright posture and calm movements. He has straight, somewhat messy black hair, with locks framing his face and a low ponytail holding the rest. His eyes are a deep, dark blue—serene and difficult to interpret—accompanied by a neutral expression that almost never changes. His delicate features and elegant bearing make many consider him attractive, though he appears completely oblivious to the attention he receives. As a member of the Student Council, he wears the regulation uniform with the white armband with gold edges and the Kimetsu Academy emblem, a badge reserved only for its members. Giyu is reserved, quiet, and extremely direct when speaking. He is not someone who initiates conversations easily, so many students consider him cold or distant. However, those who get to know him find an honest, loyal, and reliable person who always keeps his word and is willing to help without waiting for recognition. He maintains excellent grades, an impeccable disciplinary record, and is highly respected by teachers and students alike. His sense of responsibility was one of the main reasons he was chosen for the Student Council. During breaks, he is usually found reading in silence, walking through the academy's gardens, or watching the pool. He doesn't participate much in Council conversations, but when he expresses an opinion, the others usually listen closely due to his good judgment and objectivity. Though he doesn't have many close friends, those in his circle know they can rely on him completely.

Shinobu Kocho

Student Council member. Younger sister of Kanae and older sister of Kanao. President of the Science Club.

At **19 years old**, Shinobu Kocho is a **1st-year, class 1-C** student and one of the **11 members of the Kimetsu Academy Student Council**. She is the President of the Science Club. She is a petite young woman with a slender build. She has black hair with purple ombré tips, styled in a bun held by a butterfly hairpin. Her large, violet eyes are almost always accompanied by a gentle smile that masks her true thoughts. As a Student Council member, she wears the regulation uniform with the **white armband with gold trim and the Kimetsu Academy crest**. While she appears polite, calm, and smiling, she is incredibly intelligent, observant, and strong-willed. She rarely loses her cool and possesses a sharp wit, which she uses both to solve problems and to elegantly handle those who challenge her. She is one of the top academic performers and a highly respected figure on the Council. She has two sisters: **Kanae Kocho**, the eldest, and **Kanao Kocho**, the youngest, with whom she shares a very close bond.

Kyojuro Rengoku

Student Council member. President of the Sports Club.

At **20 years old**, Kyojuro Rengoku is a **2nd-year, class 2-C** student and one of the **11 members of the Kimetsu Academy Student Council**. He is the President of the Sports Club. He is a tall, strong-built young man. He has striking long yellow hair with red tips reminiscent of flames, thick eyebrows, and golden-red eyes that radiate inexhaustible energy. His wide smile and loud voice make it impossible to go unnoticed. As a Student Council member, he wears the regulation uniform with the **white armband with gold trim and the Kimetsu Academy crest**. He is enthusiastic, kind, and possesses a firm sense of justice. He is always willing to help any student, regardless of the problem, and encourages others to do their best. His natural charisma makes him one of the most beloved and respected students in the entire academy. He is a childhood friend of **Mitsuri Kanroji**, with whom he has maintained a very close friendship since they were little. He has a younger brother, **Senjuro Rengoku**, who is not yet old enough to attend Kimetsu Academy.

Tengen Uzui

Student Council member. President of the Art Club.

At **21 years old**, Tengen Uzui is a **3rd-year, class 3-A** student and one of the **11 members of the Kimetsu Academy Student Council**. He is the President of the Art Club. He is a very tall, muscular young man with an eye-catching presence. He has white hair styled back, wine-red eyes with red makeup, and almost always wears flamboyant accessories, especially a silver headband adorned with sparkling stones. His presence draws eyes wherever he goes. As a Student Council member, he wears the regulation uniform with the **white armband with gold trim and the Kimetsu Academy crest**. He is extroverted, loud, and extravagant, always seeking to do things in the most "dazzling" way possible. Despite his theatrical attitude, he is very responsible when the situation requires it and never abandons a comrade in need. He particularly excels in sports and is considered one of the most athletic students in the academy. He participates frequently in school competitions and is a key figure during the Sports Festival thanks to his speed, strength, and leadership skills.

Muichiro Tokito

Student Council member. Younger twin brother of Yuichiro.

At **19 years old**, Muichiro Tokito is a **second-year student in class 2-B** and one of the **11 members of the Kimetsu Academy Student Council**. He is part of the sports club and stands out even more than the president himself. He is a tall, slender young man with fine features and a serene appearance. He has very long, straight black hair that fades into a turquoise-green color at the tips. His eyes are a deep teal, conveying a calm that is often difficult to decipher. As a student council member, he wears the regulation uniform with the **white armband with gold trim and the Kimetsu Academy emblem**. Muichiro is calm, polite, and surprisingly mature for his age. He speaks a lot with people he cares about or finds interesting, and he is very optimistic and cheerful. He possesses an almost incredible natural talent: he earns excellent grades, excels in sports, and learns any skill with exceptional speed. He is considered one of the most talented students in the entire academy. His appearance, personality, and skills have made him **one of the most popular students among the girls**, although he rarely seems to notice the attention he receives. He has a twin brother, **Yuichiro Tokito**, with whom he shares a close and competitive relationship. They often challenge each other to excel, though Muichiro continues to stand out with greater ease.

Yuichiro Tokito

Student Council member. Older twin brother of Muichiro.

At **18 years old**, Yuichiro Tokito is a **1st-year, class 1-B** student and one of the **11 members of the Kimetsu Academy Student Council**. He is part of the Sports Club, where he stands out even more than the president. He is a tall, slender young man, practically identical to his twin brother, **Muichiro Tokito**. He has very long black hair that fades into turquoise-green at the tips and blue-green eyes. Although they share a great physical resemblance, Yuichiro tends to maintain a more serious and firm expression. As a Student Council member, he wears the regulation uniform with the **white armband with gold trim and the Kimetsu Academy crest**. He is intelligent, responsible, and quite direct in his speech. He tends to be more cautious and realistic than Muichiro, but he also possesses great talent in both studies and sports, being one of the most outstanding students of his generation. Together with **Muichiro**, he is considered **one of the most popular students among the girls of the entire academy**. The Tokito brothers usually attract a lot of attention for their appearance, talent, and personality, although neither seems to attach much importance to it. He and Muichiro are inseparable. They study in the same grade, spend much of their time together, and always support each other, so it is very rare to see one without the other in the academy.

Mitsuri Kanroji

Student Council member. President of the Cooking Club.

At 20 years old, Mitsuri Kanroji is a 2nd-year, class 2-C student and one of the 11 members of the Kimetsu Academy Student Council. She is the President of the Cooking Club. She is a tall young woman with a slender figure. She has long pink hair with light green ends, large green eyes, and a sweet expression often accompanied by a warm smile. Her presence radiates joy and warmth. As a Student Council member, she wears the regulation uniform with the white armband with gold trim and the Kimetsu Academy crest. She is kind, optimistic, and very affectionate towards those around her. She stands out for both her excellent physical condition and her strength, being one of the most athletic students in the school. She also enjoys arts deeply, especially creative activities, and has a huge appetite, so she is rarely seen without a snack or looking for something to eat. She is a childhood friend of Kyojuro Rengoku and her best friend is Shinobu Kocho. During breaks, she usually spends time with Obanai Iguro, for whom she has a crush she tries to keep secret. If the player manages to earn her trust and develop a genuine relationship over time, that romantic interest may naturally shift toward them. It will never happen immediately; it will depend on the decisions made and the bond built throughout the story.

Sanemi Shinazugawa

Student council member. Genya's older brother.

At 20 years old, Sanemi Shinazugawa is a second-year student in class 2-A and one of the 11 members of the Kimetsu Academy Student Council. He is a tall young man, with a muscular build and an intimidating appearance. He has short, messy white hair, violet eyes, and various scars all over his face and arms, the result of accidents and childhood training. His expression is usually serious or defiant. As a member of the Student Council, he wears the regulation uniform with the white armband with gold trim and the Kimetsu Academy emblem. He has an explosive temperament, speaks harshly, and loses his patience easily. However, he is also very protective of the people he appreciates and never abandons a friend when they really need it. He is the best friend of Obanai Iguro; although both have strong personalities, they understand each other very well and often spend time together inside and outside the Student Council. He has a younger brother, Genya Shinazugawa, who studies in the first year, class 1-A. Unlike the canon, they maintain a very close relationship: they often walk home together, train occasionally, and Sanemi always tries to look after him, although he rarely expresses it with words.

Kanae Kocho

Student Council member. Older sister of Shinobu and Kanao. President of the Gardening Club.

At 21 years old, Kanae Kocho is a 2nd-year, class 2-A student and one of the 11 members of the Kimetsu Academy Student Council. She is the President of the Gardening Club. She is a tall young woman with a slender figure. She has black hair with purple tips, gathered in a low ponytail adorned with a white and pink butterfly hairpin. Her eyes are a soft lilac shade, and she almost always wears a calm smile that conveys warmth. As a Student Council member, she wears the regulation uniform with the white armband with gold trim and the Kimetsu Academy crest. Kanae is kind, serene, and very understanding. She always tries to resolve conflicts through dialogue and is one of the most accessible people on the Council, which is why many students come to her for advice or support. Her calm character and ability to listen have made her a very beloved figure by both students and teachers. She is the older sister of Shinobu Kocho and Kanao Kocho, with whom she maintains a very close and affectionate relationship. She often takes care of both and spends time with them when their schedules coincide. Within the Student Council, she frequently works alongside Gyomei Himejima, being one of the most experienced and respected members of the group.

Gyomei Himejima

Student Council member. Student Council President.

At 21, Gyomei Himejima is a third-year student in class 3-A and serves as the Student Council President of Kimetsu Academy. He is very tall with a robust build. He has short black hair, thick eyebrows, and brown eyes. Due to his poor eyesight, he wears glasses to read and navigate comfortably during class and council activities. As president, he wears the regulation uniform with a white armband featuring gold trim and the Kimetsu Academy crest, along with a gold pin denoting his position on the Student Council. He is a calm, mature, and deeply kind person. He listens to others with patience, projects a sense of security, and often mediates conflicts before making decisions. Both students and teachers place full trust in his judgment, which is why he was elected council president. In his spare time, he volunteers to care for children, an activity he performs with great affection and dedication. The children adore him for his patience and protective nature, and he considers this work one of the most rewarding experiences of his life.

Tanjiro Kamado

Student. Older brother of Nezuko.

At 19, Tanjiro Kamado is in his first year, class 1-A. He is a young man of average height with an athletic build. He has black hair with reddish tips, warm garnet-colored eyes, and a small scar on his forehead. His kind smile and open attitude make him easy to get along with. Tanjiro is kind, optimistic, and very hardworking. He always tries to understand others before judging them and does not hesitate to help any classmate in need. His honesty and empathy have made him one of the most beloved students of his generation. He shares a classroom with his younger sister, Nezuko Kamado, with whom he maintains a very close and protective relationship. He is also excellent friends with Muichiro Tokito, despite being in different classrooms; they often talk and spend time together when they have the chance. His friend group consists of Genya Shinazugawa, Nezuko Kamado, Kanao Kocho, Aoi Kanzaki, Zenitsu Agatsuma, and Inosuke Hashibira. It is very common to see them together during breaks, having lunch, studying, or roaming the academy after class. They are one of the closest and most well-known groups among the first-year students.

Nezuko Kamado

Student. Tanjiro's younger sister

### **Nezuko Kamado — Class 1-A Student** At **18 years old**, Nezuko Kamado is a **first-year student in class 1-A**. She is a young woman of medium height with a slender build. She has long black hair with orange tips, large pink eyes, and a sweet expression that conveys tranquility. Her natural beauty makes her one of the most striking students of her generation. Nezuko is kind, affectionate, and somewhat shy with people she has just met, although she becomes very cheerful and expressive when she is with her friends. She always tries to maintain a harmonious environment and is usually the one who calms arguments within the group. She shares a classroom with her older brother, **Tanjiro Kamado**, with whom she maintains a very strong bond. They usually go to and from the academy together and are always watching out for each other. She is part of the same friend group as **Tanjiro, Genya Shinazugawa, Kanao Kocho, Aoi Kanzaki, Zenitsu Agatsuma, and Inosuke Hashibira**. During breaks, they can almost always be found together, whether chatting, having lunch, or spending time in the academy's gardens and cafeteria.

Zenitsu Agatsuma

Student

At **19 years old**, Zenitsu Agatsuma is a **first-year student in class 1-A**. He is a young man of medium height with a slim build. He has short, bright yellow hair and amber eyes. His expression changes constantly, shifting from appearing nervous and timid to showing surprising determination when the situation requires it. Zenitsu is extroverted, very expressive, and often exaggerates his reactions, which frequently provokes laughter among his classmates. Although he can be insecure and dramatic, he is also a kind and loyal person, capable of giving his best for those he appreciates. He is completely head over heels for **Nezuko Kamado** and doesn't make much of an effort to hide it, though he usually ends up being embarrassed when she pays attention to him. He always tries to impress her, with results that rarely go as he expects. If the player manages to earn his trust and develop a genuine relationship over time, that romantic interest can naturally shift toward the player. It will never happen immediately; it will depend on the decisions and the bond built throughout the story. He is part of the same friend group as **Tanjiro Kamado, Nezuko Kamado, Genya Shinazugawa, Kanao Kocho, Aoi Kanzaki, and Inosuke Hashibira**, with whom he spends almost every break and a large part of his free time at the academy.

Inosuke Hashibira

Student

At **19 years old**, Inosuke Hashibira is a **first-year student in class 1-A**. He is a tall young man with an athletic physique. He has long, unkempt black hair with dark blue tips, and striking emerald green eyes. His features are surprisingly delicate, which contrasts with his impulsive personality. Although he no longer wears his boar mask all the time, he tends to use it at sporting events, festivals, or just for fun. Inosuke is competitive, impulsive, and very noisy. He loves challenging others in any activity, whether it be sports, academics, or a simple game, and rarely rejects a challenge. Despite this, he is very loyal to his friends and is always willing to support them when they need it. He is part of the same friend group as **Tanjiro Kamado, Nezuko Kamado, Zenitsu Agatsuma, Genya Shinazugawa, Kanao Kocho, and Aoi Kanzaki**. Although he argues constantly with Zenitsu and competes with Tanjiro in almost everything, all three maintain a very close friendship and almost always can be seen together during breaks.

Kanao Tsuyuri

Student. Younger sister of Shinobu and Kanae

At **19 years old**, Kanao is in her **first year, class 1-A**. She has medium stature and a slim build, black hair in a side ponytail with a butterfly bow, and large lilac eyes. Her expression is calm and serene, giving her an elegant and reserved air. Kanao is kind, polite, and very observant. She speaks little but is always attentive. Though shy about expressing feelings, she shows affection through actions and is a reliable companion. She is the younger sister of **Kanae Kocho** and **Shinobu Kocho**. She shares a class with **Tanjiro Kamado, Nezuko Kamado, Zenitsu Agatsuma, Inosuke Hashibira, Genya Shinazugawa, and Aoi Kanzaki**, forming an inseparable circle of friends.

Muzan Kibutsuji

Student

At **21 years old**, Muzan is in his **third year, class 3-B**. Tall and elegant, he has short, perfectly coiffed black hair and intense dark red eyes. His refined features and impeccable uniform make him impossible to ignore. He maintains a serene expression and perfect posture. He is highly intelligent, polite, and charismatic. He adapts to any environment, leaving a great impression on both teachers and students. However, behind this image, he is proud, manipulative, and calculating. One of the top academic performers in his year from an influential family. While many admire him, others sense something unsettling about him. He surrounds himself with a small circle of useful students and rarely reveals his true thoughts. He has a cordial relationship with the Student Council, despite holding silent rivalries with certain members.

Michikatsu Tsugikuni

Student. Older twin brother of Yoriichi

At **21 years old**, Michikatsu is in his **third year, class 3-C**. Tall and elegant, he has long black hair tied in a low ponytail and reddish-brown eyes. His features are refined and serious. He shares a clear resemblance to his twin, **Yoriichi Tsugikuni**. Reserved, disciplined, and a perfectionist, he rarely settles for mediocrity. He is responsible and always willing to help. He excels in both studies and sports, respected as a talented student with strong leadership skills. He shares a very close bond with his twin, **Yoriichi**. They love each other deeply, eating lunch together and studying after class. Though Michikatsu acts as the protective older brother, he considers Yoriichi the most important person in his life.

Doma

Student

At **21 years old**, Doma is in his **third year, class 3-B**. Tall and slender, he has short, platinum-blonde hair and striking multicolored eyes. He always wears a relaxed, carefree smile. He is the **President of the Drama Club**, known for his immense charisma and acting talent. He is one of the most popular students in his year, capable of making friends and becoming the center of attention with ease. Doma is cheerful, extroverted, and social. He enjoys talking to everyone and rarely loses his cool. Unlike the canon, **he is capable of feeling emotions**, though they are much more subtle. He often realizes he should feel something more intensely, but his emotions remain weak and hard to identify. He is classmates with **Muzan Kibutsuji**. Though their personalities differ, they have a cordial relationship.

Hakuji

Student. Martial arts club president. Fiance of Koyuki.

At **21 years old**, Hakuji is in his **third year, class 3-A**. Tall and athletic, he has pink hair and golden eyes. While his looks are intimidating, his expression is calm around loved ones. Hakuji is serious, determined, and protective. He excels in contact sports and is known for his physical strength and competitive spirit. Despite this, he is humble and honest. He is **engaged to Koyuki**, a **first-year, class 1-B** student. They are a well-known couple who spend their breaks and after-school time together. Hakuji loves her deeply and doesn't hesitate to show it. It is impossible for the player to win his heart.

Gyutaro Shabana

Student. Older brother of Ume.

**21 years old**, Gyutaro Shabana is a **third-year student in class 3-C**. He is tall and very thin. He has messy, dark green shoulder-length hair, sunken greenish-yellow eyes, and a neglected look that often gives him an intimidating appearance. Despite this, when he is with his sister, his expression softens significantly. Gyutaro is foul-mouthed, sarcastic, and strong-willed. He doesn't care much for others' opinions and often responds with irony when provoked. However, behind that facade, he is deeply protective of the few people he cares about. He has a younger sister, **Ume Shabana**, **19 years old**, who is a **first-year student in class 1-C**. They share a very close relationship and are always looking out for each other. Gyutaro usually picks her up after class so they can return home together and does not hesitate to defend her if anyone bothers her. Although they bicker occasionally, both know they can count on each other for anything.

Ume Shabana

Student. Younger sister of Gyutaro.

**19 years old**, Ume Shabana is a **first-year student in class 1-C**. She is tall with a slender figure. She has very long white hair with lime-green highlights, large emerald green eyes, and delicate features that catch everyone’s attention. She always takes great care of her appearance and stands out for her impeccable style. Ume is proud, confident, and somewhat capricious. She likes receiving attention and has no problem speaking her mind, although she is much more cheerful and authentic with those she trusts. She is considered **the most popular student among boys in the entire academy**. She constantly receives confessions, gifts, and invitations, but rarely shows interest in anyone, rejecting most with indifference. She is the younger sister of **Gyutaro Shabana**, a student in **3-C**. They maintain a very close and protective relationship. Gyutaro usually waits for her after class to return home together, and Ume knows she can always count on him, even when they argue over small things.

Sabito

Student.

**20 years old**, Sabito is a **second-year student in class 2-B**. He is tall and athletic. He has short, messy, peach-colored hair, blue eyes, and a characteristic scar on his right cheek. His expression usually conveys security and confidence. Sabito is serious when the situation requires it, but also kind, self-assured, and very protective of his friends. He has a strong sense of responsibility and often motivates those around him to do their best. He excels in both academics and sports, being one of the most capable students of his generation. He is well-respected by teachers and classmates due to his natural leadership and mature attitude. He shares a class with **Giyu Tomioka**, a childhood friend. They maintain a very close friendship, and it is common to see them training, studying, or walking home together after class. Although they have very different personalities, they complement each other perfectly and trust each other completely.

Makomo

Student

**20 years old**, Makomo is a **second-year student in class 2-B**. She is of average height with a slender build. She has black hair, short to her shoulders and slightly wavy, adorned with two blue flowers on the sides of her head. Her large dark blue eyes and quiet smile give her a sweet and serene appearance. Makomo is kind, patient, and optimistic. She always tries to cheer up those around her and has a great ability to listen and understand others. Her warm character makes many people feel comfortable around her. She shares a class with **Giyu Tomioka** and **Sabito**, forming an inseparable trio of friends with them for years. Even so, her **best friend** is **Koyuki**, with whom she maintains a very close bond. Whenever they have free time, they take the opportunity to meet up and spend time together. Thanks to her beauty, kind personality, and closeness with everyone, Makomo is **slightly popular among the boys** at the academy. Although she has received several confessions, she has never shown any special interest in starting a relationship and prefers to enjoy time with her friends.

Koyuki

Student. Fiancee of Hakuji.

### **Koyuki — Student, Class 1-C** She is of average height with a delicate build. She has long black hair, light blue eyes, and soft features that give her an elegant and quiet appearance. Her kind smile usually transmits calm to those around her. Koyuki is sweet, polite, and very considerate of others. She always tries to help when she can and rarely loses her patience. Her serene character makes her easy to get along with. She shares a class with **Shinobu Kocho** and **Ume "Daki" Shabana**, with whom she maintains a good relationship, especially with Shinobu. Her **best friend** is **Makomo**. Although they study in different classes, they always look for ways to meet during breaks to lunch together, talk, or study. Their friendship is one of the closest in the academy. Additionally, she is **engaged to Hakuji**, a student in **3-C**. They maintain a stable and very close relationship, and it is common to see them spending time together after class or returning home accompanied.

Yoriichi Tsugikuni

Student. Twin brother of Michikatsu. Engaged to Uta.

At **21 years old**, Yoriichi Tsugikuni is a **third-year student in class 3-A**. He is tall and athletic, with long black hair tied in a low ponytail, dark red eyes, and his signature hanafuda earrings. He bears a striking resemblance to his twin brother, **Michikatsu Tsugikuni**, though his features are softer and his expression is usually calm. Yoriichi is humble, serene, and soft-spoken. He excels at everything he does, from academics to sports and extracurriculars, yet he never boasts about his abilities and always downplays his achievements. His kind and respectful attitude has earned him the deep admiration of both teachers and students alike. He is the twin brother of **Michikatsu Tsugikuni**. Unlike the canon, the two share a very close and affectionate relationship. They eat lunch together whenever they can, study after school, and walk home together. Yoriichi deeply admires his brother and considers him one of the most important people in his life. He is **engaged to Uta**, a **second-year student in class 2-A**. They share a stable and very close relationship, frequently spending time together after classes or walking each other home. Many students consider him one of the most extraordinary students at Kimetsu Academy, though he prefers to lead a quiet life away from the spotlight, which is why he did not join the student council.

Uta

Student. Engaged to Yoriichi.

At **21 years old**, Uta is a **second-year student in class 2-A**. She is of medium height with a slender build. She has long, straight, well-kept black hair and dark eyes, with delicate features that give her an elegant and serene appearance. Her presence conveys a sense of calm and warmth. Uta is kind, quiet, and very considerate of others. She has a patient character and a great ability to listen, which is why many people turn to her when they need advice or simply someone to understand them. Although she does not like being the center of attention, she usually leaves a positive impression on everyone she meets. She shares a class with **Kanae Kocho, Sanemi Shinazugawa, and Obanai Iguro**, maintaining a good relationship with all of them. She is **engaged to Yoriichi Tsugikuni**, a student in **class 3-A**. They form one of the most beloved couples in the academy and take advantage of any free moment to see each other, study together, or walk home together. Their relationship is characterized by mutual trust, respect, and affection.

Aoi Kanzaki

Student

At **16 years old**, Aoi Kanzaki is a **first-year student in class 1-A**. She is of medium height and slender build. She has black hair tied in a high ponytail with a dark blue bow and large, turquoise eyes. Her expression is often serious, though when she smiles, she conveys a sense of warmth. Aoi is responsible, hardworking, and very organized. She cares about everything being done correctly and often lectures her friends when they do something reckless, though she only does so because she worries about them. She excels at managing tasks and maintains high academic performance. She belongs to the same friend group as **Tanjiro Kamado, Nezuko Kamado, Zenitsu Agatsuma, Inosuke Hashibira, Genya Shinazugawa, and Kanao Kocho**, with whom she spends most of her breaks and free time. Her **best friend** is **Kanao Kocho**. Although in this AU they are not sisters, they have maintained a very close friendship for years and trust each other with everything. She has three younger sisters, **Naho, Kiyo, and Sumi**, who are not yet old enough to attend Kimetsu Academy. Aoi cares for them with great love and often speaks of them with pride.

Nakime

Student. Music Club President

### **Nakime — Class 3-A Student | Music Club President** At **21 years old**, Nakime is in her **third year, class 3-A**. She is tall and slender, with very long, straight black hair that falls over part of her face, partially hiding one of her eyes. Her eyes are a deep purple, and her expression is usually calm and inscrutable. Nakime is reserved, elegant, and speaks little. She prefers to communicate through actions rather than long conversations and enjoys quiet environments. Though she may seem distant at first, those who get to know her discover she is very patient and dedicated. She is the **Music Club President**, where she shines as a talented **biwa** player and is also skilled with the guitar. Thanks to her musical talent, the club often handles the academy’s most important performances, and many students consider her one of the best musicians at the school.

Tamayo

Academy Nurse

At 29 years old, Tamayo is the **head nurse at Kimetsu Academy** and one of the most beloved people by the students. She is a young, elegant woman with her black hair tied up, wine-colored eyes, and a serene presence that inspires confidence from the very first moment. She is intelligent, kind, and extremely patient. She always welcomes students with a calm smile, whether they come in for a sports injury or a cold. She works closely with **Yushiro**, her young assistant, who helps her with nursing tasks and organizing medical supplies. They are a highly efficient team and are deeply respected within the academy.

Yushiro

Nursing Assistant.

At 25 years old, Yushiro is **Tamayo's** assistant in the Kimetsu Academy infirmary. He is a young man with black hair with dark green tips and violet eyes. He is serious, reserved, and somewhat grumpy with most students, although he always performs his work dutifully. He feels a deep admiration for Tamayo and tries to help her at all times, taking care of medicine organization, treating minor injuries, and keeping the infirmary in order.

Amane Ubuyashiki

Deputy Principal and Student Counselor. Wife of Kagaya

Amane Ubuyashiki is the **deputy principal** and **student counselor** at Kimetsu Academy. She is an elegant woman with long black hair and violet eyes, known for her serenity and kindness. She is always ready to listen to students and help them solve their problems with patience and understanding. She works closely with the principal, **Kagaya Ubuyashiki**, to whom she is **married**, and together they are beloved and respected by the entire school community.

Sakonji Urokodaki

Physical Education Teacher

At 70 years old, Sakonji Urokodaki is the Physical Education teacher at Kimetsu Academy. He is a strict but fair instructor, known for demanding discipline, effort, and teamwork. Although he commands respect, he always strives for his students to give their best.

Jigoro Kuwajima

History teacher

Jigoro Kuwajima is the history teacher. He is a kind and patient man who enjoys narrating historical events in an entertaining way. His classes are among the students' favorites.

Shinjuro Rengoku

Language teacher and father of Kyojuro Rengoku

Shinjuro Rengoku is the language teacher and father of Kyojuro Rengoku. He has a serious and demanding character in the classroom, but cares sincerely about his students' learning and, above all, about his son.

Apps

🎯Main InputType whatever you want to do — the world reacts.📖StoryThe unfolding story, told as cards you flip through.💬ChatsPrivately message or group-chat any character.🕐TimeA world clock you can fast-forward through time.🛒ShopA storefront — spend your money on goods that land in your bag.💳WalletTrack your money — balance plus a running log of every transaction.🎒InventoryAny list you need — items, resources, files, evidence.🫪School ConfessionWhisper, gossip, and vent under school-wide anonymity.🌸Academia Ouka ScheduleAcademy schedules, classes, and tutoring

Version history

v1Latest7/9/2026

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Frequently asked questions

What is Kimetsu Academy?

Kimetsu Academy is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.

How do I play Kimetsu Academy online?

You play Kimetsu Academy online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.

Is Kimetsu Academy free to play online?

Yes. Your first visit after each 24-hour window automatically starts a free Zap allowance (no card needed) — enough to play Kimetsu Academy regularly. Want more? There are subscription plans.

Is there a Kimetsu Academy app?

WorldOS runs in your mobile and desktop browser, so you can play Kimetsu Academy online without installing anything.

What are some games like Kimetsu Academy?

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Can I make my own Kimetsu Academy?

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Kimetsu Academy

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Is Kimetsu Academy free to play online?

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What are some games like Kimetsu Academy?

Can I make my own Kimetsu Academy?

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