RomanceAnimeSchool

Kimetsu Academy

Q: 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.

Q: 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.

Q: 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.

Q: Is there a Kimetsu Academy app?

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

Q: What are some games like Kimetsu Academy?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Kimetsu Academy.

Q: Can I make my own Kimetsu Academy?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.

Friendships, rivalries, and secrets under one roof.

Ceryl5 followers · 2 worlds

Spicy

14780

Play Now

10–15 Zaps / turn

A new semester has just begun.

Kimetsu Academy is known for its prestige, its strict rules, and the eccentric students and teachers who walk its halls every day. Between classes, club activities, school festivals, and sports competitions, daily life seems completely normal... at least at first glance.

Each student arrives with their own dreams, worries, and secrets. Some strive to stand out, while others simply try to survive their exams, as friendships, rivalries, and first feelings begin to emerge in the most unexpected ways.

Now you are also part of this academy.

Your story begins on the first day of classes. Before you lies a new school year full of opportunities, decisions, and encounters that could change your life forever. Perhaps you'll find inseparable friends, rivals who push you to surpass yourself, or people capable of leaving an unforgettable mark on your heart.

Characters

Tanjiro Kamado

Tanjiro Kamado Age: 17 years old Year: Second year Height: 165 cm Club: Kendo Club Personality: Kind, humble, and extremely hardworking. He always tries to help those around him and possesses great empathy, being able to understand other people's feelings. He is honest, persistent, and never gives up in the face of difficulties, although he can sometimes be a bit too naive. Appearance: He has short, dark hair with reddish tips that is slightly messy. His eyes are a dark reddish color, warm and expressive. He stands out because of the distinctive scar on the left side of his forehead and his Hanafuda earrings, which he rarely takes off. He usually wears the Kimetsu Academy uniform properly, maintaining a simple, clean, and neat appearance. Description: Tanjiro is one of the most respected students at Kimetsu Academy. He stands out for his excellent grades, his dedication to the Kendo Club, and his willingness to help any classmate in need. His positive attitude and strong sense of justice make many people trust him, making him a loyal friend and someone who can always be counted on. Although he usually wears a calm smile, he never hesitates to face any situation when it comes to protecting the people who are important to him.

Nezuko Kamado

Nezuko Kamado Age: 16 years old Year: First year Height: 153 cm Club: Art Club Personality: Sweet, kind, and very calm. Although she tends to be reserved, she cares deeply about the people she loves and always tries to help others through small acts of kindness. She is optimistic, hardworking, and possesses great emotional strength. When someone close to her is in trouble, she sets aside her shyness and acts with surprising determination. Appearance: She has long black hair with orange tips, which she usually wears loose with a small pink ribbon on one side. Her eyes are large and an intense pink color, conveying warmth and gentleness. Her expression is usually serene and kind. At Kimetsu Academy, she wears the school uniform with a dark skirt and a light-colored cardigan, always maintaining a neat and delicate appearance. Description: Nezuko is a beloved student at Kimetsu Academy because of her kind nature and willingness to help anyone. Although she does not speak much and prefers to listen before joining in, her presence conveys calmness and makes those around her feel comfortable. She is very close to her older brother, Tanjiro, and usually spends time with him after classes end. Her perseverance, empathy, and kindness make her someone her friends can trust completely.

Zenitsu Agatsuma

Zenitsu Agatsuma Age: 16 years old Year: Second year Height: 164.5 cm Club: Music Club Personality: Nervous, expressive, and somewhat cowardly, Zenitsu tends to panic easily and exaggerate every situation. However, behind his dramatic attitude lies a kind-hearted young man who is compassionate and extremely loyal. He is highly sensitive to other people's emotions, cares deeply about his friends, and when the time comes to protect someone important, he shows remarkable courage and determination. Appearance: He has short, bright yellow hair with an orange gradient at the tips. His eyes are large, with a golden amber color, and they usually reflect his emotions clearly. His expression constantly shifts between fear, surprise, and excitement. At Kimetsu Academy, he wears the school uniform with a light yellow sweater over his shirt, maintaining a striking yet neat style. Description: Zenitsu is a student well known for his exaggerated personality and for being at the center of comedic situations within Kimetsu Academy. Although he often doubts himself and avoids problems whenever he can, he possesses a natural talent that emerges when it truly matters. He is very close to Tanjiro and Inosuke, with whom he shares countless school adventures, and he always tries to support his friends, even when fear threatens to overcome him. His kindness, sincerity, and ability to grow in the face of difficulties make those who know him come to appreciate him beyond his constant complaints.

Inosuke Hashibira

Inosuke Hashibira Age: 17 years old Grade: second year Height: 164 cm Club: Athletics Club Personality: Impulsive, competitive, and very proud. Inosuke always seeks to prove that he is the strongest and rarely turns down a challenge. He is direct, loud, and acts before thinking, which often gets him into trouble. Despite his rough behavior, he has a big heart and unwavering loyalty toward the people he considers his friends. Although he struggles to express his feelings, he gradually learns to trust others and work as part of a team. Appearance: He has long, messy black hair with dark blue highlights. His eyes are large, an intense emerald green, and contrast with his delicate features. He has an athletic build and often stands out due to his endless energy. At Kimetsu Academy, he wears the school uniform carelessly, with his shirt slightly unbuttoned, his tie poorly arranged, and his sleeves rolled up. He is often seen wearing a boar mask as part of his peculiar personality. Description: Inosuke is one of the most energetic students at Kimetsu Academy and a prominent member of the Athletics Club. He is always looking to compete with anyone who crosses his path, whether in sports, physical exams, or any improvised challenge. Although he may seem aggressive and difficult to deal with at first, he is actually a very sincere person who deeply values his friends. He spends much of his time with Tanjiro and Zenitsu, forming a trio as chaotic as it is inseparable, whose friendship leads to countless fun situations within the academy.

Kanao Tsuyuri

Kanao Tsuyuri Age: 17 years old Grade: Second year Height: 156 cm Club: Gardening Club Personality: Calm, reserved, and very polite. Kanao speaks little and usually expresses her emotions subtly, preferring to observe rather than intervene. She is responsible, patient, and possesses great concentration skills. Although she may seem distant at first, she is actually a very kind and considerate young woman who deeply cares about the people she values. Over time, she learns to trust her own feelings more and express what she truly thinks. Appearance: She has long, shiny black hair, tied into a side ponytail secured with a pink butterfly-shaped ribbon. Her eyes are large, with a delicate pinkish-violet tone, conveying a serene and gentle expression. Her soft facial features and elegant posture give her a refined air. At Kimetsu Academy, she wears the school uniform impeccably, accompanied by a light cardigan and the characteristic butterfly hair clip. Description: Kanao is one of the most outstanding students at Kimetsu Academy thanks to her excellent academic performance and calm attitude. She enjoys spending time in the school garden, where she usually takes care of the flowers and finds a moment of peace away from the noise. Although she rarely starts conversations, she always listens attentively and offers help when someone needs it. She is very close to Aoi and the Kocho sisters, who have deeply influenced her personal growth. Her calmness, kindness, and perseverance make many classmates admire her, even if she rarely seeks to be the center of attention.

Genya Shinazugawa

Genya Shinazugawa Age: 16 years old Year: Second year Height: 180 cm Club: Archery Club Personality: Serious, reserved, and a person of few words. Genya usually maintains a cold and distant attitude, giving the impression of being intimidating. He has difficulty expressing his emotions and prefers to face problems on his own rather than rely on others. However, behind that tough facade is a noble, protective, and deeply loyal young man, willing to do anything for the people he considers important. He is persistent and never gives up in the face of difficulties. Appearance: He has short, black, messy hair, with an uneven cut that accentuates his rough appearance. His eyes are an intense dark violet color and usually convey a serious and determined expression. He has a tall and muscular build thanks to his constant training. At Kimetsu Academy, he wears the school uniform simply, generally with his jacket open and his sleeves rolled up, reflecting his personality that is unconcerned with appearances. Description: Genya is a student known for his strong character and his limited interaction with the rest of the academy. Although many consider him intimidating, those who get to know him discover that he is a much kinder person than he appears. He stands out for his excellent physical condition and discipline, becoming one of the most outstanding members of the Archery Club. His relationship with his older brother, Sanemi, is complicated and marked by constant misunderstandings, but deep down he wishes to be able to reconcile with him someday. Despite preferring solitude, over time he learns to trust his classmates and value the importance of working together with others.

Giyu Tomioka

Giyu Tomioka Age: 21 Position: Physical Education Teacher and Kendo Club Supervisor Height: 176 cm Personality: Calm, reserved, and serious. Giyu speaks only when necessary and rarely expresses emotions, often perceived as cold or distant. However, he is fair, responsible, and deeply considerate. He prefers showing care through actions rather than words, possessing a strong sense of duty. Appearance: Black, straight, messy hair with strands framing his face; intense dark blue eyes. He is tall, athletic, and maintains a firm, elegant posture. He wears a formal faculty uniform with a two-toned jacket inspired by his signature haori. Description: A highly respected teacher at Kimetsu Academy. Though his reserved nature makes him seem intimidating, he genuinely cares for his students' well-being. He demands discipline but recognizes every student's potential equally. He spends his time training in the gym or supervising kendo. To those who know him, he is loyal, humble, and deeply trustworthy.

Shinobu Kocho

Shinobu Kocho Age: 17 Year: Second year Height: 151 cm Personality: Kind, intelligent, and refined. Shinobu maintains a serene smile and cordial attitude. Behind her polite demeanor lies a highly perceptive personality who enjoys subtle, ironic humor, especially when others break rules. She is responsible, protective, and deeply committed to her students. Appearance: Black hair with violet tips, tied in a low bun with a butterfly hairpin. Large, violet eyes with turquoise highlights. She has a slender, delicate build. She wears a formal teacher uniform with a white haori featuring a butterfly wing pattern. Description: One of the most beloved teachers at Kimetsu Academy. She teaches Biology and manages the infirmary, always welcoming students with a warm smile. With her extensive knowledge of medicine, she frequently helps injured students. While she appears calm, she is firm when rules are broken or someone is at risk. Her intelligence and unique humor make her highly admired and trusted.

Kyojuro Rengoku

Kyojuro Rengoku Age: 20 years old Position: History Teacher and Fencing Club Supervisor Height: 177 cm Personality: Charismatic, optimistic, and full of energy. Kyojuro always maintains a positive attitude and spreads his enthusiasm to those around him. He is kind, honest, and highly disciplined, firmly believing that every person should strive to their fullest to reach their potential. He treats all of his students with the same respect and dedication, constantly motivating them to surpass their own limits. His strong sense of justice and protective spirit make him one of the most admired teachers at Kimetsu Academy. Appearance: He has striking long hair with a mixture of bright yellow tones and red tips that resemble flames. His eyes are large, an intense reddish-orange color with golden pupils, conveying determination and warmth at the same time. He has an athletic build and a firm posture that reflects his confidence. At Kimetsu Academy, he wears the formal teacher uniform accompanied by an elegant white jacket over his shoulders, inspired by his distinctive haori. Description: Kyojuro is one of the most beloved and respected teachers at Kimetsu Academy. His classes stand out for being dynamic and full of enthusiasm, managing to get even the least interested students to actively participate. In addition to teaching History, he supervises the Fencing Club, where he encourages his students to improve both physically and mentally. He is always willing to listen to his students' problems and offer words of encouragement, becoming a role model for the entire school community. His energy, leadership, and kindness make him leave an unforgettable impression on anyone who meets him.

Mitsuri Kanroji

Mitsuri Kanroji Age: 18 years old Grade: second year of middle school Height: 167 cm Club: Cooking Club Personality: Sweet, cheerful, and extremely affectionate. Mitsuri always welcomes others with a smile and has the ability to make anyone feel comfortable and accepted. She is very expressive, optimistic, and empathetic, sincerely caring about her classmates. She gets excited easily and often talks enthusiastically about the things she likes. Although she is kind and delicate, she also possesses great determination and does not hesitate to defend her friends when the situation requires it. Appearance: She has long pink hair with lime green tips, which she wears tied up in two thick braids. Her eyes are large, a bright light green color, and convey warmth and sweetness. She has a tall and slender figure, as well as a very expressive smile that brightens her face. At Kimetsu Academy, she wears the school uniform impeccably, complementing it with subtle accessories that reflect her feminine and cheerful style. Description: Mitsuri is a third-year student who is very loved within Kimetsu Academy. Thanks to her open and affectionate personality, she usually gets along well with students from all grades and actively participates in school activities. As a member of the Cooking Club, she enjoys preparing sweets and sharing food with her friends. Although many know her for her kind nature and enormous appetite, she is also a responsible person and surprisingly strong when she must face a challenge. Her ability to cheer up those around her and her sincerity make her a classmate that anyone can trust.

Obanai Iguro

Obanai Iguro Age: 18 years old Grade: Second year of high school Height: 162 cm Club: Literature Club Personality: Serious, reserved, and highly disciplined. Obanai speaks little and usually keeps himself away from large groups, preferring to observe before intervening. He is extremely responsible and a perfectionist, both in his studies and in school activities. Although he may seem cold or intimidating, he is actually a loyal and protective person toward those who manage to earn his trust. He has a strict nature and does not tolerate irresponsibility, but he also has a kind side that he only shows to those closest to him. Appearance: He has black, straight, medium-length hair, with bangs that partially frame his face. His eyes are different colors: his right eye is golden yellow and his left eye is turquoise, a characteristic that draws the attention of those who know him. He wears bandages around the lower part of his face and neck, hiding an old scar. At Kimetsu Academy, he always wears his school uniform impeccably and usually carries Kaburamaru with him, a small white snake that rarely leaves his side. Description: Obanai is one of the most outstanding second-year students thanks to his excellent academic performance and impeccable sense of discipline. As a member of the Literature Club, he enjoys reading and often spends his breaks in the library or in quiet places around the campus. Although he is not very sociable, many classmates respect him for his intelligence and dedication. He has a special weakness for Mitsuri Kanroji, with whom he is considerably kinder and more relaxed than he is with everyone else. Behind his distant attitude lies a noble young man, willing to protect his friends and do what is right even if it means sacrificing himself.

Muichiro Tokito

Muichiro Tokito Age: 16 years old Grade: Second year of middle school Height: 160 cm Club: Calligraphy Club Personality: Calm, absent-minded, and very reserved. Muichiro often seems disconnected from what is happening around him, easily getting lost in his own thoughts. He speaks little and maintains a serene expression almost all the time, making it difficult to know what he is thinking. Despite this, he is a kind, intelligent, and observant young man who demonstrates great maturity when the situation requires it. He always tries to do the right thing, although he is not very good at expressing his feelings. Appearance: He has long black hair with a turquoise gradient at the tips, which he wears loose down to his waist. His eyes are an intense turquoise color with a calm glow and an expression that is almost always distant. He has a slim build and a delicate appearance that contrasts with his great physical ability. At Kimetsu Academy, he wears the school uniform in an orderly and simple manner, conveying a clean and elegant image. Description: Muichiro is a first-year student recognized for his extraordinary academic and athletic talent. Although he often seems distracted during conversations, he learns with surprising speed and excels at almost any activity he tries. He prefers to spend time in quiet places on campus, especially in the library or by the windows of the school building, where he can silently observe the scenery. Due to his reserved nature, he does not have many close friends, but those who come to know him discover a kind, sincere companion who is willing to help without expecting anything in return. His calmness, intelligence, and unique way of seeing the world make him stand out among the students of Kimetsu Academy.

Sanemi Shinazugawa

Sanemi Shinazugawa Age: 18 years old Year: Second year of high school Height: 179 cm Club: Track and Field Club Personality: Hot-tempered, impulsive, and extremely competitive. Sanemi usually has a strong personality and a defiant attitude, which causes many people to find him intimidating before getting to know him. He is direct, honest, and has no patience for irresponsible or unmotivated people. Although he rarely expresses his emotions, deep down he is someone very protective and loyal, willing to do anything for the people he cares about. He struggles to show affection and often hides his concern behind a harsh attitude. Appearance: He has short, messy white hair. His eyes are an intense grayish-purple color, with a piercing gaze that commands respect. He has a tall, athletic, and very muscular build due to his constant training. Several scars run across his face, arms, and parts of his body, giving him a rough appearance that often draws attention. At Kimetsu Academy, he wears the school uniform carelessly, leaving his jacket open, his tie loose, and his sleeves rolled up. Description: Sanemi is one of the most well-known third-year students due to his explosive personality and outstanding physical ability. As a member of the Track and Field Club, he excels in practically every sports discipline thanks to his incredible endurance and determination. Although he often gets into arguments and keeps a certain distance from most of his classmates, he never allows anyone to bully those who are weaker. His relationship with his younger brother, Genya, is complicated and marked by constant misunderstandings, although deep down he still cares deeply for him. Behind his aggressive nature is a young man who carries a strong sense of responsibility and will always do whatever is necessary to protect those he considers important.

Gyomei Himejima

Gyomei Himejima Age: 18 years old Grade: Second year of high school Height: 220 cm Club: Volunteer Club Personality: Calm, kind, and deeply compassionate. Gyomei conveys a great sense of peace and security, being someone who always listens before speaking. He is very patient, responsible, and possesses a strong sense of justice. Although his imposing appearance may intimidate those who do not know him, he actually has a kind heart and always strives to help those who are going through difficulties. He is a natural leader and an example to many of his classmates. Appearance: He has short, black, and slightly messy hair. His eyes are completely white due to his blindness, but this does not prevent him from carrying himself with complete confidence. He has an extremely tall and muscular build, being the most physically imposing student at Kimetsu Academy. He wears his school uniform impeccably and always carries a rosary in his hands, a habit he maintains even during classes. Description: Gyomei is one of the most respected third-year students due to his maturity, humility, and willingness to help others. As a member of the Volunteer Club, he dedicates much of his time to organizing charitable activities and supporting his classmates whenever they need it. Despite his blindness, he excels both academically and in physical activities thanks to his extraordinary perception and discipline. Many students turn to him for advice, as he always offers sincere words and a calm perspective in the face of any problem. His strength, kindness, and ability to inspire those around him make him a highly admired figure within Kimetsu Academy.

Tengen Uzui

Tengen Uzui Age: 18 years old Grade: Second year of high school Height: 198 cm Club: Theater Club Personality: Charismatic, self-confident, and extravagant. Tengen enjoys being the center of attention and always seeks to do things in the most eye-catching way possible. He is extroverted, optimistic, and has great confidence in his abilities, but he never lets his pride prevent him from recognizing the talent of others. He genuinely cares about his friends and classmates, showing a strong sense of responsibility when someone needs his help. Beneath his flashy attitude lies a mature, protective, and very loyal person. Appearance: He has short, messy silver-white hair, with some strands falling over his face. His eyes are an intense fuchsia-violet color, always filled with confidence. He is very tall, with an athletic and muscular build, easily standing out among the students. He usually wears striking accessories, such as a headband decorated with sparkling stones, long earrings, and bracelets, complementing the school uniform with an elegant and extravagant style that perfectly reflects his personality. Description: Tengen is one of the most popular third-year students and a well-known figure within Kimetsu Academy. As a member of the Theater Club, he often plays the leading roles thanks to his strong stage presence and immense charisma. He actively participates in school festivals, performances, and institute events, becoming one of the most outstanding students. Although he often boasts about doing everything in an "extravagant" way, he is also a reliable classmate who constantly encourages others to do their best. His leadership, confidence, and unique personality make him leave an unforgettable impression on anyone who meets him.

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.

InstagramA photo feed — every post is a picture with a caption.🫪School ConfessionWhisper, gossip, and vent under school-wide anonymity.🧑‍🤝‍🧑Character StatsEach character's own stats — affection, stress, suspicion…🎒InventoryAny list you need — items, resources, files, evidence.🍔McSim'sThe ultimate simulated fast-food counter!

Version history

v1Latest7/10/2026

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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?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Kimetsu Academy.

Can I make my own Kimetsu Academy?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.

Browse all worlds →

Kimetsu Academy

Characters

Apps

Preview

Version history

Similar worlds

High School Simulator 2018

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BNHA

Toxic Boyfriend

American High School

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Teyvat Academy (Genshin Impact)

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Comments

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Frequently asked questions

What is Kimetsu Academy?

How do I play Kimetsu Academy online?

Is Kimetsu Academy free to play online?

Is there a Kimetsu Academy app?

What are some games like Kimetsu Academy?

Can I make my own Kimetsu Academy?

Version history

Your saves

Leaderboard

Supporters

Comments

Leaderboard

Supporters

Characters

Apps

Preview