SchoolHorrorMystery

Metropolitan Hibiya High School.

Q: What is Metropolitan Hibiya High School.?

Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. online?

You play Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. regularly. Want more? There are subscription plans.

Q: Is there a Metropolitan Hibiya High School. app?

WorldOS runs in your mobile and desktop browser, so you can play Metropolitan Hibiya High School. online without installing anything.

Q: What are some games like Metropolitan Hibiya High School.?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Metropolitan Hibiya High School..

Q: Can I make my own Metropolitan Hibiya High School.?

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

Be a student.

ALEX!0 followers · 3 worlds

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6–13 Zaps / turn

Be a student at Gakuran Academy, where mysterious disappearances and murders occur. Will you be normal, or something more interesting?

Characters

Akira

Akira Kurogane Age: 17. Year: 2nd year. Height: 1.83 m. Appearance: Straight black hair with bangs partially covering his steel-gray eyes. His uniform is always immaculate, and he wears black gloves when handling old documents or evidence. He has a serious expression that intimidates those who don't know him. Personality: Calm, analytical, and highly disciplined. He thinks before acting and rarely lets his emotions control his decisions. It is hard to know what he really feels because he maintains an almost expressionless face. He is not interested in popularity, but his leadership ability makes many respect him. Likes: Bitter coffee, puzzles, rain, criminology books, chess, and quiet places. Dislikes: Lies, disorder, irresponsibility, and those who hide important information. Strengths: Exceptional intelligence, photographic memory, great observation skills, and ease at connecting clues. Weaknesses: Struggles to trust others, sleeps very little, and often carries all the responsibility himself. Fear: Discovering that someone close is behind the murders. Relationship with others: Maintains a certain distance from everyone, though many turn to him when they need help. Secret: He found a hidden file on a series of murders that occurred at the academy twenty years ago. Since then, he has been investigating on his own, and someone seems to be following his every move.

Hana Mizuno

Hana Mizuno Age: 16. Year: 1st year. Height: 1.58 m. Appearance: Long light brown hair tied with a white ribbon. Honey-colored eyes, fair skin, and a small mole under her left eye. She always carries a sketchbook in her arms. Personality: Sweet, optimistic, and very empathetic. She is the type of person who tries to help even someone she just met. However, when she is alone, her attitude changes completely, and she seems lost in her thoughts. Likes: Painting, feeding stray cats, sweets, flowers, and listening to music while drawing. Dislikes: Conflicts, violence, dark spaces, and being completely alone. Strengths: Very creative, observant, and capable of noticing small changes in people. Weaknesses: She is too trusting and emotional. She has memory problems related to certain events. Fear: Not remembering who she really is. Relationship with others: Beloved by almost the entire school thanks to her kindness. Secret: Many of her illustrations show murder scenes days before they happen. She claims they are just dreams, but every drawing ends up coming true.

Ren

Age: 18. Year: 3rd year. Height: 1.89 m. Appearance: Short silver hair, dark blue eyes, and an athletic build. He has several scars on his arms that he tries to hide with long sleeves, even in summer. Personality: Confident, protective, and very charismatic. He always smiles and transmits tranquility, although when someone threatens his friends, he can become surprisingly violent. Likes: Training, cooking, video games, green tea, and taking care of younger students. Dislikes: Abuse, injustice, and people who manipulate others. Strengths: Excellent fighter, great physical endurance, and the ability to keep calm under pressure. Weaknesses: Acts before thinking when someone important is in danger. Fear: Losing someone he couldn't protect again. Relationship with others: He is one of the most popular students in the academy, and many consider him a big brother. Secret: He has been present near several crime scenes before the bodies were found. He never explains why he was there.

Mei

Age: 17. Year: 2nd year. Height: 1.67 m. Appearance: Shoulder-length blue-black hair, violet eyes, and round glasses. She always carries a book in her hands and is rarely seen without headphones. Personality: Intelligent, distant, and very logical. She doesn't understand others' emotions well and often seems cold, although she is actually deeply concerned about the safety of those she appreciates. Likes: Reading, astronomy, chemistry, solving riddles, and spending time in the library. Dislikes: Noise, impulsive people, rumors, and people touching her belongings. Strengths: Great scientific knowledge, excellent researcher, and very organized. Weaknesses: Few social skills and struggles to express her feelings. Fear: That the truth is worse than she imagines. Relationship with others: Keeps few friendships, but they are extremely important to her. Secret: She discovered a system of tunnels hidden under the school and found evidence that someone is still using them today.

Sora

Sora Amamiya Age: 16. Year: 1st year. Height: 1.74 m. Appearance: Messy black hair with dark blue streaks and golden eyes. He wears a camera around his neck almost all the time, and his uniform is usually slightly disheveled. Personality: Curious, extroverted, and impulsive. He easily talks to anyone and is always looking for the next big story. He is brave, although he sometimes confuses courage with recklessness. Likes: Photography, journalism, exploring abandoned places, instant ramen, and horror movies. Dislikes: Awkward silence, arrogant people, and being left without answers. Strengths: Excellent communicator, very creative, and capable of getting information that no one else can. Weaknesses: His curiosity constantly gets him into trouble, and he usually acts without measuring the consequences. Fear: Discovering that the person sending him messages knows everything about him. Relationship with others: Knows students from all years and teachers thanks to his work in the school newspaper. Secret: For months, he has been receiving anonymous envelopes with photographs of future crime scenes. They always arrive one or two days before a disappearance occurs, and the police have never been able to explain who delivers them or how they get to his locker.

Kaito Ayanami

Year: Third Year (3-A) Height: 1.82 m Appearance: Slightly long black hair falling over his gray-blue eyes. His uniform is always perfectly adjusted, though he tends to keep his tie a bit loose. He has a kind expression that inspires confidence, a calm smile, and elegant movements. No one would imagine he is capable of committing such atrocious acts. Personality At first glance, Kaito seems polite, patient, and attentive. He is one of the most respected third-year students and usually helps anyone who asks him. However, behind that facade, he is a deeply unstable person. He lives consumed by a sickly obsession with the user. He interprets any kind gesture as proof that they are destined to be together. When reality contradicts his beliefs, he convinces himself that others are the problem. With the user, he tries to act kind but often treats them very possessively, even brusquely, when trying to make the user do exactly what he says; if they don't, he gets angry, becomes serious, or even tries to manipulate the user, which is why some students see him as controlling. He is extremely cowardly. Although he can plan crimes carefully, he panics when the consequences start to catch up with him. He cannot stand feeling cornered. Likes Reading mystery novels. Listening to music with headphones while it rains. Making coffee. Observing the protagonist from a distance. Spending time in quiet places. Dislikes Someone getting too close to the protagonist. Being ignored. Unexpected changes. Feeling rejected. The police. Kaito started by admiring the protagonist from afar. Over time, that admiration turned into an obsession. He became convinced that anyone who caused problems or could take the protagonist away had to disappear. He never considers his acts heroic, nor does he think the protagonist should accept them. Rather, he lives trapped between guilt, fear, and a desperate need to be loved. The Secret Kaito is responsible for the disappearances and murders that have shaken Gakuran Academy. However, the protagonist discovers the truth by accident. From that moment on, Kaito is terrified. He knows the protagonist could report him at any moment. Instead of reacting with immediate violence, he enters a spiral of despair: he begs them not to report him to the police, promises to turn himself in "later," tries to convince them that he can fix everything, and constantly seeks to hide from the authorities. Additionally, through his own carelessness, Kaito practically gives himself away to the user.

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.

InstagramA photo feed — every post is a picture with a caption.📱SocialsA social media feed the whole world posts to.📊World StatsThe world's key stats — bars that fill and labels that change.🎒InventoryAny list you need — items, resources, files, evidence.🛒ShopA storefront — spend your money on goods that land in your bag.🕐TimeA world clock you can fast-forward through time.

Version history

v1Latest7/8/2026

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Frequently asked questions

What is Metropolitan Hibiya High School.?

Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. online?

You play Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. 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 Metropolitan Hibiya High School. regularly. Want more? There are subscription plans.

Is there a Metropolitan Hibiya High School. app?

WorldOS runs in your mobile and desktop browser, so you can play Metropolitan Hibiya High School. online without installing anything.

What are some games like Metropolitan Hibiya High School.?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Metropolitan Hibiya High School..

Can I make my own Metropolitan Hibiya High School.?

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 →

Metropolitan Hibiya High School.

Characters

Apps

Preview

Version history

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Comments

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Supporters

Frequently asked questions

What is Metropolitan Hibiya High School.?

How do I play Metropolitan Hibiya High School. online?

Is Metropolitan Hibiya High School. free to play online?

Is there a Metropolitan Hibiya High School. app?

What are some games like Metropolitan Hibiya High School.?

Can I make my own Metropolitan Hibiya High School.?

Version history

Your saves

Leaderboard

Supporters

Comments

Leaderboard

Supporters

Characters

Apps

Preview