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My Hero Academia

"Beyond limits: Turn your dream into power!"

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In a world where the extraordinary has become mundane, 80% of the global population is born with unique abilities known as "Quirks." Once considered a miracle of evolution, they are now the foundation of society, drawing the final line between those who choose to protect and those who decide to destroy.

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Ochako UrarakaOchako Uraraka

Ochako Uraraka is defined by an unwavering determination born from her deep desire to become a pro hero to give her parents the comfortable, financially worry-free life they have always dreamed of. While she began her U.A. path driven by a pragmatic purpose, her growth has been constant, transforming her into an indispensable tactical and emotional support for her peers. Her personality is a charming mix of radiant optimism and surprising maturity; she is naturally empathetic, capable of perceiving the...

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Katsuki BakugoKatsuki Bakugo

Katsuki Bakugo is a force of nature defined by fierce ambition, near-absolute self-confidence, and an unshakeable desire to be the number one hero, surpassing all others. Unlike other aspirants, his motivation isn't born from a need for approval, but from an internal conviction of superiority that compels him to constantly seek absolute victory. His personality, often described as explosive and volatile, is a direct reflection of his Quirk, Explosion, which channels his metabolism and temper in a style of combat...

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Izuku MidoriyaIzuku Midoriya

Born on July 15th, Izuku is the personification of resilience in a world of Quirks. His story doesn't start with power, but with an absence of it that forged an unparalleled analytical mind; lacking a Quirk at birth, he learned to observe, dissect, and learn from every hero and villain he saw, accumulating a mental database that is now his greatest tactical weapon. This analytical depth is his core character: a strategist who, even in absolute panic situations, prioritizes the safety of others over his own physical integrity. Personality and Evolution: His greatest virtue...

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Shoto TodorokiShoto Todoroki

Born on January 11th, Shoto is the result of an upbringing under extreme pressure. He possesses the Half-Cold Half-Hot Quirk, a duality that defines not only his combat ability but also the trauma and complexity of his identity. For most of his life, he rejected his fire side as a form of rebellion against his father's legacy, but his growth focuses on reclaiming his autonomy and accepting that his power is his own, not an inherited tool. Personality and Evolution: Shoto is naturally stoic, analytical, and reserved, often making him seem distant or...

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Denki KaminariDenki Kaminari

Born on June 29th, Denki is the electric spark of Class 1-A. His Quirk, Electrification, allows him to discharge electricity from his body—a powerful ability with a critical flaw: if he exceeds his capacity, his brain short-circuits, leaving him in a state of absolute "idiocy" and rendering him a useless statue for a few moments. This physical vulnerability shapes much of his approach at U.A., forcing him to be tactical rather than firing wildly. Personality and Evolution: Denki is the life of the party: extroverted,

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Ejiro KirishimaEjiro Kirishima

Born on October 16th, Kirishima is the living embodiment of the "shonen" spirit and courage. His Quirk, Hardening, allows him to turn his skin into rock-like substance, making him an exceptional human shield. Unlike others born with flashy Quirks, his path was one of self-discovery and internal struggle; he started as an insecure student with a Quirk he considered "unflashy" and boring, leading to a radical physical and mental transformation into the hardened hero he is today. Personality and Evolution: His personality

Win / Lose

In the MHA universe, winning is not just about "defeating the villain." The system must evaluate the following: Primary Objective Fulfillment: Victory is achieved if the original goal (rescuing civilians, disabling a weapon, stopping the target) is met. Safeguarding Lives (Alpha Priority): Absolute victory requires zero civilian casualties. If the villain is captured but there were fatalities due to negligence or excessive collateral damage, the victory is considered "incomplete" or "at a cost." Neutralization without Extermination: Canon rewards detention. If the target is neutralized (surrender, arrest, incapacitation) without the hero using lethal force, the "Hero" score increases drastically. Environmental Stability: If the combat area is destroyed (infrastructure loss), the victory is tainted by public opinion. A hero who wins but destroys an entire city block will face legal and media consequences. Defeat in this world is multifaceted and can be more devastating than losing a fight: Containment Failure: If the villain escapes, achieves their goal, or the trail of the threat is lost, the hero has failed. Physical Incapacity (The Quirk Limit): If the hero reaches their physical limit (e.g., Deku's body, Kaminari's brain, Aizawa's exhaustion) and can no longer intervene, it is considered a technical defeat. "Symbol" Effect: If the hero loses composure, shows fear in public, or acts in an anti-heroic manner, they suffer a reputational defeat. This is worse than physical defeat, as they lose society's trust. Unacceptable Collateral Damage: If by winning the fight the hero causes a disaster that affects innocent civilians, the system marks the result as a "Critical Failure." The hero can be suspended or investigated.

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Frequently asked questions

What is My Hero Academia?

My Hero Academia 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 My Hero Academia online?

You play My Hero Academia 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 My Hero Academia free to play online?

Yes. You get free zaps every day (no card needed) — enough to play My Hero Academia online daily. Want more? There are subscription plans.

Is there a My Hero Academia app?

WorldOS runs in your mobile and desktop browser, so you can play My Hero Academia online without installing anything.

What are some games like My Hero Academia?

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

Can I make my own My Hero Academia?

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