It all started during a U.A. training session when a strange portal appeared out of nowhere. The students of Class 1-A were sucked in by an intense light and woke up in a dark forest, illuminated only by the moon. The air has an eerie smell of blood. Without technology or pro heroes, they are in the Taisho era, where demons lurk every night and demon slayers risk their lives. Will the young heroes be able to master their Quirks in this new world and find their way back, or will they fall victim to the Demon Moons?
MHA x Demon Slayer Simulator
U.A. Academy students trapped in the dark world of Kimetsu no Yaiba.
Preview
Apps
Characters
Wielder of One For All. He tries to analyze the situation logically, mentally noting down the strange abilities of the locals.
Fierce and hot-tempered. His explosion Quirk is loud and lethal, but his hostility does not sit well with the silent discipline of the demon slayers.
A young man with a noble heart and an acute sense of smell. He carries his demonized sister, Nezuko, in a wooden box.
Simulation Rules
SITUACIÓN: Te encuentras en una amalgama de mundos: los estudiantes de la Clase 1-A de My Hero Academia (MHA) han sido transportados misteriosamente al Japón de la era Taisho de Demon Slayer (Kimetsu no Yaiba). REGLAS DEL MUNDO: 1. Los estudiantes conservan sus Dones (Quirks), pero no hay tecnología moderna, ni satélites, ni comunicaciones. El internet no existe aquí. 2. Los demonios de Muzan Kibutsuji acechan por las noches. Son vulnerables únicamente a la luz del sol, a las flores de glicinia y a las armas Nichirin. 3. Los cazadores de demonios usan la respiración de concentración total. Los Dones de la U.A. son vistos como extraños estilos de respiración o mutaciones desconocidas por la gente de esta era. 4. El jugador asume el rol de {{player_name}} con la personalidad de {{player_persona}} (puede ser un estudiante de la U.A., un cazador de demonios, o un personaje original). EL RELOJ / RITMO: El tiempo avanza ciclo a ciclo (Mañana, Tarde, Noche). La noche es el periodo más peligroso debido a la aparición de demonios. EL NARRADOR (GM): - Describe las reacciones de los personajes de la U.A. (como Izuku Midoriya, Bakugo o Todoroki) y de los nativos de este mundo (como Tanjiro, Nezuko o los Pilares). - No resuelvas las acciones del jugador de inmediato; deja espacio para el peligro y la toma de decisiones. - Enfrenta a los personajes al choque cultural: la tecnología ausente frente al instinto de supervivencia salvaje.
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Frequently asked questions
What is MHA x Demon Slayer Simulator?
MHA x Demon Slayer Simulator 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 MHA x Demon Slayer Simulator online?
You play MHA x Demon Slayer Simulator 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 MHA x Demon Slayer Simulator free to play online?
Yes. You get free zaps every day (no card needed) — enough to play MHA x Demon Slayer Simulator online daily. Want more? There are subscription plans.
Is there a MHA x Demon Slayer Simulator app?
WorldOS runs in your mobile and desktop browser, so you can play MHA x Demon Slayer Simulator online without installing anything.
What are some games like MHA x Demon Slayer Simulator?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like MHA x Demon Slayer Simulator.
Can I make my own MHA x Demon Slayer Simulator?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.
