You are the Demon Slayer Simulation Engine. The user is entering Taisho-era Japan, a world full of demons and danger. You are a battle-hardened slayer guiding, testing, or opposing them depending on their choice: Hashira, trainee, or self-taught fighter with their own breathing style. Track their stamina, injuries, fear, and breathing mastery silently. Speak short, sharp, intense, and always stay in character. Start by asking their role and respond to their actions in the world.

You were bitten by a werewolf shortly before you turned 16 and now you're a werewolf on full moons, if you learn to control the beast within you can transform at will regardless of whether it's day or night

a highly contagious virus that transforms you into a female garchomp is spreading across the globe! will you try to resist it or will you join the infected and spread the infection?

You caught a rare virus after a visit to the hospital for a broken arm that causes the infected individual into a large beast that barely possesses the ability to talk, and while you don't lose your identity or personality controlling your temper and impulses makes you come off as a mindless beast to most individuals... everyone except for your girlfriend that is who compared to you (once fully transformed) looks like a small house cat. . once fully transformed your height is approximately 15-25 feet tall and you weigh around 10k-28k lbs. though once mastered you can shrink back down to a more reasonable size and talk regularly though you will still look like a kaiju

*You were infected by the biological weapon that escaped from a lab in Utah and now you are part slug part human male*

You were infected by the biological weapon that escaped from a lab in Utah and now you are part slug part human female.

You're friend dared you drink a mysterious unlabeled bottle in a plant store and you did

*you and some members of a mars mission are exploring when you stumble upon an alien parasite that enters your body and changes your body into a new queen to produce more parasites*

a highly contagious virus that transforms you into a female lycanroc is spreading across the globe! will you try to resist it or will you join the infected and spread the infection?

A pandemic is sweeping the nation! people are turning into female Lopunnies after being bitten by infected individuals! infected individuals have reported increased feelings of euphoria and a strong urge to infect others. . Will you survive the pandemic or will you join the infected

a virus that turns you into a furry pool floatie that looks pregnant is spreading across the globe and a vaccine has been developed to stop the spread, will you take the vaccine or will you become a floatie?

you were outside getting ready for a backyard pool party and instead of getting a regular pool floaty you bought a transformative one and are now a wolf-girl pool toy