A boy who awakens his memories of his past life wakes up to find himself facing a "zombie crisis." Is this some kind of American variety show world, or the world of Hunter x Hunter?

So the first thing to do now is to escape this city.

Question: Beneath the starry sky, there stands a beauty. Her long black hair flows like eternal night, her bright eyes shimmer like the stars, her immense magic makes the world tremble, and her unparalleled beauty compels all beings to bow before her. Who is this beauty?

“That’s right, it’s me, the Queen of Witches, Dorothy!”

In her third year living in this steampunk world, Ciel gained the ability to simulate both the past and the future.

These simulations turned into a game where she could act without restraint, and after countless trials, real life became a replica she could navigate as though speedrunning it.

Churches, potions, mutations, the Old Gods, witches, sealed artifacts… none of these have anything to do with Ciel. She’s just an ordinary girl who wishes for a peaceful life.

She just happens to be particularly skilled at snuffing out danger before it even begins.