Struggling in a Post-apocalyptic World Overrun by Zombies

[Traditional zombies + building a faction + movie-style + no system + feel-good story + female protagonist]

People are in America.

Roger, reborn, inherited his adoptive parents' vast fortune as soon as he reached adulthood, thus reaching the pinnacle of life without any effort.

But before they could enjoy it for long, they were suddenly confronted with a zombie apocalypse!

He thought it was just an ordinary parallel world, but reality played a cruel joke on him.

The world I've lived in for eighteen years is actually a world from a zombie movie!

Without a system, how will Roger struggle to survive in this dangerous world?

Roger: "I'll never call the system 'dog system' again when I'm reading books! Please, give me a system!"

(The introduction is insufficient; this article will feature numerous movie characters, including those from non-zombie movies, as well as characters from games and the TV series The Walking Dead.)