All-Worlds System Supplier

In the Sword Dynasty, I build a Grandpa System for a street thug, helping him become the greatest swordsman in the land!

In the apocalypse, I build a supply exchange System for a greasy man, helping him create his very own, ahem, world!

In the future, I help an artificial intelligence awaken and describe to it the human sustenance program;

An escaped convict! A mass murderer! Or perhaps a silent, ordinary lamb!

There's always a System that's right for you!

Why are they all villains?

Villains are great!

The best ones are those who keep sacrificing their own worlds!

Otherwise,

how could I save my own world?

Ahem?

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.