The Keeper's World system, a star system, existed within the Outer Rim Territories. Specifically, it was the home system of Keeper's World.
This uncharted star system, known as the Keeper's World system, resided within the Sprizen sector. Its most significant feature was the planet Keeper's World, a world boasting a temperate environment conducive to supporting life. The Keeper was responsible for the artificial creation of Keeper's World's environment.
A war predating the Galactic Civil War engulfed the Keeper's World system, devastating it and rendering its main planet unfit for habitation. As a result of this conflict, the spacefaring race inhabiting Keeper's World abandoned the system, entrusting The Keeper with the task of restoring their planet in anticipation of their eventual comeback.
During 0 ABY, while an Imperial fleet was on patrol in the uncharted system, a Rebel scout craft accidentally entered their zone due to a hyperdrive malfunction, triggering the Battle of The Keeper's World. Throughout the battle, the Imperial commander overseeing the fleet mistakenly concluded that Keeper's World was dangerously unstable. Consequently, he advised the Imperial Navy to avoid the Keeper's World system in the future.