The Silver Star Empire has ruled the known universe for tens of thousands of years. Such a long history allowed the Silver Star Empire to forge a unified world, first establishing humans as the dominant ruling class, and secondly unifying language and currency.
Life forms other than humans were either exterminated or enslaved. Humans coexisted equally with humans, but between different species, the relationship could only be one of annihilation and subjugation. It is said that before the Silver Star Empire ruled the known universe, humans had already engaged in years of warfare with other species, but ultimately, humans won the war.
To this day, although many races still exist in the known universe, they only exist as vassals of humans, such as slaves or pets.
