Crossover: The Other Shore of the Yellow Springs

There is a group of people with immense power, yet they belong to no era in history. Even so, they are the world's guardians, protecting the many key pillars that sustain the world's development and keeping them from harm as the world progresses. Of course, they are also the guardians of hell. They hunt down monsters and demons that escape from hell to wreak havoc in the mortal world or deliberately harm its pillars. They are mysterious and powerful, yet they are everywhere. Born in the underworld, they manifest in the mortal world through its power. They are called the Yellow Springs Blades. The Yellow Springs are their blades, and the Other Shore their robes. Yellow Springs Blades, Other Shore patterns. They were born in hell. Theme: Cut down all that is vile.