The rule of two (Starwars x high school dxd)

Prologue

A long time ago, the devils had an ancient ally that shared their hate, anger, evil, and ambitions. They were known as the sith. These humans found an ability to manipulate the flow of natural space in order to gain power without the assistance of magic, unlike their supernatural counterparts. This new supernatural flow of space was dubbed The Force by these early "force-users", as it acted as a counter law to the natural forces and laws of science and physics. It wasn't long before temptation seeped into their pure hearts and corrupted them into using their new gifts only to help themselves and to crush those who tried to take it away from them. This meant that they branched out into many different parts of the world to further their strength and to show the rest of the force-users who was best. Each trained many other humans to use this power so they may carry on their ways and to defeat the other force masters. Decades went by as the different force factions kept fighting each other until there was only one of the original force-users still alive. He rallied all the other students and the factions became one, which he he then dubbed the sith faction. Under the rule of one sith master, the new faction thrived and became more powerful then the original group ever anticipated. They then sought out their own unique weapons they would use against their enemies, and would stumble upon a material that suited their needs. Kyber was discovered and they soon put it to use, created a sword out of pure energy they called, lightsabers. All sith wielded these energy blades that were seemingly unstoppable. But not just that either, they built other weapons with Kyber as their source too, like rifles, pistols, cannons, and much more, in order equip the masses of soldiers that didn't have ability or potential to use the force and become sith. By this time the faction had become its own empire in a large section of the underworld and earth, the bases on earth being of a human alias. The future of the sith was secured, that was until.... The war.