Everyone knows Regulus Black and Evan Rosier are close. Some would argue too close. They are fanatics, constantly doing the darkest, vilest, most evil things. They're unrepentantly racist towards anyone of lesser magical status, avid sadists, and genuinely up to their necks in power and pleasure. It becomes a madness, a thirst for blood and a scramble for more power, more purification of the wizarding world. As they quickly become the Dark Lord's favorite assassins and generals of genocide, Regulus and Evan start to feel the significance and corruptions of their souls and magical cores, they are soldiers, executioners and they are both hopelessly, desperate obsessed with one another, and darkness always plucks at their relationship, shared competition to kill the most, to be the most ruthless in battle, to be the most depraved, will they win the war and secure the future for the Pureblood hierarchy, or will obsession, greed, and lust break them?