"The natural order...?" Logan bit, releasing the strength in his legs while he could only fold over in desperate respite. His mind was forcing him to save what little energy remained, the frantic pattering of his heart's beat against his ribcage so strong that he could feel its reverberations sift into the succubus' skin.
"That's correct." She smiled, lifting Logan off of her by a couple inches. "Us succubi require living energy to survive, but at the cost of the victim's life. It's a cruel destiny—one that we can't control, but I hope that you can keep with you one fact in your death, something that may help you pass on easier."
He grunted at the tightening grip of her hands along his back, twisting skin with enough force to cause his mind to reel from the pain. Her long fingernails caused a violet stream to blemish their cold, purple exterior, cutting directly into his flesh. "Your energy will assimilate into mine, and I will use that to change the world. Know that your sacrifice here will not be for vain."
Silently, Logan closed his eyes, allowing the varying sensations of blunt null to inhabit and whisk away his conscious mind. For a moment, just nothing. Not the typical black one would encounter when they closed their eyes, but real, authentic nothing.
Like someone had been tugging on his chest with a rope, he could feel something within him begin to leave. The freezing cold embellishing his limbs—gone. The many jaggers of pain stabbing into his many wounds—now unknown.
And then, one thought filled his mind.
'Selene, I can't leave you now!'
Like a light switch were flicked on inside his mind, his body had been miraculously reanimated, the indignation in his eyes burning with such intensity that he may well have burrowed a hole directly into the succubus.
"What!?" she bellowed, trying her best to pry him free from her body, but something changed. Before, he was just a weak human who knew nothing of the strength of spiritual beings or the Gifted. 'Powerless' was the only way to describe his existence.
But now, she could feel it; the way the mana keeled at his presence, begging for its leave. It banged against his existence, almost removing him from reality. But he fought back, assimilating the ambient particles directly into his mana core, bending it to his will and using it to vitalize flesh and revive failing organs. At this moment, he may have even possessed more mana than—
"I'm going to die as a sacrifice? Says who?"
With a single thrust along his crotch area, his mana flared vigorously—almost as much as his dick—flinging her arms back to her sides. The legs she'd used to keep him in a leg lock just barely held on, although the skin most proximal to his was tarred to black.
She winced at the pain, flicking her nose at another sensation. His dick, it was encroaching her deepest parts again!
"What are you doing... did you forget what I am? You'll die if you continue hammering me like that!" Even though she was talking, her words could barely be heard through the sound of pounding flesh. Her ass jiggled intensely at each impact between her ass and his cock, going red from the impulse.
On the other hand, his dick stood so strong that it begun to bulge out through her stomach, making itself clearly visible as it moved in and out. Though she'd been trained in the art of sex, she couldn't help but moan uncontrollably, reaching for Logan's chest with her hands.
But he refused.
With a simple smack against her wrists, he continued thrusting wildly, watching as she took him all the way to his base. His dick was seething at the intense stimulation entering his core, the lower part of his sternum now branded with a purple insignia. He didn't know what it was, with a single 'tail' stretching out from the base of the mark, two little wings extending from the sides.
Now, his hands had been contorted to match his desire, his fingernails purple and his skin slightly pink from the torrents of mana rushing through his veins, giving him the strength to retaliate.
Even his vision, which had gone black just moments prior, was now afflicted with a pink aura that bled into the very world itself. He could watch each particle of mana float in the air, an insane amount aggregating within the succubus' mana core, positioned a few inches inside her chest, behind her sternum.
"What are you...?" she mused, throwing her face left and right as the willowing stimulation continued to leave her speechless. A mark on her chest—exactly where Logan's was—dipped into a blinding show of fireworks, sending boundless amounts of mana sprawling into the atmosphere.
At least, that's what it seemed to be doing. As the mana exited her core to wander aimlessly, his own mark thrummed its own tune, reacting to the mana with its own fireworks. This time, however, the mana that ejected from his core served a different purpose, guiding the ambient particles directly toward him. He felt how, with each thrust, his limbs grew stronger and stronger, her face falling more and more.
"Wait, please, stop! I'm dying!" she pleaded, white filling her pupils the more her energy transferred over to Logan.
On the other hand, he didn't even recognize her words. All he could think about was his newfound manipulation of mana.
Strength, power, speed. All components of the human body, emboldened by the very energy that powers the cells. But there was a secondary source of energy—one that gave strength to all who called themselves 'practitioners of the magical arts.'
This power was one that he lacked, but now—
Logan's tip bulged, the veins running through his dick reacting to the sudden need to release. "I'm going to cum!" he proclaimed, gripping onto the sheets tighter.
With a slam so powerful that it sent an insane horizontal flash of light all throughout his room, he felt the air warm, reacting to his power. Hard drywall took a knee to his presence, getting reduced to splintering shards of mineral and long spiderwebs of cracks.
His room had been completely decimated as well, everything that came into contact with the flash getting cleaved cleanly into two.
For a moment, Logan could only wallow in the amazing power, feeling his chest rise from how much control he felt. On the other hand, the succubus below had been reduced to a small husk, her eyes drained and her blood thin.
He looked to himself, smiling at the powerful flashes of pink, but then the world began to turn black. Or rather, his vision did.
In a single moment, his eyes rolled back into his head, all the conflicting webs of thought churning into a single thread. He fought desperately to stay awake, but to no avail. And like that, he fell unconscious atop a battlefield of ruined silk and polyester.