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This entire ordeal was highly irrational. You know this. However, there was just something about Oikawa Tooru that caused you to throw everything away. All inhibitions, all sense of self-preservation, all logic and common sense—everything.
Yes, you know that as a succubus, you need to feed on the sexual energy of others.
And also, yes, you know that having sex with fellow succubi yielded zero energy. It only expended energy. In fact, one could even say that was a waste of energy.
So it was completely irrational, for you to be kneeling in front of Oikawa Tooru, for you to have Oikawa Tooru’s cock inside your mouth, and for you to be gulping down Oikawa Tooru’s cum like a man dying from thirst.
Completely, and utterly irrational.
However, as Oikawa threaded his hands through your hair, murmuring, “What a good boy, Tobio. You’re taking my cock so beautifully, Tobio.” You knew exactly why you continued to do all this.
For those words were the last straw—despite not even touching yourself, you reached your climax simply upon hearing Oikawa’s honeyed praise.
“Good boy. Now, turn around.”
And what could you do but obey? You turned and spread your cheeks, feeling the natural lubricant that all succubi secreted drip down your trembling thighs. You hear Oikawa let out an approving hum and you couldn’t help but feel pleased. You were already wet from the very first moment Oikawa walked into the room.
As Oikawa sank into you, as you intertwined your tails together, and as Oikawa continued to thrust into you, hitting all the most perfect spots, filling you up so deeply, there was only one thought ringing through your mind—
There’s no better feeling.
Oikawa Tooru fulfilled each and every one of your base urges, giving you everything that you wanted—no, everything that you needed to feel alive.
Sex with humans was just for sustenance anyway.
But sex with Oikawa Tooru? It was nourishment for the soul.
You needed more. You needed all.
A word falls from your lips, “Please!”
It was more of a gasp, an exhale, but Oikawa managed to hear it all the while.
He paused in his movements, and then asked softly, “Please, what, Tobio-chan?” as he tenderly stroked your hair.
“Please…”
Oikawa waited patiently.
“Please… give… it all to me.”
Oikawa laughed. It was small and quiet, but full of affection, and meant just for you.
“You’re so greedy, Tobio-chan.”
But he complied, increasing his thrusts in intensity—making you feel oh so fucking full—gripping your hands tighter, twisting your tails together even further—until you couldn’t even tell where you began and where Oikawa ended—
“Tobio.” Oikawa’s voice cut through your lustful haze. “Can you promise me one thing?”
“A-Anything.”
“Promise me,” He grunted in between thrusts. “That no matter who you’re with,” Another thrust. “That you’ll remember that you’re mine. That no matter who you’re with, your hole is mine alone.”
Yet another highly irrational feeling swept through you—you wanted to scream, to shout, tears rose, and something threatened to claw its way out of your throat. But still, you managed to muster all the sincerity and promise in your body as you gasped out—
“I’m yours.”
Oikawa leaned forward and placed a gentle kiss on your nape. You could feel his smile, even there. “Good boy.”
And there was just something about Oikawa’s words of praise that just managed to draw out the most electrifying outpouring of release, of relief, the sensual exhale of one’s soul—coupled with the sensation of Oikawa’s cock throbbing inside you, as he reached his own bliss?
There truly was nothing better.