A Bloody Baptism

You can almost hear a voice telling you to stop and return to the crypt but it is deafened by the scream of your thirst. You practically pounce onto the nearest succubus and drink everything you can. The other succubi presses up against you and the two of them do everything they can to stimulate you sexually as you drink. Tongues, fingers, and tails invade any orifice they reach, your dress is torn away for better access to your body and hands grab at and play with your breasts. As you grow more worked up the heat builds, you feel like you're going to explode. It builds and builds, finally you reach your peak and cry out as you orgasm. A glow erupts from the ground in the shape of a pentagram and you feel something flowing into you.

"Embrace your rebirth." One of the succubi whispers into your ear and that trickle of something flowing into you becomes a torrent. The heat suddenly vanishes, replaced by a sense of freezing cold - and it feels good. You feel any lingering humanity within you die, your soul embracing the demonic instead. Your watch your skin become even paler, taking on a slight blue tone. You can feel a small pair of horns push through your forehead and hair, you let out a loud moan from your now free mouth as you do and you feel all your teeth change to razor sharp fangs. The succubi draw away from you and leave you sitting on the floor as your transformation finishes, the air and floor around you growing cold and you can see your breath as you slowly exhale.

"What a pretty little thing we've made sister, I wonder what we should call her?" The two succubi look at you like a darling child, but your attention is drawn to the people chained to the walls. You stalk towards one of them, you feel thirsty again but now there's something else gnawing at you as well. You're upon a man in a flash, messily biting into his neck with your fangs, blood rushing down your throat. It still tastes good but you also feel yourself feeding on something else from him. His body withers and you realize you're not just draining his blood, his life, but his very soul. Before long he's nothing but a withered bag of skin and bones, not a speck of life left in him. A hand gently lays itself on one of your shoulders.

"There's nothing wrong with feeding your hunger, but perhaps a little restraint would help?" You almost want to strike at the succubus by you but as that hunger that had seized you fades you realize she has a point, you'll run out of food fast if you devour them all like this. You turn to the succubus behind you, the two of you lock eyes before kissing deeply for what feels like an eternity before separating. "Of course these humans are for you and us to do with as we please."

As if to prove her point you see her sister succubus in the process of fucking a different prisoner. You lick your lips as you look around the room, the captives would make wonderful snacks...or servants.