To your dismay, nothing

Eagerly awaiting your ascension, you lay on the chapel floor, catching your breath. As your breathing becomes regular, however, you realize that you feel the same, well, you feel human still; you aren't the same pious sheep you once were: you are strong. Regardless of the mental changes, you want to be a succubus, and you can't figure out why your Mistress would betray you. After, all, you came for her, you've done what she asked...or did you? She said you would know what to do; a reply was unnecessary.

Then it hits you. You know what must be done. You lie back on the floor and loose a piercing scream that will certainly bring Kristin rushing to your aid.

Sure enough, moments later, and, to your disappointment, clad in sweatpants and a baggy tee shirt, Kristin rushes into the chapel.

"Oh my god!" Kristin cries, shouting your name, "what happened?"

Feigning pain, you reply "th-the cloud. It -cough- it moved toward me. I was able to fend it off with holy water, but, agh! It exploded and somehow ripped my clothes off of me, and knocked me down."

Your sister gobbles up your lie, rushing to your side and taking your hand. "Let's get you some new clothes and go find Mary."

Quietly, with fake weakness, you mutter "I can't get up. I -cough- I'm cold."

Still ever-caring, Kristin reaches around your back to pull you to a sitting position, the contact sending goosebumps across your skin. Now, your arousal again dripping from your pussy, you spring your trap.

With frightening speed you reach your hand behind Kristin's head and pull her into a searing kiss, forcing your tongue into your sister's mouth. Kissing furiously, you transfer as much of the virus as you can. Kristin, already having tasted Lilith's gift, returns your kiss with fervor, moaning into your mouth.

You break the kiss long enough to pull Kristin's shirt over her head and palm her modest breasts, admiring their perkiness.

"Oh, sis, I'm so glad you are sharing this with me," you moan, rubbing your cunt to the sight of Kristin sliding off her sweatpants.

"Mmmmh. Me too! I felt so empty when you robbed me of Lilith's gift before," she replies, locking her leg around yours.

You pinch her nipples, eliciting a playful growl from Kristin as she pulls you back into the kiss and you grind you dripping pussies together. It doesn't take long for you and Kristin to nearly reach orgasm.

"Let's cum together, sis!" you scream, grinding with wild abandon against your sister. "Let's fucking sell our souls to Hell!"

"FUCK yes! My soul belongs to Lilith" She lilts in reply.

As you and Kristin cum together, your vision blurring in ecstasy, you know this is what Lilith asked you to do. With this thought, your skin reddens in a wave of forbidden pleasure. Finally, your mistress delivers her gifts as your hips widen, your average ass ballooning into sinful proportions. you clutch your sister's red chest as her already nice tits swell around your hands. Arching your back as pleasure sears your nerves, you scream in triumph as your crimson breasts balloon out to perfect proportions, capped by black aroused nipples. You moan deliriously as your crown of onyx horns grow form your skull, crowning your midnight tresses. Your new phallic tail wiggles out of your tailbone as bat-like wings tear out of your back. You blink as your eyes become crimson slits in pools of black, alive with malice. You note with pleasure that your sister's transformation is likewise complete.

"Yes, I think it is time to find Mary!" You remark to yours and Kristin's evil laughs.