Full corruption

Let’s not do half work. After all, you can always impregnate her later. You start collecting corruption energy into your balls and charge up your sperm. In the meantime, you place a hand on one of Angelica’s milky white tits and start massaging it. Angelica opens her mouth and starts moaning again.
“Do you feel it, Angelica?” You ask.
“Y-yes.” Angelica stutters.
“That is what sex feels like.” You continue.
Angelica nods and says, “Uhu.”
“Doesn’t it feel good?” You continue.
“It … does.” She replies.
“How good?”
“Very good.” She moans.
“Do you regret missing out on it?”
Angelica nods.
“Imagine you are part of a religion which doesn’t deny this to you.” You suggest her. “That you could be a nun while at the same time be able to fuck any time you want and as many times you please.”
“On the altar?” Angelica asks.
“Everywhere you want.” You reply. “Your room, the showers, the refectory, …, and yes, also on the altar.”
“I … I’d like that.”
You quickly grab the vibrating egg, turn it on and place it back against Angelica’s pussy.
“Aaaaahh!” Angelica moans as her body starts to writhe. “Yes! Yes, I would! Oh my god!”
“Don’t call for god, Angelica.” You correct her. “He isn’t interested in you. Call for me instead.”
“P-please, my Duke. M-make me part of your c-convent.” Angelica moans.
“Don’t call me Duke. Call me master.”
“Yes! Master! Please! Accept me, master!” Angelica begs as her wings start flapping.
You pull the vibrating egg away from her clit and put it in her left hand.
“Here, make yourself cum.” You say.
Without hesitating, Angelica shoves the sextoy back against her clitoris. As she nears the brink of orgasm, you place both your hands on her hips and start fucking her harder. In mere seconds, Angelica orgasms for a second time on the altar.

When her orgasm passes you pull out and flip her around. Now with her chest bend over the altar, you slide back into her pussy and fuck her from behind. The chapel is filled with the sound of your hips slapping against her butt, the buzz from the vibrating egg and moans from both a half-devil and a half-angel. Your second corruption spell is soon ready, but you want to wait until Angelica orgasms again. You make certain to keep your orgasm at bay until you see her black wings start to flutter. That is when you speed up your thrusts as if you are trying to fuck the last bit of purity out of her body. You also grab a handful of her hair and pull on it. Not hard, but hard enough to pull her head back. Then you and Angelica cum together and your dick fills her with your corrupting cum while her pussy milks you for every drop you have.

After you finish your orgasm you continue watching Angelica. You want to see the horns growing from her head. Instead, the first thing you see is that the black feathers of her wings start falling off. First a few, but after a few flaps, they all let go of her wings, leaving her with two small leathery batwings. Almost like the ones Sariel has, but much much smaller. After that, the horns start growing. They come out of her forehead. Both growing upward quite a bit and then the tips make a small curve backward. To your surprise, another two horns appear, this time from the sides of her head. One left and one right. They quickly curl downward and stop at about the height of her jawbone. Almost like they frame her face.

You take a step back and let your dick slip out of her deflowered pussy. When Angelica turns around, she notices the black feathers all over the altar. She picks up some of them and says, “Are these …?” Then realization sets in and she yells. “My feathers!”
She looks behind her to check her wings and sees they now look like demonic instead of angelic. In her peripheral vision, she also notices her new horns. She places her hands on them and feels her new body parts, then she stares at you with her mouth agape.
“Congratulations, Angelica.” You say. “You are now part of my convent.”
“I see.” Angelica replies. “So that is how it went.”
She then starts collecting all of the black feathers. They are hers after all. You take your phone and send a text message to the other nuns. Shortly after Miryam, Siara, Jennifer and even Talith come with a box and help Angelica collect her feathers. They also congratulate their white-haired friend for having given in to you. Finally, you have the woman you’ve been yearning for. And as a bonus, you also have a harem of corrupted nuns.