Absolutely

You unceremoniously ravage the angel's snatch, whispering dark promises in her ear. You begin each promise with her name; after all, she told you that her name would carry power.

Thalinya, you will destroy your own kind.

Thalinya, you will become a demon.

Thalinya, you will love every second of damnation.

Licking along her neck to nuzzle her breasts, you make a mockery of making love, your huge dick pounding her cunt.

Finally, your release overwhelms you, and you release your damning seed into her unwilling womb. The virus and your attentions, do have Thalinya moaning like a whore, however, and with your orgasm, you feel hers. As her soul passes through you to hell, you suffer a second, far more powerful orgasm and release another load of black cum into the seraph.

Even as your cock still pounds her pussy, Thalinya begins to change. With her eyes screwed shut, her chocolate skin reddens as her breasts grow slightly, her tits already near perfect. Her hips widen as her waist thins, and her ass balloons out beneath your rutting. Her white wings flare into existence, only to be shredded of their feathers as they become glorious bat-like wings. Finally, as her tail snakes out beneath her to penetrate her ass, and her horns grow on her forehead, her eyes snap open to reveal slit pupils and crimson irises floating in black pools.

"You...were right..., Master," she pants. "Damnation feels fucking incredible!"