The Doctor is Sin VII: Sinnocent

As Chesna continued to ride her face, humping it constantly, Alessa would choke and let out muffled groans at the girl's juices flowing freely over and over out of her sex. She was denied any access to oxygen and Chesna's juices were constantly flowing into her mouth. She could feel her vision faltering as Chesna continued, beginning to feel light headed, but the choking was making her consciousness keep jetting back.

She would constantly tap at Chesna's thigh, as if it were a match and she was submitting to her. All the while though, she was building up a strange feeling, the taste of Chesna's juices were oddly appealing and while she was fighting for air, her body seemed to be welcoming the taste as her tongue would almost reflexively pop out of her mouth, trying to fish inside the girl's pussy for more.

Chesna's eyes widened ever so slightly as she felt the curious probing of her victim's tongue. She let out a huff as her body seemed to release more juices in response, a mild orgasm claiming the doctor. She began to pant softly and pushed her hips down hard, dragging her pussy across Alessa's face as she tried to satisfy the unquenchable desires of her womanhood.

With Chesna releasing even more of her juices into her mouth, Alessa would choke and sputter on them, her legs desperately writhing about on the ground as she fought to get oxygen into her lungs. She could get small gasps of air as Chesna dragged her pussy across her face, but it wasn't nearly enough to give her body what it needed.

Alessa would just continue to lick at Chesna's sex, hoping the girl would get enough before the pussy that engulfed her face would suffocate her and smother her out, which seemed to be about to happen in mere seconds from then.

Chesna would barely notice as Alessa would begin to fade into unconsciousness. She would hump the girl quietly for another solid half hour, rhythmically sliding her sex over Alessa's face, a constant splashing of cum over the girl's face. When she had gotten bored enough to stop, she saw Alessa had passed out and licked Alessa's face clean. She would then get Alessa to cum once more while unconscious and fill up another petri dish before standing up and putting her clothes back in order and leaving Alessa to her devices.