Maybe I should've expected this one

Roza took a deep breath. "All right. I think I know what I want. Is it okay for me ask for two things, though?"

I shrugged. "Sure thing. You smoked me pretty handily after all."

"Can you give me the ability to control my cycle and all that, then?"

I gave her a blank stare for a moment, then collected myself and willed it to happen. "Um, yeah. It's done. Your cycle happens whenever you want it to, however you want it to, all that jazz. Have fun?"

Roza grinned. "Great. For my second one, I want you to make it so I'm irresistible to whoever I want."

I paused for a moment, thinking about how to achieve that, then granted her the Normalcy boon and used Flesh Sculpting to fiddle with her sweat glands to produce pheromones. "There you go. That should work for you. You're going to be awfully horny whenever you get sweaty, though, I'm warning you."

Roza flushed a little, then looked at me nervously. "You... you did it?"

"Yeah, why do you ask?"

She licked her lips, and I realized she was staring at my cock. "Well, we should check to make sure it works, right?" A hand reached out and began stroking me through my sweatpants, quickly bringing me to full mast. She slipped off the shorts she'd been wearing and sat on my waist, rubbing herself against me through my pants. I could tell she was getting increasingly hot and bothered by the minute, the thought of me fucking her testing her willpower more and more as she felt the length of my cock strain against my pants. She began rubbing her pussy against my bulge, already beginning to soak through the fabric as she began moaning, covering her mouth with one hand as she used the other to play with one of her breasts. I pulled the other breast to my mouth and began licking and suckling, noting with amusement that the changes I'd added had already taken effect as I began tasting warm milk in my mouth. Roza gasped in surprise and pleasure, then lifted one of her breasts to her own mouth to get a taste herself, still dry humping me as if her life depended on it. She looked down at me desperately "Do you have any condoms?"

I shook my head, doing my best to look disappointed. "No, sorry. I don't suppose doing it raw is an option?"

She was silent for a moment. "Fuck. I really really want to say yes, but I really shouldn't. Even if all your 'magic' is real, it still isn't a good idea for me to be taking risks like that." She bit her lip as she continued to hump me, the desire for cock clear as day in her eyes.

Finally, I took the initiative and slipped my pants off, letting her feel me directly against her drenched pussy, her juices soaking my dick immediately as I raised an eyebrow at her, daring her to put it in. After freezing for a few moments, resting on top of my cock with it so close to her entrance, Roza's willpower finally failed, and she reached down to put it inside her. As I entered her, she let out a low moan, reveling in the experience of being filled up so completely. I could feel myself bottom out against her cervix after about inserting about 2/3rds of my cock, and changed the shape of my cock so that its circumference also stretched her out just enough to drive her crazy without hurting.

She screamed in pleasure, thrusting her hips against mine as she tried desperately to get more inside herself, fucking herself silly on my engorged cock that I was actively working to stimulate every tiny part inside of her. Each time she sat down, I could feel myself impact her cervix, pressing against it like a little arousal button, making her gasp in pleasure. Not that I wasn't enjoying myself either. I was using orgasm control to make sure that I wouldn't cum till she was satisfied, but I could tell internally that if it weren't for me manually stopping myself, I would've already done so several times. As Roza continued to use my cock as a glorified dildo, I began playing with her breasts again, milking first one then the other, squirting the warm dribbles of milk into my mouth as I made her tits a bit bigger, hanging a bit heavier. Roza noticed the changes and opened her mouth to ask a question, but then I let go of the orgasm control for the both of us, and she arched backwards as she came, my seed filling her up to the brim and leaking out of her pussy, pooling in my lap before dripping onto the bedsheets, soiling them.

Breathing heavily, she looked down at me, "Wow. That was..." she paused for breath. "Amazing. Is every time like this for the girls you sleep with?"

I smirked, then sat up, tossing her back on the bed as I pulled my glistening cock out of her and slapped it against her pussy as I rapidly hardened again. "Oh no, that was just the start. It's a Saturday night, it's 8:00 PM, and neither of us have anything tomorrow morning. I'm going to fuck you so you can't walk tomorrow morning, and then I'll go a little further for good measure. I've got plenty of cum to still fill you up with, after all. Gonna have to be extra careful not to let any eggs out if you don't want to get fertilized." I tapped my balls to reinforce the point.

Roza's reddened as she blushed furiously, unconsciously playing with her nipples as the thought increasingly turned her on. "You..." she stammered "you horndog. Was this your whole plan? Convince me to come over to your dorm room so that you can seduce me? Fuck me full of your cum so that I'm ruined and have to stay with you?"

I quirked an eyebrow at her. "You wound me, darling. This has all been your choice. The changes you requested, you sitting on my cock. You wanted this. You wanted it all. I'm just proposing to give you more of what you asked for." I tapped my cock against her entrance teasingly. "If you want me to stop, I will. No hard feelings."

She glared at me now. "Oh yeah, sure. Play hard to get after showing the girl the time of her life. Don't you fucking dare sTOP. OH FUCK DEAR GOD YES OH FUCK OH FUCK ME YES FUCK MEEEEE." Her argument trailed off into cries of pleasure as I interrupted her the moment she asked for more, shoving my cock fully down the length of her twat and dialing up her internal sensitivity as I did so. Her legs wrapped around me and locked tensely, barring me from slipping out of her more than halfway. Not that I wanted to. I was having far too much fun enjoying the different faces she was making as I worked on fucking her senseless. First her mouth opened, increasing the volume of her screams that I'm sure we would've gotten an RA called on us if I wasn't on a party floor with the entire football team on another campus. Then her eyes began rolling back into her head as her eyelids partially closed, unable to stay focused under the onslaught of pleasure attacking her lower hole. By this time my bedsheets were well and truly soaked, and I was quietly glad that I'd thought to purchase and add a mattress cover to protect it from getting wet too. I was fucking Roza in a puddle of her own secretions. Her neck gave out next, no longer trying to keep herself even vaguely focused on looking at me, her head lolled over to the side with a somewhat vacant expression.

"Roza?"

"Mmmgh?"

"All right. Just wanted to make sure that you were still doing all right."

"mmmGHGHGHG?!"

I slid my full length in her, lengthening her insides so it could fit as I bent her legs up so her knees were by her ears, then came inside her a second time, releasing my control of her desire so she came as well, her legs trembling in my arms. Slowing the tempo for a while, I enjoyed the feel of the inside of her pussy, now thoroughly coated in my cum before I flipped her around and placed her face down on the bed, still gently fucking her but now in doggystyle. She let out a muffled moan into the mattress as I did so, prompting me to pick up the pace again. Soon enough, Roza was once again screaming in pleasure as I fucked her, though at least this time I wasn't likely to annoy my downstairs neighbors. The poor girls had probably been hearing different people having loud sex the past two nights. I should pay them a visit at some point.

My fucking of Roza continued into the wee hours of the morning, before I was finally spent, the lack of sleep catching up to me as we both fell asleep on a pair of partially soaked towels that I'd hastily put down. As I went to sleep, Roza's limp form moaning peacefully in my arms while I absentmindedly rubbed her clit, I reflected on how my life had changed so drastically over the past three days.