I was in my room studying when there was a knock on my door.

"Rosalynne! It's me, Andrea. Let me in!" She sounded weird, like maybe she had a cold.

I opened the door, and someone slipped inside my room, but it was not Andrea. His jet black hair matched Andrea's, although it was a guy's shorter cut. The guy looked like her brother, except that Andrea does not have a brother; I've met her whole family. He was wearing her clothes, but they did not fit his trim, athletic male body.

"Rosalynne, someone must have finished a set of my cards!" Whoever this was sounded so excited!

Cards? Oh my! Maybe this was Andrea! "Already? Who did it?"

Andrea, or maybe Andre for now, said, "I don't know! But they must have been collecting since I started, right? And look what they did to me! This is going to be so much fun!"

Andrea dropped her pants and pulled her shirt up, revealing the muscular abdomen of a male athlete, and a fairly large, mostly hard penis. Holding her shirt up with one hand, she waggled her dick up and down with the other, and it finished getting hard. It wasn't the biggest I had seen while working in the clinics, but it was a little bigger than any I had personal experience with.

Andrea shook her head, "It was hard to run over here with this big thing in my pants!"

I smiled at Andrea as I drank in her temporary new male body, "That's what guys always say."

"Yeah, but now I know it's true! So, what do you say?" It was really weird to see someone who looked so much like my friend, who was my friend, as a guy. He grinned at me with such a sexy smile.

"What do I say about what?"

"Do you want to try it out? I could be like this for a couple of days before whoever completed the set calls for me..."

I glanced at the book I had been reading, and back at my now very sexy male friend. I started undressing. "That sounds like a great idea!"

I've been at the University for almost four years, studying healing. Like most, I apprenticed with my family when I was growing up, but came here for advanced training and to be exposed to new experiences and techniques. That was the usual way of it for all of the colleges of the University, be it the scholars, the wizards, the bards, or the military cadets. We almost all started training at home, then would finish here with a strong interweaving of disciplines. Of course, most of the attendees at the University are from the upper classes; the peasants have to use their children's labor on their farms and businesses, so those kids don't have the chance at enough schooling to be able to pass the entrance exams. The University is challenging and demanding in its own ways, but it isn't hard like the lives of the peasants. We at least never have to worry about where our next meals are coming from if the growing season is bad.

In addition to the primary goal of educating our future leaders, a secondary goal of the University is to make sure that people from all over the country mix together outside of their usual social circles. Most of the classes for each discipline are separate for obvious reasons, but there are certain basic classes like history, math, and languages where the colleges mix. I met most of my friends in the other colleges in those first classes, or in the cafeteria. Everyone mixes in the cafeteria.

The dorms are not mixed between colleges because our schedules tend to be dissimilar. Students in the military college, in particular, start their days at ungodly hours. That doesn't mean that the different colleges don't mix in the dorms, but that is usually unorganized, and usually happens after dark. Most of the dorm rooms are really small cells with barely enough room for a bed, a desk, and some storage.

Andrea and I quickly got naked. We've been naked together before, when swimming in the river, or bathing, or whatever, but this is the first time she has been in that sexy male version of her body. She is a super sexy guy, with tanned skin and muscles on her muscles. His muscles? Whatever. Andrea laughed, "This is so weird, I've seen you naked lots of times, but this time you seem way sexier to me! You are so attractive, and oh so curvy!"

"Well, thanks, sexy! I guess that means whoever finished your cards is probably also a woman, right? If they were a guy, they wouldn't have nudged your preferences, right?"

"I'll find out soon, I hope!" Andrea started reaching toward my breasts, but slowly stopped, and a look of confusion spread across her face.

"Oh, No! I can't touch you sexually! You aren't playing the game!" Andrea looked so sad, and continued speaking, "I forgot, once a set has been activated, the player can only be active with other people playing the game."

"I've been planning to start playing anyway; can you deal me into the game?" I really had been thinking about joining in, I wasn't just joining to get Andrea-as-a-man to fuck me.

"Oh, yay!" Andrea turned around and bent at the waist to reach into a pocket in her discarded clothes. I took the time to admire her newly male ass; it was all tight and muscular. Her girl ass always attracted a lot of attention from people who like girl butts, but this male ass looked much better to me.

Andrea pulled nothing out of the pocket, but as she turned toward me, I could see her magical deck of cards had appeared. She sorted through and selected seven of them, placing the rest of the deck on my desk and turned back to me with the cards fanned out. "If you want to play the game, pick a card!"

I selected the card all the way to my left and pulled it out. I glanced briefly at Andrea's smiling male face, which was still so weird, and looked back down at the card I had selected. Except it wasn't a card any longer, it was a packet of cards wrapped in a magic seal.

"OK, if you open those cards, you are bound by the magic until such time as you destroy your deck. Do you still want to play?" Even I, with my very limited magical awareness, could feel the magical power gathering. I grinned and ripped the packet of cards open. As the wrapper dissolved into confetti, I felt the magical enchantment wash over and through me, making subtle changes immediately. I obviously can't tell, physically, that I just became warded against pregnancy and sexual diseases, but those are the major benefits of joining the game. The other, of course, is the promise of lots of hedonistic sex.

Andrea-man slipped in close and slid her hand around my back to rest lightly on my far hip. "What did you get?"

Most of the cards were pretty boring, just arms and hands or legs and feet. I also got three special cards. One was of Andrea's feet. When I first looked at the card, it was just a plain image of bare legs and feet, but as soon as I looked at the image, the card changed and Andrea's name appeared at the top.

"Hey, that's the start of your first collection! Are you going to try to collect me?"

"Of course I will, Andrea, I want to try both versions of you!" That was a weird thing for me to say; I had never been sexually interested in girl-Andrea before. Maybe the game was already influencing me, too?

Everyone knows about the game: if you collect all the cards from another player's set, you get to claim a sexual favor from them, which is what had just happened to Andrea. Although she didn't yet know who had been collecting her cards, she would soon feel the tug of their call. Once someone collects a complete set of cards, they've got three days to claim your favor or the magical offer expires, as do any cosmetic changes the collector chose.

The second special card was of some guys' broad shoulders and ass; they looked super yummy. Based on the musculature, he is probably one of the military cadets. I hope I can figure out who he is! Those guys are supposed to be really good with the sexing since they are so athletically active.

The third special card was shiny and had a really attractive girl back and butt. I didn't recognize it, of course, but as soon as I looked at the image, the card changed, and my full name, Rosalynne Lewin, appeared on it! It was my own super sexy girl butt!

"Oh, Rosalynne, I didn't know you liked butt stuff!" Apparently, cards that are shiny indicate something special about the player.

I blushed because, as far as I know, I don't like butt stuff; I've never even tried that, but the game seemed to indicate I would like it. With the disease resistance that comes with playing this game, though, now is the time to find out!

"Ahh, is that something you want to try? I'm game if you are." I breathed into Andrea's neck as he was standing so close, and they smelled so good. Like the flowers she usually smells like, but with a strong manly musk. So hot.

"I just want to play with you first," Andrea whispered as she tickled my cheek with one hand and nuzzled into my neck, kissing it gently. She had to bend over to kiss my neck, even though she isn't usually taller than me. Her other hand traced up and down my back, sending shivers everywhere.

I was running my hands all over Andrea's muscular body as well, until I grabbed onto her penis. It was thicker and heavier than any that I had ever held before. It must have softened a little since she first waggled it up and down in front of me, since it wasn't completely hard when I started stroking it. Her dick quickly finished firming up as I stroked it.

We stood there next to my bed for a while, kissing and touching one another; it was lovely. Eventually, Andrea took my face in her hands and kissed me deeply. As she broke the kiss, she stared into my eyes and asked, "Can you go down on me while I stand here? I want to know why the guys like it so much while standing."

I started kissing my way down Andrea's sculpted man-chest and abdomen. "As you wish, my Prince!"

As I sank to my knees, I got to her hard penis, and I started kissing and stroking it, then I licked around the head. Andrea moaned, and I looked up at her lovely, manly face; when I made eye contact, I saw her nostrils flare.

"Oh, that's why." She looked at me with such lust and desire that it made me smile.

Andrea stroked my hair. "You are beautiful, and that feels so good. You look so good with me in your mouth!"

I've given lots of guys oral satisfaction since you can't get pregnant that way, so I know what most guys like, and I made sure to do all of it to Andrea. I even licked her balls, since whoever fantasized this form for her made them almost hairless. Andrea was standing with her feet apart and her hands moving between twisting into my hair or in tight fists on her hips. Toward the end, when I was forcing myself all the way down to the root, I had my hands on her muscular ass for extra leverage. She threw her head back as she got close, but as she started cumming, she looked back into my eyes and moaned out, "Oh my god, Rosie! Ughh. Yes."

The look on her face as she shot into me made the discomfort at the top of my throat worth it. I kept just a bit of her semen in my mouth as I kissed my way back up her body, and when I got to her lips, I invaded her with my tongue and gave her back that little bit of her cum. She was still breathing hard from her orgasm as she sucked it off my tongue.

"Oh, that was spectacular! You were so beautiful!" I've never had a real guy gush so lovingly after getting them off, so this must be Andrea's normal girl reaction.

I smiled at Andrea. "I'm glad you enjoyed it. How about you return the favor while you recharge?"

Andrea's temporary body wasn't a complete construct; her dick had softened after her orgasm like a normal guy. I've heard of other set completion favors that had the guy not going soft between orgasms. Those guys often looked beat up and exhausted the next day, but I never heard any of them, or their partners, complain about being constantly ready.

Andrea led me backward to the bed, and as I sat on the edge, she made her way down my body as I had with her. She spent a lot more time than I had running her fingertips all over everywhere, gently touching everything. It was different from when normal guys do it; she was more focused on the journey that would lead her between my legs, rather than hurrying to get there. I relaxed back onto my bed and let her play with me. Like a normal guy, she did spend a fair amount of time licking and kissing my breasts and nipples before going further down. She also seemed to enjoy running her fingers through my pubic hair. My thin brown bush must feel different compared to her kinky black hair.

Once she did find her way to my vagina, though, she knew just what to do. She brought me close to the edge a couple of times with just her lips and tongue before pushing me over the edge with two fingers at once. I watched her play with me with a smile, but I lost track of her lovely, manly face when I started convulsing in orgasm.

When I came back to the mortal plane and opened my eyes, Andrea's face was just a few inches above me. She had crawled her way up the bed and was now holding herself above me. Once she saw my eyes open, she lowered her weight onto me and started kissing me. "I like feeling my lover's weight on me, do you?"

I grabbed ahold of Andrea and squeezed her with my arms and legs, "I love it!"

My movements to hug Andrea had adjusted our bodies so that her penis was lined up with my vagina, and I could feel her poking me. She asked, "Do you need a minute?"

I grabbed her head and started kissing her, "No, go ahead, I'm ready."

Andrea used one hand to direct her penis into me, sliding it up and down my slit to get the head lubricated, and then she entered with slow, short strokes. It felt so good to be slowly stretched open. I knew her man-dick was longer than any I had taken before, but I couldn't really tell that while she was fucking me. I could tell that it was bigger around than any other; not a lot bigger, just a wonderful stretchy amount bigger.

Andrea fucked differently than the guys I have had previously. She alternated between long, slow full-length strokes and short, fast strokes at different depths. I especially liked the short, fast strokes when she was almost all the way inside because those mashed my clit really nicely.

I watched her face as she moved inside me; the play of emotions as she worked toward her release was wonderful. The look of joy, awe, pleasure and whatever her eyes rolling back in her head meant all alternated as she moaned in pleasure. I moaned with her as she drove me to the edge and then took us both over. I felt her man-dick pulse inside me as she released her essence.

I saw movement out of the corner of my eye, and I turned briefly and saw both of our decks on my desk. Andrea's deck appears about two inches thick since she has been playing for a while, but I saw it get a little taller as a new pack appeared on top of it. There were now two unopened packs on top of each deck; I got one for getting Andrea off orally, and she got one for getting me off. Then we each got another for giving the other an orgasm while fucking. If Andrea hadn't gone down on me and gotten me off before we fucked she would have only gotten one pack. The game is geared toward everyone's enjoyment, so you get cards for giving orgasms. The only way to get more than two packs from one lover in the same day is for one of the partners to get or give an orgasm to someone else.

Everyone at the college knows about the game, and after a certain age, most people choose to play for a while. The magic doesn't allow anyone underage to join. And once you leave the game by destroying your deck, you can't join again. The whole game evolved from a relationship between a wizard and a healer; they were playing around with magic and sex, and things got out of hand. Eventually, they brought other people into the game, and those people brought even more players in. And as more people joined, the game got more and more complicated.

The most common cards are images of the players' hands and feet or arms and legs. Slightly less common are cards depicting the players' backs and ass or their chest and genitals. The rarest cards are those that show a player's face. Those are so rare in part because you need them to finish a set, but also because they make the players really easy to identify. Normally, new cards are not identified; they are anonymous. Once you see the part of the body depicted on a card bare and uncovered, then all of their cards become labeled with their name. That is why faces are so valuable; they let you easily identify the player and, by extension, all other cards in that player's set. Hands work too, since people rarely wear gloves. It is often super obvious when new players join the game because they wander around the cafeteria with their decks in hand, checking out everyone else's hands. Everyone calls that trolling for players, but really, it is just asking for sex partners.

Andrea and I cuddled and snuggled for a few minutes, but then she got up and grabbed her deck. I reached out to have her hand me my deck, but she said, "You will have to get it yourself; the magic doesn't allow anyone else to touch our decks."

"Oh, right!" I grabbed the two new packs and ripped them open, laughing as I tossed the wrappings into the air. As the wrappings left my hand, they dissolved into magical glitter that disappeared before it could hit the ground. The magic of these cards and decks is nothing less than miraculous. The wizards don't even understand how everything works.

I mostly just got more hands and feet, although I did get a nice full frontal guy, but none of my new cards were for Andrea or me, so none of them were labeled. I did, however, get a face card. It was for an older man, somewhere in his forties maybe, but he didn't look well. He was pale, dirty and unshaven, and on his right wrist there was a manacle and a short bit of chain. That was odd because usually the images on the cards were stylized to be attractive. He was attractive for an older guy, I guess, but I had never heard of anyone wearing chains or looking unattractively dirty in the images. Unkempt in a sexy way, certainly, but this was different. The only thing attractive about him was his piercing grey eyes.

"Andrea, do you know who this is?" I showed her the face card, and she looked at it closely.

"No, but he does look vaguely familiar. But why is he dirty? That doesn't look like the usual style for the cards."

"Yeah, I haven't seen many cards, but I didn't think so either." I was looking at Andrea and watched as her penis suddenly got hard. I looked up into her eyes to see that they were a little glazed over.

When her eyes cleared, she glanced down at her hard dick and smiled, "Well, I'm off to the scholar's quarter! I still can't tell who is calling me, but I know where she is. And that she is a she. And that she wants me now!"

Andrea was pulling on her clothes hurriedly. "Sorry to fuck and run, but I've got to go! I'll tell you all about it as soon as I can!"