Use the pen on Dagmar

Screw it. I came here to turn her into a skin, so turn her into a skin I shall.

You bring out the pen. "Its about this.", you say, as Dagmar leans in to see what's in your hands.

Click, click, click, click, click. Nothing happens.

"Umm... So what's so.... special about it?" She stares at you quizzically. "Look, I don't have time to waste here. I'm not sure what's gotten in to you, but it can wait till class is over."

She turns to the side to leave, her hand reaching for the door handle when I twist the knob of the pen. The effect is immediate.
"What th-" Dagmar barely manages to react before she deflates like a football with a pin in it. You wince at the horrible analogy you come up with. If a football was 5 foot tall and a girl, it would be offended. As you walk up to skin, your third leg begins to rise, aroused by thought of donning it. To think that the pile of skin and clothes at your feet used to be a human, makes you feel guilty, and at the same time, incredibly aroused. Who wouldn't be? After all, she was your plaything now! You pick up the skin, eager to find out what's in the life of the girl who sits next to you. You strip naked, your rock hard cock now exposed to the air, the tip a little wet.

Examining the skin, you notice that a part of it hasn't collapsed. A short rod shaped silhouette solidly remains in the pelvic region, garnering you interest. Gingerly, you spread apart the flaps that were formerly Dagmar's ass cheeks and gasp. A butt plug! A small one albeit, but a butt plug all the same.

Dagmar, Dagmar, what a naughty girl! You pull it out gently, concerned that it may damage the the skin. However, the elastic manner in which the skin bounced back into its flaccid form as the butt plug came loose reassures you of its durability. You feel the tip of the plug, still warm from its time in Dagmar's anus. You wonder how long she's been doing it, walking around with it, wallowing in the debauched pleasure. You set it aside, you'd be back for it later though!

Examining the skin, you quickly decide to tear a whole in the back. Your stretch apart the skin first, before twisting at the center. The skin spills open, much like a bag of chips. You smirk as the thought passes through you. You begin with your right leg, slipping it in and gasping as the skin began to wrap around it, pulsing and expanding first before shrinking into a distinctly feminine leg. Emboldened, you put in your other leg and pull up the skin around your waist. Immediately your perspective change as you lose a quarter of your height. Your dick, its outline clearly visible through the skin, slowly begins to recede into you belly. A sharp pain between your legs indicates that the skin has made its way inwards, replacing your reproductive organs and genitalia. The feeling quickly becomes pleasurable, and you find your fingers reflexively searching around your new vagina. You look down to see Dagmar's lithe legs and round waist, appearing out of place from where your abdomen and upper body began.

Alright, its time to speed things up. I can't take forever, the professor will be suspicious with both of us gone.

Yo pull the remainder of the suit over your head and drape the skin around your arms and your face, aligning your face and tongue with that of the skin's. A few palpitations later, you open your eyes to find yourself even shorter, and feeling even smaller. The skin had closed around your back, and now, you were presumably one hundred percent Dagmar, in all her naked glory. You hands cup your small but perky breasts, your fingers brushing past your nipples. A electrifying tingle alerts you to their sensitivity, and you let out a small moan.

"Aah~" Dagmar's sweet voice rings out clearly from your mouth. You cover your mouth in surprise. I can't believe I made that sound; so effeminate!

However, your feelings of ecstatic pleasure and wonder are cut short by a pounding in your head. You brace your forehead with your hands. Your brains seems to be preparing for something big. A moment later, a mind splitting palpitation has you on your knees. A stream of memories flow through you mind, feeling alien at first but gradually becoming a familiar, as if they were always there. You now knew two sets of parents, but although it seemed contrary, neither set felt fake. Two separate recollections of life tidily arranged themselves in your mind, sort of like a jigsaw puzzle. Even memories to each other condensed themselves into an eloquent explanation, and you were confident that you were Dagmar, without losing your identity as Lasse. You were now ready to begin your new life.

However, you weren't done yet, you realize as your eyes catch the glint of pink from the corner. Something you'd forgotten in the heat of the moment; Dagmar's little sex toy. Normally, you'd think twice about using something of the sort. But Dagmar's memories gave you confidence. You open Dagmar's handbag and bring out a bottle of lube, preparing yourself. A generous dollop of the stuff is squeezed out, and you stick a finger full of it into you arse, yelping in surprise from the feedback. You twist your finger around gently, spreading the lube evenly before you return to the object itself, which practically drown in lubricant. There's no such thing as too much lube, as Dagmar says. Or thinks, to be appropriate. Gingerly, you guide the tip to your ass, and tenderly push it in, gasping as it made it journey up. Slowing down, you give a little twist and moan as it pops into place. A tight, warm feeling flows through you feel it come to rest. A sense of fullness pervades your pelvis and although you feel weak for a moment, it slowly ebbs away.

A second later, you were back on your feet, rummaging through Dagmar's clothes that lay on the floor. flawlessly slipping into her underwear, clasping her bra and pulling on her slim pants and crop top as if it were a routine task. You pull out a vanity box from her bag, your new memories informing you of where exactly it was. Flipping open the pocket mirror, you retouch your make-up and clean up the smudges expertly with a napkin.

"I have to look pretty for Tristan, after all. " You smile deviously as you realize how impeccable your performance was. No one- not even her parents or Tristan, would know the difference. Oh, the things you would get up to with this body. Your imagination runs wild as you put hands around yourself.

The sound of the clock announcing the hour jolts you awake from your reverie. You slip on Dagmar's heels and try to walk, but lose your balance for a bit. The were a new pair, and Dagmar herself wasn't used to them. Fine, you didn't want it to be too easy either! After gathering up your clothes and stashing them in a corner, you strut out of the storeroom, ready for your class.