After Casey had her breakfast and dressed, she stared at her underwear drawer and wondered if she should take a pair of panties with her just in case. She guessed it couldn't hurt to be prepared, and they wouldn't take up any space anyway. She couldn't take the chance of putting them on before class though. While she could pull off an upskirt pic in class without anyone noticing now, there was no way she could get away with taking her panties off first to do it. She bunched up a pair and stuffed them into the bottom of her bag anyway.

She arrived on campus and parked her bike, then put on her running outfit. It was a perfect morning and if felt good to be alone. After the run, she had just finished showering when the first ding arrived.

"Upskirt"

There was no one else around and Casey only had the towel around her, so without missing a beat she dropped the towel, spread her knees apart, took the shot and sent it.

Ding.

"Nice tits. Thanks!"

Confused by what he meant, Casey checked the photo she had sent and realised she had accidentally angled the camera out a bit and because she was nude it captured her whole nude body! Oh God! He hadn't even asked for that and she had sent it anyway!

Ding.

"Your mission today is to get someone to take a photo of you completely nude somewhere on campus. I don't care where. You have until end of day."

Casey's face suddenly felt very hot while at the same time a chill went down her body. She guessed it was time to find out if her wannabe nudist excuse was going to hold water. Where could she go to get enough privacy so no one else would see though? Maybe under the bleachers at morning tea time? Lunchtime there would be students everywhere on the oval playing sport. Who would she ask?

She finished dressing just as Amelia walked in. Amelia! She would have to be her first candidate. "Who better than a friend right?" she thought.

"Morning Amelia."

"Morning Casey. What's happening?"

"Oh nothing much."

Now was the time. "C'mon just do it Casey and get it over with," she urged herself.

"Listen I have a kind of strange favour to ask..."

"Oh?" said Amelia.

"This is going to sound kind of weird..."

"Yes?" questioned Amelia.

"I mean really weird..."

"Just tell me already Casey! The suspense is killing me!"

"Um... I've been kinda thinking about becoming a nudist and I want to get some photos of me in day to day settings so I can see what I look like. Would you be willing to take a photo of me?"

"Fuck, that sounded completely nuts," Casey sadly thought to herself.

"A nudist! What the fuck Casey! Would your parents even allow it?" responded Amelia.

"Um... I don't know yet, but I want some photos of me before I make the decision to ask them. Will you help me out?"

"Holy crap! Well I guess so. I don't think we should do it in here though. If we get caught with cameras in here we'll probably get expelled."

"Oh no, not here. I was thinking under the bleachers at morning tea time?"

"Under the bleachers? Are you crazy? Someone might see you."

"I thought about that but I think if we do it at morning tea time and make sure no one is looking we should be ok. It will only take a minute or so."

"Well, it's your body and your reputation, but if that's what you want I guess I can do it for you."

"Oh thank you Amelia. This means a lot to me. Please don't tell anyone about this."

"Don't worry. I won't. I'm kind of implicated as well now if you get caught anyway."

Morning tea came around faster than Casey would have liked and her heart was pounding as she quickly darted back to the locker room and put on the spare panties she had packed in her bag that morning. She was so glad now that she had decided to pack them. How could she explain to Amelia why she wasn't wearing any when she stripped off in front of her? Then she considered that the wannabe nudist thing could kind of work for that as well. 'The feeling of freedom' or whatever. She made a mental note to remember that in future if she had to strip off in front of someone and couldn't put panties on beforehand for whatever reason. She felt weird having to think along these lines. As if stripping off in front of someone and pretending it was of her own accord wasn't humiliating enough already without thinking about what clothes she should have on beforehand.

She located Amelia already at the bleachers, and after a quick look around they ducked underneath.

"Are you sure you really want to do this Casey?" said Amelia "It's not too late to back out."

"No, I'm sure," replied Casey "This is the only way I can think of to find out if I really want to become a nudist."

"Ok then... I guess you asked for it."

Casey handed Amelia her phone and after another quick look around she quickly stripped off and took up a position with her back against the bleachers and her hands on her hips.

God she felt awkward. The middle of campus during the day was no place anyone should be naked, least of all her.

Click.

"Do you want me to get a few more in case it doesn't work out?" asked Amelia

"Ok sure!" said Casey brightly, hoping her response sounded enthusiastic but inwardly loathing being naked in front of her friend, or that any pictures had to be taken at all.

Click. Click.

"Ok done," said Amelia.

Amelia handed Casey her phone back and she quickly checked the images were ok and then gathered her clothes up and hurriedly put them on again.

She'd actually managed to pull it off and the wannabe nudist excuse had totally worked! She took some comfort in that as crappy and humiliating as it was to have done such a thing at all.

Once Casey had finished dressing they ventured out from under the bleachers.

"You two ladies. What are you doing there?"

It was campus security.

"Nothing," replied Amelia "We just needed to discuss something privately away from everyone else is all."

"Good old Amelia. That sounded totally plausible," thought Casey.

"Ok then. I hope you weren't smoking or vaping under there were you? You know those are illegal on campus grounds?"

"Eww gross! As if we'd do anything like that. Disgusting habits," said Amelia.

"Ok..." he said with a look of suspicion.

Casey suddenly realised she had minutes to get to class and she still had her knickers on and no time to get back to the locker room to take them off and put them in her bag again. "I bet that asshole texts me for another upskirt pic soon too," she thought. She had no choice but to go to class and try to figure out a way to get them off without anyone noticing, and that turned out to be easier said than done.

She took a seat in the back row and picked a moment during the lesson while everyone was writing and the teacher's attention was elsewhere. Carefully and silently she worked the panties off her hips and down to mid-thigh where they were still hidden by her skirt. So far so good. No one looking. Everyone was still concentrating on their work. Then she feigned having an itch, and with one hand she quickly pulled them down and off. She then bunched them up into her hand and returned upright to stuff them into her pencil case. The only thing remaining was to put her phone onto her lap at the ready in case a text came, which she did and then pretended nothing had happened.

She looked up and saw a boy staring at her. She remembered his name as Greg. He slowly mouthed the words "what the fuck?" to her and kept staring at her with an aghast expression.

Casey suddenly felt her face get hot and that cold chill roll down her body again.

"Oh God! He saw everything!" she thought. "What will I say to him if he questions me? Maybe he won't ask? Oh please let him ignore me after class and go about his business. I don't want to have to explain this to him, or anyone else for that matter. What if he does ask? I guess I'll have to use the nudist excuse again. I can't think of anything else. Oh God I'm going crazy!"

Vibrate.

It was an incoming text from you-know-who and Greg was still staring at her. Casey started to panic. She needed him to look away fast. She tried pretending she was concentrating on her work while watching him in her peripheral vision so she could take the first opportunity to do what she had to do. At last he finally looked away and Casey quickly took advantage of the moment to part her knees and take the shot, but he too must have noticed Casey's movement in his peripheral vision and looked back while she still had her legs apart. Thankfully she already had the shot, and using her pencil case to shield her hands, managed to send the text just in time.

Class was dismissed and Casey quickly gathered her things and headed towards the door.

"Not so fast Casey..."

"Oh Crap!" Casey thought.

"I saw what you did back there. What the fuck was that about?" asked Greg.

He was a fairly rugged and rough looking boy but not ugly by any means. Definitely fit with nice arms. Casey thought she had seen him with the football team a few times and that he drove a nice car.

"I uhh... what do you mean?" Casey replied, as if she had no idea what he was talking about.

"I saw you take your panties off and put them in your pencil case. Are you wearing no panties right now?"

Casey gave him a silent shoosh gesture and took him aside.

"Look it's kind of a long story," Casey started to explain "but they were digging into me and making me feel uncomfortable."

"Oh, where did that excuse come from? That totally works," she thought.

"I'm not so sure about that," said Greg. "Weren't you the girl caught with nothing on from the waist down in the hallway the other day?" he asked with a grin.

"Fuck. I guess it's time to break out the nudist excuse," she thought to herself.

"Look if you must know, I've been thinking about becoming a registered nudist and I like to feel the freedom of wearing as little as possible sometimes to imagine what it would be like."

"No shit?" Greg said, stepping back to allow his eyes to take in her figure and imagine what Casey might look like naked.

"Well I think you'd make an awesome nudist. You should totally do it," he added with a cheeky smile.

"That actually went well," Casey thought with relief. She thought about adding something that would pave the way for her to ask him to be a future photographer on one of her missions but she wasn't sure she could handle being naked in front of a boy. Still, he knew her fake secret now so she could approach him if necessary. In many ways it would be easier than having to explain all this to someone else.

"Maybe I will one day," Casey laughed, cringing inside at the thought of it. "But for now can we keep this between you and me?"

"Sure," Greg replied.

He started to walk away but then turned back.

"Say, are you doing anything Friday night? Would you like to grab a burger or something?"

Casey was slightly taken aback.

"Oh ok. I guess so."

"Great! OK let's swap numbers and I'll call or text you on Friday to figure out what time and whatever."

They exchanged numbers and quickly rushed off to their next classes.

"OMG! I have a date!" Casey thought with considerable excitement, but then her mood dropped as she remembered her current situation. She hoped it wouldn't get in the way of having a bit of fun, at least just this once.

They rest of day passed without incident apart from two more upskirt texts to deal with.

As she made her way to the bike rack she wondered if there would be another stupid mission tonight.

Ding.

"Where is the proof of today's mission?"

Oh crap, she had almost forgotten. She quickly selected one of the pictures that Amelia had taken and texted it back.

Ding.

"Well done. Your mission now is to set up a webcam in your room as soon as you get home and send me the link"

"Oh God. Now what is he going to make me do?" she wondered nervously.

There was a webcam built into her laptop but she had never used it before. She hoped it was working. She greeted her mother and then went to her room to study as she normally would. After a short search around her room she managed to find the manual and figured out how to set the webcam up and how to share it with friends.

"Yeah right. Friends..." she muttered to herself.

She texted back the link to him as requested. It was a few minutes before he replied again.

"It's working. The resolution isn't fantastic but it'll have to do. Be back in your room by 08:30 for further instructions"

Casey's heart was pounding again wondering what she would have to do then, but on the plus side at least she didn't have to ask someone to hold the camera for whatever this was going to be.

For now she joined her parents for dinner which was the standard meat and three veg with the usual polite and frivolous banter regarding the weather and current news. In the back of her mind the whole time though Casey couldn't shake the feeling of mounting dread or stop her heart from beating so hard. She wondered if veins were visible on her forehead.

She was back in her room well before 08:30 and took the precaution of locking her door behind her. Whatever she was going to be asked to do, she could be sure it would involve her nudity and it wouldn't be pleasant. She had the thought that she may as well just strip off already but then thought better of it.

"Just wait and see first, Casey," she said to herself.

Ding.

"I see you. I want you to lie on your side on your bed and face the camera. Take your phone with you"

Casey did as she was asked. She looked up to where her laptop was and wished she could at least see the man's face at the other end instead of a blank screen. Then again, maybe she didn't.

Ding.

"Ok, I want you to keep looking at your phone. Surf the web or read something on it. Whatever. I will text you with further instructions."

Ding.

"Don't forget I have the student email list. Each time you hesitate to follow an instruction I will send one random photo from your file to 10 random people."

Ding.

"If you refuse to follow an instruction, I will put Monday's video online and send the link to all of them including your parents."

Casey gulped and her heart sank. She knew this wasn't going to be good at all now with such severe threats. She remembered the photo of her when she was spreadeagled between the two boys again and felt sick at the thought of anyone seeing it, and especially not everyone she knew including her parents. She resolved that she would just do whatever he told her to and hoped it would be over as quickly as possible.

She didn't hear from him again until a few minutes past 8:30.

Ding.

"Keep looking at your phone and take your right hand and start fondling your left breast"

Casey immediately obeyed. It was a fairly tame request for her though compared to other things he had made her do lately.

Ding.

"Keep fondling but start undoing your buttons and work your way to taking off your shirt and then your bra. Keep looking at your phone not the camera"

Casey immediately started following the request. To her horror she was starting to feel that growing ache in her groin again.

Her shirt and bra were now off. Her skirt was now the only item of clothing remaining. She knew it would be next but he had already seen everything she had anyway so she wasn't too concerned. Degraded and humiliated yes. Concerned or surprised no.

Ding

"Keep doing what you're doing but lift up your right knee until your foot is near your left knee"

Casey immediately followed the direction but instinctively dropped her leg again when her skirt fell open to reveal her pantieless nether region. She tried again, smoothing the skirt out so it stayed in place better.

Ding.

"I just sent the first picture to 10 random people. I chose your very first upskirt pic this time. Which one will I pick next time?"

Casey was sure her face just turned white but she did her best not to react and continued her task. At least her face wasn't in that pic and she would be impossible to identify.

Ding.

"Start caressing your pussy area. After a minute or so, lose the skirt and continue the caressing"

Casey did as directed. Now she was completely naked and effectively masturbating for the man watching her. She was disgusted with herself for doing it but she dared not do anything that might upset him further.

Ding.

"Now sit on the edge of the bed and face the camera. Then lay back, spread your legs as far as they will go and continue caressing yourself."

Casey obeyed without thinking after propping a pillow up against the wall. It was only once she was in the degrading position that she realised what she had just done. Her labia would probably be splayed with her legs so far apart and she was probably revealing her open vagina directly to the camera! As she continued stroking her mound, her concern got the better of her and she allowed her fingers to check to see if she was open and creating too graphic a display. She hadn't figured out what she might do if it was the case though. She tried touching the area as nonchalantly as possible and her worst fears were realised. She was indeed open. To her further horror, an involuntary moan escaped her lips at her touch. She was so wet she could feel it on the outside of her vulva and all through her pubic hair.

"My God Casey! Are you enjoying this? Are you actually a slut after all?" she wondered.

The now familiar ache in her lower abdomen had returned with a vengeance and she could contain herself no more. Her primal animal brain had taken over. She plunged several fingers inside herself at once and commenced the furious masturbation technique she had recently acquired. Her conscious brain knew he was watching all of this but she was unable to stop it. She felt the orgasm coming a mile off and it was going to be a big one. Somehow in the back of her mind somewhere she retained enough sense to realise she would probably scream as usual and would need to muffle her cries, but she also knew she would be expected to maintain her position on her back with her legs wide open as she had been instructed. What could she do? In the last moment she was able to think fast enough to use her free hand to grab her other pillow and put it hard over her face. She was just in time.

As the orgasm finally subsided, she took stock of her splayed position in front of the camera. Instinct told her to close her legs again but she dared not until she was told to do so. Suddenly the ache in her abdomen returned even harder. Soon she was repeating the experience for the camera.

As she lay sweating and panting after her second orgasm she could feel the tension building yet again, but she was physically exhausted now so she made an effort to keep her hands away from herself while still remembering to keep her legs wide apart. She couldn't decide if it was more difficult resisting the temptation to get off for him again or just going ahead and doing it. She so desperately wanted to have another orgasm.

Ding.

"You have excelled. Your sister stays out of jail another day. Give me a smile and blow me a kiss then you can turn the camera off. Don't forget your studio appointment tomorrow afternoon."

Casey did as requested and blew a kiss to the camera with a smile. Then, not bothering to cover herself, "what would be the point now?" she thought, she got up and shut down the webcam and the laptop.

She thought about what had just happened. She had royally disgraced herself and she hadn't even been told to do the last part.

"Maybe I am a slut after all?" she wondered.

It was a troubling thought but exhaustion soon took over and she fell soundly asleep without even remembering to put her pyjamas on.