A/N: Wanted to write this for some time now; been itching to get into writing more erotica stuff, it's a nice refresher.

Do enjoy~

Material For Sensei

Work was never-ending, for Sensei.

Punishing students for infractions, arranging for homework lessons for students to catch-up, dealing with mischief-makers and the occasional assault mech that went crazy due to a prank gone wrong – there was no shortage of things that required his attention. Most of which, frustratingly, was solved with paperwork, phone calls and written notes.

Meaning much of his time in Kivotos, particularly as of late, was spent behind his desk. The phone or video calls were more tolerable, but the paperwork and note-writing most assuredly wasn't. There was only so many times he could type out the same document, starting with 'Dear' and ending with 'Sincerely' before it began to wear on his mind, and just staring at the black text on white paper was beginning to give him a headache.

It certainly didn't help, admittedly, that it was getting late. The sun had set a while ago and darkness had overtaken Kivotos, the twinkling stars spied through the row of paned windows behind him. Many times he stayed up late just counting all the little glitters in the sky, the blue skyworks of Kivotos still rippling over them, forming a hypnotic sight not unlike watching the clouds blow by on a windy day.

A buzzing in his pocket prompted Sensei to snap out of his thoughts, a grunt escaping him as he shifted, one hand patting down his left leg until he found the lip of his pocket, withdrawing from it his phone.

The moment he unlocked it bright light glared into his eyes, making him wince and look away, blindly fumbling with the brightness until it dimmed to a more tolerable level. That done he spied at the notification – an alarm he'd set earlier, in case he stayed too late at his desk. Nine o'clock, it read. Considering he woke up fairly early in the morning to attend to meetings and such, if he went back to his room now that'd give him an hour or two at best before he had to tuck into bed. And while staying up late would help him get through the last few pieces of work on his desk, he was seeing diminishing returns now – earlier he'd gotten through one document per minute or two. Now he was spending upwards of five minutes on each one, constantly losing his place or needing to re-read sections.

Sighing to himself he pocketed his phone once more and looked at his desk. With a quiet grumble he began packing up all the loose documents and put them away in his desk drawers, locking them tight so nobody could sneak in and snoop – not that the files were of any real importance, but privacy was a thing. Once it was all sorted his computer found itself set to standby mode so he could turn it on quickly in the morning and stood up from his desk, arms above his head as he stretched.

''Mn~'' Several pops in his back made him shudder pleasantly.

Gathering up his things Sensei quickly departed for his personal quarters, located on the floor above his office. This late at night walking through Schale was a bit haunting but there was a pleasantness to the solitude, his footsteps echoing and the air nice and cold. He found his room door easily and a swipe of his key-card opened the electronic door, the thick wood shutting behind him soon after, the lock clicking distinctly audibly in the quiet.

His room wasn't anything grand; closer to a small apartment than anything else. Small main room, adjacent kitchenette and with a bathroom behind a door. With white walls and a light brown carpet it was as standard as standard went, but he found it so homely he didn't have the heart to change anything about it. Even if Maki wanted to paint his walls ten times over for her creative genius.

Just thinking about her turned his attention onto his other students. It was late, but many were still up by now... and he was sorely in need of some stress relief.

Sensei shook his head. He couldn't well invite them to Schale this late at night, especially for something like that. With a hum he deposited his bag of stuff by his bed and plopped himself down onto it, the quilt soft under him and the pillows equally as so. For a moment, he just enjoyed the peace and quiet that was becoming increasingly hard to achieve.

But the idle thought from mere moments before came back to haunt him. He was overworked, pent-up and in need of some stress relief. He couldn't invite a student over this late at night, yes... but perhaps he didn't need to.

Pulling out his phone once more he opened his messaging app. He tapped on a group chat, one linked to a couple dozen of his students that he knew, from Hina of Gehenna to Miyu of SRT. Not all of them would be online at the moment he knew – some out of range of signal towers whilst others were asleep or otherwise busy – but past experience told him that many, in fact, would be online.

So he sent a text. [Feeling stressed. Anyone willing to send some pics?]

Fairly innocuous. Innocent, even. But they all knew what he was asking of them – and they were more than willing to provide.

Barely a minute passed before he got multiple private messages from his students. He resisted the urge to open them immediately, his gut twisting with arousal as he unbuckled his pants and pushed them down. Leaving them around his thighs he swapped his phone over to his left hand and slipped his right hand down into his boxers, curling his fingers around his soft cock, kneading his shaft leisurely.

Then he opened his messages tab and clicked on the top one– Neru. It was a selfie, her phone held up at an angle facing down towards her. The top few buttons of her white blouse were undone and her bra, plain yellow in colour, was hanging slightly limp – enabling him to get a look at her bare breast. She was small but the gentle curvature of her tit was arousing to see, as was her perky pink nipple that was just-barely visible against the cup of her bra. An attractive dusting of pink coloured her cheeks too, irritation clear, but the fact she'd gone out of her way to snap such a photo spoke to her true feelings.

He relished the sight even as he clicked off the image, swapping to the next in line – Ako.

As he expected it was a modest photo of her in the office, clearly taken just now given it was dark outside the windows behind her. Hina's office, if he was to guess, though Hina herself was absent. Which was probably why Ako felt confident enough to pull the side of her outfit out, allowing one breast out for him to see, its plump shape so enamouring he could almost imagine the softness of it. The look of disgust and reluctance on Ako's face was just the icing on the cake.

A tap, and he switched to the next message. This one was from Nonomi, taken with a shy smile and that attractively demure look she so often had – the camera held high and her chest pushed out, enabling the camera to get a good look down her shirt at her ample cleavage. Her bust had always caught his eye, ever since she accidentally smothered his head between them and her thighs during a lap pillow, and she knew how to use that against him. Even if it was fairly vanilla, just peering down into her cleavage was attractive.

[Make sure you release it all, Sensei~] Nonomi's message under it read, complete with hearts following it.

Sensei exhaled, his hand gently gripping his dick as he pumped it. Just staring at their tits had gotten him fully erect. His lust, however, demanded more.

Thus with two quick taps he opened the next message. It came from Koharu. Rather than a tit pic it was instead a mirror selfie of sorts; the camera covering Koharu's face but letting him see her otherwise naked self, only a pair of plain white panties to cover her crotch. The outline of her sex could be faintly seen through the fabric, her legs wide apart and letting him see her inner-thighs aplenty, so slim and tantalising as they were. Her stomach, too, was bare as were her demurely-sized breasts, no attempt made to hide them.

He stroked his cock at the sight of her, switching to kneading the top-half as he imagined pulling those panties aside to get at her pussy, either to eat her out or to slide himself inside – the sinful, scandalous thoughts living rent-free in his mind, even if he was never bold enough to say them aloud. Least of all to Koharu's face; she's sooner whack him with her rifle for being a pervert, ignoring the fact she was a raging perv herself.

'I wonder if Koharu would be up for something like that in future...' Sensei pondered as he stared at his student's panty-clad crotch. 'I think she'd be down for it.'

Idly he fired off a text. [Thanks. Would love to take those off of you sometime.]

Hardly the most suave message, but regardless he got the predictable [PERVERT!] response, though that was a given with Koharu.

Flicking over to the next message he found one from Mari. The moment he opened the picture he knew it was one she'd prepared in advance; the skies were still a golden-amber hue and she was in what looked like a confessional booth, the camera presumably resting on something since both of her hands were lifting her skirt up, showing those slim creamy thighs and pair of lacy black panties that hugged her hips, the underwear so sinful looking on a sweet girl like Mari. Judging by her deep blush, she knew this.

[Please feel better soon, Sensei.] Was the attached message.

Such kindness that contrasted sharply with her lewd act. He could almost envision being in that booth with her, pulling her panties out or down and rubbing his cock-head along her slit, teasing all sorts of cute noises out of Mari. Maybe he'd put it in then, feel her clench around him – or perhaps he'd just jerk off against her pussy, cumming on her folds or her panties, just making a mess without risking knocking her up.

Two clicks and the next picture came up. Megu had sent him one, presumably while she was still working since she was in her usual outfit and standing knee-deep in a hot spring, the lanterns nearby giving the whole place a warm amber glow. That detail though was secondary to the sight of Megu bending forwards, one finger in her white top and pulling it out, letting him look straight down into her cleavage. Coupled with her cheeky grin and he found himself stroking his cock more avidly, fully believing Megu would do this in person just to tease him.

[Next time you need a hand, come find me~]Was the message under the photo, as if to confirm his lustful thoughts.

Pursing his lips Sensei pushed his head back into the pillow, groaning as he just looked at Megu's big tits, envisioning pushing his face into them or even just busting his nut all over her chest. The lewd thought lived freely in his mind as he tapped out of her photo and went onto the next message, idly noting the slew of other messages slowly filtering in – no shortage of material coming his way. He made a mental note to save them to his phone for 'later use'.

For now though his thumb tapped onto Iori's. Rather than a photo it was a short seven second video, the screen black – until he tapped on the big white 'play' button. Instantly it showed a mirror selfie of Iori, her legs apart and chocolate thighs free to see. The white panties he caught her so often wearing were absent too, her skirt bunched up to show that – and her right hand was over her crotch, three fingers knuckle-deep in her pussy, actively fingering herself for the camera.

''Hnf... mn... damn pervert...'' Iori breathed, glaring into the mirror as she filmed herself with phone in her other hand. ''Jerk off to this, you creep...''

The video ended shortly after, her husky grunts and small, breathy moan the only noise made before it cut out – a quick tap replaying it. He listened to her breathing, how heavy and shudder-inducing it was, he watched as her fingers jammed themselves between her folds, her nectar gleaming across her digits. She clearly hadn't just sat down and shoved them in, she'd been working herself for a while. Perhaps he'd sent out the text when she was in the middle of things.

Three taps and he opened his camera app, switched to video, and pointed his own phone's camera at his dick as he jerked himself off. He pumped it slowly, his thumb grazing the tip a couple times as he masturbated outright, vividly recalling the sight of Iori fingering herself – the mental image more than enough to keep his hand moving.

After he had a short ten seconds of film he let go of his dick; resisting the urge to keep touching himself as he instead sent the video over to Iori, along with a message; [Tell me when you cum.]

[Fuking creep.] Came the expected response.

The fact she had a typo made him suspect her other hand was a little busy.

Smiling thinly at that Sensei grasped his cock once more, a couple slow pumps gradually building momentum. Exhaling a sharp breath he went back to his list of messages and opened a new one at random. To his pleasant surprise Kazusa had sent him a pic, this one another mirror selfie of her stood in front of a full-length mirror, cheeks painted with a bashful blush and cat ears flattened atop her head. The beige shorts she wore fitted her hips nicely, the camera cutting off before he could see any further than the bottom of her shorts.

Of course his attention was more focused on her chest; her left hand pulling her black t-shirt up to her collar and showing off the black bra she was wearing, pushing up her medium-sized chest. The lacy trim and little red bow on the front made it seem even sexier than it already was, and the view of her taut, flat belly was one that got his wrist working overtime; a groan escaping his throat as he imagined busting his nut all over her stomach. Either after pumping into her, or just jerking himself off to completion from the sheer sight of her.

He tapped out and went to the next message, pursing his lips and kneading his cock in the meantime, not wanting to rush himself to orgasm. Ayane's profile pic showed up and he clicked on the message without hesitation, glancing past the prior messages they'd sent and locking onto the photo she'd just sent. It was a selfie she'd taken a bit earlier in the day, judging by the dim evening light pouring through the dusty windows of Abydos's warehouse, her cheeks red as she stood in naught but her swimsuit. Everything below her waist was hidden but her chest most certainly wasn't, her surprisingly-big breasts contained within her blue-white striped bikini top and pushed up further by an arm, causing her top to become dangerously loose, her tits looking ready to spill out.

[I hope this is good enough.] Was Ayane's message.

He hurriedly typed a message back. [You look stunning as always Ayane.]

He didn't wait for a reply and quickly switched to the next pending message. Toki. The blonde-haired maid was in her bedroom, that he noticed from the pink carpet, but it was her outfit that caught his eye the most – she was wearing that blue bunny-suit she knew he was so fond of. With the same stoic look she always had she took the selfie from an elevated angle, unashamedly giving him a look at her cleavage... and, with two fingers pinching the right cup of her leotard, pulled it out so he could see her nipple.

Despite 'showing' less than what Iori did, the sight was one that left him groaning and beating his meat more, his pace a constant. He sent a quick approval text before switching over to the next message, this one from Sena. It was another tit pic, though this one taken from inside the cabin of an ambulance. She must still be on the job; a prospect only reinforced when he noticed she was in the driver's seat.

His eyes though were on her chest. The conservative blue dress she wore was unbuttoned near the chest and she had pulled it out, allowing him a daring peek in at her plump breast clad in a lacy black bra, the underwear so fancy he wondered if she was thinking of doing something lewd.

[Please get such needs out of your system as soon as possible. I will drop by tomorrow night to ensure your health.] Was the message under the photo.

[Got it.] He typed back with some effort.

He was looking forward to her visit.

Puffing out a breath he slowed his hand, his dick swollen and throbbing in his hand as he kneaded it, his thumb sliding over the tip a couple times. He stopped himself before he could work himself up too much, laying his hand aside and catching his breath. As he did so he went back to his messages, having to scroll back up – and found a message from Kayoko.

A tap and he opened it. There was no message, only a selfie – and it showed Kayoko laid back on her bed, the quilt absent and her slender body relaxed. The latter fact was made evident since she was completely topless, no bra or shirt to cover her slim sides or defined ribs. Her breasts, small but fitting as they were, were left on full display, as was that delightfully-flat tummy of hers. Only a pair of grey panties were present to cover her crotch, one leg loosely crossed over the other as she posed for him.

He made a mental note to hook up with Kayoko sometime. While one of of his more distant and stoic students, she had no qualms with a quick hook-up, and damn if he didn't want to pin her down and fuck her raw right this second.

Exhaling a tight breath he flicked onto the next message. Instantly he was greeted by the sight of Hibiki clad in her cheerleader uniform, her top completely absent and letting her nice round tits hang free, though they remained somewhat pushed together by her forearms as she used her yellow pom-poms to try and hide her nudity. Mostly because, as he quickly realised, she was standing out on the court. In public. There was no festival going on at the moment, but there was probably a few teams or groups training elsewhere on the field. And she'd just gone out in public topless, presumably to get a selfie to send him at a later date.

[I didn't know you were an exhibitionist.] Sensei quickly texted, staring at her tits as he did so.

Her reply popped up soon after. [Not really. Did it only for you. Know you like this stuff.]

[Wouldn't mind seeing more of it in future.] Was his reply, his finger slowing with momentary hesitation – until his lust won out. [Or taking you in person.]

He didn't say it in explicit terms, but the implication got across judging by the blushing emoji she sent back, followed by three hearts, and then an emoji with their fingers poking together. He smiled at that, scrolling back up just to stare at the dog-girl's tits some more, imagining pinning her down on the field and taking her right then and there. Seeing if he could bust a load before someone else noticed.

Sensei shook his head. Adjusting his grip on his dick he went back to stroking himself off, flicking onto his next message. It came from Mashiro from the Justice Task Force, but unlike others it wasn't a selfie or taken in the mirror, but her phone was instead laid on the floor with her standing nearly over it. She was leaning forwards slightly, the light behind her but not hiding her embarrassed expression... and thanks to the angle he got a perfect up-skirt shot, everything from her slim thighs to her bare pussy shown; no panties there to cover her sex.

She never did wear panties, he idly mused, pumping his cock faster. Pre-cum gleamed across the tip of his dick and he rubbed it with a thumb as he stroked himself off, envisioning just dropping his hand under her skirt and getting her off when they had a moment alone. Mashiro would go along with it, of that he was nearly certain of, and the idea of just taking her with basically no warning was a decidedly erotic one.

''Fuck...'' He cursed under his breath. Why were all of his students so damn hot?

Two taps and he opened the next message – this one from Saori, surprisingly. Though they talked frequently she didn't often reply to these sorts of messages... and he was aroused to find a lewd on waiting for him. She'd taken her top off and covered her large breasts with one arm, though perhaps unintentionally was squishing her breasts up a bit. Though the mask she was wearing hid her expression well, the embarrassment in her eyes betrayed her.

'Nice tits Saori.' He thought but didn't say. Instead he sent a more tame 'nice' to her in response.

He enjoyed the sight for just a little longer, pumping his cock as he did so before tabbing back out and going onto the next message. It came from Shiroko and he eagerly looked forward to the sight – and he wasn't disappointed. Though she wasn't flashing him anything the mirror selfie she sent was erotic all the same – her ass facing the camera with her iconic swimsuit digging into her crotch, a slight cameltoe present. Even then he was more focused on her nice ass presented towards the mirror, her torso tilted as she looked back at the mirror with phone in-hand, the back of her legs facing it too.

[Does this excite you, Sensei?] Came the message underneath. [I took it earlier today.]

[Damn right it does.] He fired back, struggling to type with one hand whilst actively beating his meat. [I'll be in Abydos in a couple days.]

[I'll wait for you in that one classroom.] Came her reply, the implication not going unnoticed.

He tabbed out, his digit stiff as his other hand worked his cock relentlessly. He was aching now, starting at the base until he tugged near the bottom of his shaft and coaxed the need up, his hand going back to gliding along his shaft. One quick tap and the next image opened.

It was from Serika, and his dick ached instantly as he found himself looking at her bare tits – somewhat demure but a comfortable medium size more than a true small. She'd taken her top and bra off, a hint of the latter seen in the background on her bed, her cheeks aflame as she kept her other arm to her side as she took a selfie of herself. The demure expression on her face was hot but in his moment of lust he was more focused on her chest if he was being totally honest, groaning as he jerked himself off to the sight of those nicely-shaped hills.

He tapped back to the other messages faster now. He didn't check who was next and just clicked – and he nearly swore as he realised it was from Mutsuki. The cheeky brat of Problem Solver 68 – and she was damn well living up to that title right now. Her phone must've been resting back against something as it was laying at a slight upwards angle, focused on her sitting form. Creamy thighs were exposed to him as they stretched out of the frame, her legs open and a pair of yellow-white striped panties covering her crotch, her skirt lifted up just so he could see it. And with the view came the sight of her cameltoe, her pussy lips defined through the fabric; slim and a touch puffy, enough that he could imagine himself jerking his cock off against her panty-clad pussy and cumming all over her underwear.

[HOT.] Was his text back. Caps lock worked against him then but he didn't care – she could have her fun teasing him over it later. He was getting close now.

The next text popped up and he clicked it.

'Oh FUCK-!'

It was Noa. Stood taking a selfie in the mirror, nearly naked with just her white panties halfway down her right hip, covering just enough to hide her pussy but leaving her groin fully bare, a little trim of snowy hair visible. Her beautifully flat belly and slim sides led up to a pair of plump breasts hanging freely, her right hand covering them with her hair draped over her nipples – somehow hiding enough to stop him from seeing her chest fully yet only making it look so much hotter.

Finishing it off – and nearly finishing him off – was the small, curious look on her face, as if this was a novel thing she was trying out and not something to be embarrassed over. Which it was – this was the first time she'd sent him anything lewd.

Usually she just snapped photos of Yuuka and sent them to him instead.

Groaning deeply Sensei jerked himself off, feeling himself near his end. Pre-cum gleamed across the tip of his dick and his tip throbbed with such desperate need he was almost tempted to just cum now, to look at Noa's nearly-naked body and bust his nut – but no, he wanted more.

His trembling thumb quickly tapped back to his messages. Misaki had sent him an image with no text attached so he tapped on it, bringing it up. Compared to Noa it was much more tame but there was no denying how hot it was – a selfie taken from slightly above her head looking down at her, her top pulled up to show off her bare breasts. Her stomach was only partially visible from the position but the sight of her boobs was enough material for him to keep jerking himself off too, admiring her somewhat small nipples but larger areola.

Another tap, and Hina showed up next.

'F-Fuck...!'

Much like Noa's it was a mirror selfie. And also much like Noa's, Hina was practically naked. Stood with one hip out, her phone hiding her eyes and her fluffy pink pyjama top hanging wide open he could see everything from her small breasts and perky nipples down to her puffy pussy and creamy thighs. Her panties, thin and white, were around her thighs just below her sex, and when he looked closely he swore he could see a dampness to her underwear, one that also gleamed between her puffy folds. Had she been masturbating when he'd texted her?

He groaned, panting as he looked at her puffy pussy, imagining himself pinning her down and inserting himself inside of her. No gentleness, no build-up plot, just pinning her down and shoving his cock into her tight hole and going to town on her. Oh he'd never do that had they met but in the privacy of his mind, with his cock aching so badly for release, he envisionedit with the desperation of a dehydrated man in the middle of a goddamn desert. He didn't just need to fuck her, he needed to bust his load inside of Hina, to grind his crotch against hers as he assured his seed reached her ovaries and knocked her up.

He sent over the video of him jerking himself off, along with a message. [Enjoy yourself Hina.]

She sent a quick [WWW] face back from her in response.

Sensei smiled tightly at that, glimpsing her nude form one last time before switching over to the next message. He couldn't last much longer now.

Midori sent him a pic too, and when he tapped on it he was treated to not just Midori but also Momoi – the twin sisters completely naked aside from their black thigh-highs as they laid on Midori's bed together. Midori had an arm around Momoi whilst the pink-eyed sister reached down and spread both of their pussies open, as if to invite him to slam inside of their visibly-wet cunts, to savagely rail them into the bed until he'd emptied his balls within their wombs.

He groaned at the thought, at the raging need rising up his cock, unable to be quashed – not that he was trying to anyway. A tap brought up his next pending message, one belonging to Mika. Stood in front of a mirror like many of her peers she stood near-nude, only a pair of lacy pink panties on her hips and her pink hair tied up in a bob, her skin still wet from a shower no doubt. Her plump, full breasts were out on display, hanging slightly apart as she stood in front of the mirror, an attractive blush on her cheeks and small smile on her lips.

[Please make sure to think of me when you finish, Sensei~] Was the attached message along with a heart emoji.

He would've replied but he was too close. He stared at Mika's lovely chest, imagining pushing his face between them or cumming all over her glorious tits – then he clicked out, swapping to the next message.

Wakamo. Nude. Sat on her knees leaning forwards, legs apart enough he could get a sneak peek at her pussy and glorious thighs, his eyes flitting up to her generous breasts that were unconcealed from his gaze – squished together between her biceps. The grin on her lips contrasted with the bright blush colouring her cheeks, yet if anything that just made her look simultaneously cute and hot, and leaving him throbbing in his hand.

He tapped, another image-

It was a video. Hanako in the bathroom, fresh out of a shower, completely naked taking a selfie in the mirror. Glorious thighs dripping with water, her nether regions unconcealed and tempting him to look, to imagine himself between her legs as he entered her. Plump breasts hung freely and a naughty smile worked its way onto her lips, hefting her left tit up and jiggling it a little before she leaned in, put her lips to the phone's microphone-

''Cum inside of me, Sen-sei~''

He came. Like an eruption roared up his cock Sensei threw his head back into the pillow and gasped as he finally achieved release, a turbulent torrent of cum spurting up and landing back down on his groin – yet he didn't stop, tugging and yanking his dick as he came, amplifying the rush that went to his head and forced him to throw his head side-to-side, his muscles seizing and locking up, his tip aching so very acutely as he kept cumming!

Until the sheer force of his orgasm became too much and his muscles locked up entirely. His dick, overstimulated, felt almost agonised if he dared jerk it anymore so he let it go – hands-free and moaning as he came a tiny bit more onto his own groin; a gleaming, sticky mess splattered across it. He didn't care. That was the single hardest orgasm he'd had in a month and he was still getting flashbacks to every pair of tits he'd seen in the last however-many minutes.

Gulping in a deep breath Sensei released it as a heavy gasp, steadily relaxing as he stared up at the ceiling, his breathing gradually easing.

He glanced down at his phone then, at the video there.

…

[Video saved to gallery.]

He loved his students.

[END]