Twilight's Lustful Descent
Extra Credit
Written by: Tatsurou
In concert with: Naughty_Ranko

Twilight stared down at the spellbook, reading carefully. “Alright,” she said calmly, “I’m pretty sure I’ve figured this spell out.” She traced the tip of her hoof over the lines. “Here’s the right mystic frequency...the right formulae…” She turned to examine the wards that she’d set up. “And with luck, the containment field I’ve erected will be strong enough that - even if I do lose control of the working - the only thing to get blasted by magical feedback will be me.” She fluttered her new wings somewhat nervously. “While I don’t think it will come to that, if it does, at least I’ll find out how much truth there is in the ‘alicorn regeneration’ rumors.” She’d heard alicorns - like Celestia, Luna, and possibly herself - had a much higher healing rate than normal ponies. Celestia had forbidden her from experimenting in that deliberately. “Well, here I go.”

Closing her eyes, she focused her magic. The lavender glow surrounded her horn, and the magic began to gather. Sparks of electricity appeared in the air before her. As the glow around her horn intensified, the mystic foci embedded in the runic seals began to glow, working to contain the released magic. The glow around her horn began to lose color, fading towards purest white. The electrical discharges in front of her became continuous, beginning to look like a ball of lightning lashing out at everything surrounding it, although the lightning struck inward rather than outward, the ball at the center growing slowly. As the glow around Twilight’s horn became pure white, she opened her eyes, blazing white light pouring forth from them. The sphere of lightning before her imploded.

Floating in the air before her was a swirling white disc that seemed to be made of cloud, floating vertically in the air before her. Twilight clapped her hooves happily. “I did it!” she cried happily. She flipped over a page of the book. “Now...what exactly did I do?” She read carefully. “Mystic Viewer...but what does it let me view?”

The disc began to clear, becoming a swirl of white surrounding the image of a location, a location Twilight recognized. “That’s Canterlot High!” she squealed happily. “This spell must let me view other worlds!” She bounced happily, eager to look in on her friends from her time in the human world. As the viewer began to shift perspective, Twilight locked her eyes on the image as it focused on two individuals. Seeing them, however, only confused her. “That’s odd,” she said, gazing at them. “I don’t remember anyone dressed like that while I was there…” As sound began coming through as well as image, Twilight fell silent to hear what happened.

Rune sat at his desk, staring over at the student still in the classroom after school. He knew what this was about. Her work only earned her a 'C' on that last test. She’s going to want to try and talk me into giving her a higher grade, for whatever reason, he thought to himself. We'll see what happens.*

Ranko fidgeted a bit before walking up to the his desk, when all the other students had finally left. “Mr. Rune. Might I have a moment?” she asked, looking down at the floor.

He looked over at her. "Of course, Ranko. What did you need?"*

She put her hands down on his desk and leaned forward, making sure he had a good view of her cleavage. Hopefully that, coupled with the tightness of the uniform, the shortness of her skirt, and her curvacious figure would make things go smoother. “You know that I was ill for a time, so I'm going to fail gym class and I need at least a B in your biology class to make up for it,” she said, trying to be casual. “I was wondering if there was some extra credit work I could do? To improve my grade, you know.” She smiled winsomely.

He plainly noticed the view. From his reaction, it wasn’t the first time a female student had attempted to use sexual wiles on him to get something out of him. I've never let it effect me before, he thought silently. However, he let his eyes travel over Ranko, at how tightly her uniform fit and the shortness of her skirt - shorter than regulations likely permitted - This gives me an idea. "Perhaps there might be," he said with a smile. He tapped his desk. "Take a seat here, and we'll talk about it." Standing up, he walked over to the door, discretely locking it and pocketing the key.

Ranko sat on the edge of the desk and took just that extra second, before crossing her legs. “Oh, that's wonderful.” She clapped her hands together. “I was thinking that I could do an essay on ... sexual reproduction.” She smiled lasciviously, obviously trying to get a rise of some sort out of the teacher. “It's been the best lecture you've given this term, but far too short. I'd like to study it a little more ... in-depth.”

He looked over at her. You're playing right into my hands, he thought, grinning. "An essay? I'm afraid that the end of term is far too close for you to finish writing it and let me grade it in time for it to affect your grade." He walked right up to her. "However, given the subject matter, since you seem so...passionate...about it...perhaps a..." He threw his arm over her shoulders, letting his hand fall across her breast, gently squeezing. "Practical exam?"

She struggled to keep a straight face. She obviously wasn’t prepared to go quite this far. But if I fail this class, I can kiss CHS goodbye, she thought silently. “Weeeeellll,” she began. Her fingers danced up his leg and in the vicinity of his zipper. “I haven't had time to study, but I suppose I would be up for either a hands on demonstration or an oral exam on short notice.”

Rune smirked at her. "Well, I suppose we can start with a hands on demonstration then, as a refresher course." He continued to fondle her breast, bringing his other hand slowly up her inner thigh - starting by just trailing the tips of his fingers up and down, then rubbing his whole hand, before finally rubbing her through her panties. "Then, when I feel you're ready, I can give you that oral exam to test your knowledge." He grinned, plainly having no intention of stopping there, although this was not noticeable to Ranko.

She resisted the instinct to brush his hand away. I suppose that's alright, she thought to herself. Better make him cum quickly, though. She unzipped his pants and pulled his member out from his pants. “Hmm, good,” she said as she saw his size. “Lots of room to demonstrate. First, lubrication.” She leaned down and spat on the tip, beginning to rub the shaft with her hand.

Now that she was bent over, Rune smiled, placing his hand on her rear, squeezing it before once more rubbing Ranko through her panties. "That's good,” he said, grinning. “But remember not to take it too fast. Slow and steady is the way to do it."*

“Of course,” Ranko replied. “And it's important to alternate.” She closed her thumb and middle finger around the shaft, continuing to slide up and down slowly. She then used her index finger to draw circles on the glans.

Rune nodded, enjoying the sensation. "Very good. Now show me what you've learned.” He grinned wickedly. “Since you seem so passionate about the subject, I presume you have indulged in...extracurricular studies on the subject?" he asked, grinning at the use of metaphor.

Ranko nodded, quickening her pace a little. “I'm part of a ... study group,” she said, settling on a proper metaphor. “We meet on the second floor of the library from time to time.”

Rune smiled. "You don't say? I'll have to stop by sometime, see what study techniques you use." He slid her panties to the side and begin rubbing her lower lips directly.

She slid off the table with an awkward smile, getting her secret spot out of his reach. She knelt down in front of him. “Sure, feel free to stop by. We could use an advisor.” Gotta remember to tell the others to use the nurse's office for a while, she mentally noted. “Why don't we move on? My peers tell me that I'm the best at demonstrating oral sensitivity.” She began to lick the underside of his cock.

Rune nodded with a smile. "Alright, we can move on to that." He smiled, looking down on her. "Tell me, have you also studied the effect of...visual stimulation on the process?"

The sigh that escaped Ranko’s mouth was barely audible. Geez, this guy is a real perv, she thought. I could get away with wiggling my hips a little for Mr. Terada. “Of course,” she said aloud. She pulled her top over her head and let it fall to the side, but kept her bra on. “Let's not get too caught up in the formating of the page, though. You'll want to evaluate my deeper understanding of the subject matter.” She winked at him, obviously hoping this would suffice, and took the tip of his cock in her mouth, wiggling her tongue along the line where the glans and shaft met.*

He enjoyed the view she granted him, letting her continue her work on his member. "Well, your knowledge so far as demonstrated is...satisfactory,” he replied, letting that barb sting her pride. “Surely your knowledge is more...extensive."

Ranko didn’t reply. Her only response was to take his cock deeper into her mouth, stopping just before she gagged. Her hands began to fondle his balls.

Rune gritted his teeth, suppressing a moan of pleasure. "Hmm...perhaps your knowledge of the subject is more extensive than I thought.” He smiled somewhat wickedly. “Continue your demonstration, but perhaps indulge in alternative technique?"

Ranko looked up at him, her eyes almost a glare. Goddamit, man, she snarled internally. I get it already. You're not gonna be happy until I give you the full scenic view. She reached around her back to unhook her bra, letting it fall to the ground. Her annoyance was starting to show on her face as she wrapped her breasts around her teacher’s member and began to slide up and down its length.

Rune watched her with a smile, obviously enjoying the new stimulation, but he noticed his student’s irritation. "Surely you've learned that at least the appearance of mutual enjoyment is important?" he said playfully.

Ranko put her best fake smile on and looked up at him. “Whatever do you mean, Mr. Rune?” she asked, feigning joy and enthusiasm. “I'm enjoying myself very much. It hardly seems like school work.” She tried to cover for the slip-up by sliding one hand into her panties, letting go of her breasts in the process. Her eyes showed surprise as she discovered that she was actually starting to get a little wet.*

Rune smiled at her. "That's good. I'd hate to think you were...unwilling to work to improve your grade." Since Ranko had released her breasts to touch herself, he grabbed hold of them and began squeezing them around his thrusting member. "Perhaps you could demonstrate some co-operative technique?"*

Ranko managed to hide her irritation. I wanna wipe that smug grin off your face so badly, she thought silently. So why is this turning me on so much? She stuck out her tongue, so it hit the tip of Rune’s dick every time he thrust.

Rune smiled at her efforts. "Surely your other hand has things to do as well?" His voice had a tension, implying his moment was approaching, but he plainly wanted to make her work for it.

Ranko looked up at him through her eyelashes. She cupped his sack with her free hand. But I'm not done yet. Inch by inch her fingers moved forward, until they finally felt her teacher’s anus. She could feel his cock throbbing every time it slapped against her tongue. This should do the trick, she thought as she pushed one finger lightly against his ass.

Without warning, he released her breasts and grabbed her head. Shoving his dick into her open mouth, he released his seed into her throat, silently urging her to swallow it all. She clamped her lips down around his cock, knowing this was what he wanted, and began to swallow, managing to gulp down every drop. When he let go, she licked up the last few drops that were still on his member and looked up. “Well, teach? Do I get a passing grade?”

The teacher’s smile was deceptively innocent. "Well, I see that you have passed your oral exam. However, there are other things I need to test you on.” His grin widened slightly. “I will need to review your ...self study technique." He was openly smirking at her now, leaning back against his desk.*

Ranko resisted the urge to facepalm. Enough with the double entendres already! “Fine, if you insist.” She pulled down her panties and sat on a student's desk. She raised her knees up to her ears, giving her teacher a good view. She began to rub her pussy slowly. “But that's it,” she said firmly. “We're done after this.”

Rune sat back against his desk, watching her stimulate herself. "Well, if this is as far as you'll let me test you, I expect to see the fullness of your technique, then." He walked forward, sitting on a desk right in front of her, so that there was barely any space at all between them.

Ranko began to knead her breast with her left hand while her right continued to rub along her entrance. She began to pant. Feeling a man’s eyes on her was really starting to make her horny. “Say, I'm always looking to expand my knowledge. Why don't you show me how you do it, too?”

Rune smiled. "Well, alright." Placing his hand on his shaft, he began to stroke the length slowly. "I use a combination of tactile and visual stimulation to achieve the desired result. Perhaps you can help me a bit with the latter?" His gaze on her becomes intense. "Spread your legs wider. Give me a better view of all you're doing."

She did as she was told, not really resisting anymore, and spread her legs wider, seemingly unaware of how inviting she was making herself. She spread her lips with her fingers, showing him her overflowing, pink insides. Then she started to play with her clit.

Seeing her overflowing flower, dripping with her sweet nectar, excited Rune to no end. I’m not waiting any longer, he thought, standing up. Coming right up to her, he braced the tip of his throbbing member against her spread lips, his arms trapping her so she couldn't flee.

Ranko’s eyes widened as she felt the fleshy tip against her lower lips, and she pushed against his chest. “Wait! What are you doing? This wasn't part of the deal!” she cried out plaintively.

Rune smiled at her. "Wasn't it? I told you I would test the fullness of your knowledge in this matter." He began to slowly push his way into her, stretching the moment of penetration out as much as he could.

Ranko gave a small glare, but there wasn’t much of an edge to it. As he pushed into her, her hips surged forward to meet him of their own accord. She needed a cock right now, no matter how much she hadn’t wanted this to happen. “Fine,” she grumbled, “but I better get a fucking A+ outta this.”

Rune smirked down at her. "Not with that attitude you won't," he said, thrusting into her as deep as he could go. "Remember what I said about mutual enjoyment?"*

Ranko moaned as she felt him go all the way inside. The boys in the study group are nothing compared to this, she thought in near ecstasy. This is the feeling of a man inside me! She wrapped her arms around his neck and pulled herself up. “You want me to enjoy myself? Fine.” She covered his lips with hers and thrust her tongue into his open mouth.

He returned the kiss, enjoying the feeling of her tight walls around his phallus. As his tongue danced with hers, he began to move back and forth inside her. His hands lifted up to caress her breasts, squeezing them gently.

Ranko’s legs closed around Rune’s hips, pulling him in deeper. She broke off the kiss and started nibbling at his collar bone. He leaned forward in response, nipping lightly at her ear. He began to thrust into her more vigorously, pinching and tweaking her nipples as he did so.

She moaned with every thrust, feeling herself getting ever closer to orgasm. “Oh, fuck yes! Do it harder! Fuck me with your dirty cock, teach!” she screamed out.

Rune leaned forward suddenly, pinning Ranko on her back to the desk as he began to pound into her violently, trying to hold myself back, to time his release to his student’s.

Ranko screamed loudly. “Oh, yes. Come on! Pump it into me! I need a fresh sample for my advanced studies!” Her toes curled and her insides tightened. “Cummmiiinnng!!!” Her last scream triggered his release deep inside her, spraying his cum all along her inner walls and deep into her womb. As the moment passed, he leaned across her, catching his breath.

Ranko smirked at her teacher, panting. “Now if I'm not mistaken, that's how babies are made,” she said jokingly. “You might wanna ask Principal Celestia for a raise. Cause today wasn't a safe day.”

Rune grinned back at her, obviously looking forward to her reaction to his next statement. "I'm sure Mom would be more than happy to pay extra for grandchildren," he said with a smirk.

She blinked, trying to comprehend what was just said. Then she threw her head back and laughed. “Is that so? In that case we'll have to name it after her, if it's a girl.”

Rune smirked. "Indeed. She'll be happy, that's for sure, after our last talk." He mimicked Principal Celestia's voice. "'Here you are, the only young male teacher in a school full to the brim with hot young girls in tight fitting uniforms all giving you doe eyes, and the crèche is still empty! Fix it, already!'" He chuckled. "I think she may have redesigned the new uniform with something like this in mind."*

Ranko stroked Rune’s hair. How did I not see how handsome he is before now? “So you'll put in a good word for me concerning my grades?” she asked playfully, giving him a wink. “In return you can give me a pop quiz whenever you like.”

Rune smirked in response. "Don't worry. Given the effort you put in, I think I can easily have your absences overlooked and credit for the missed assignments." He lightly nipped her ear. "And I'll be sure to give you a proper pop quiz regarding your studies when the times are right." His silver eyes seemed to glimmer. "Of course, I hope you won't mind meeting my father soon. The 'Big D' doesn't like too many surprises." He chuckled. "But as he would say...welcome to the family."

Twilight stared blankly as the image faded. “W...what?” she gasped out. “Wait...Celestia’s son? And...teacher? Sex? But didn’t he...and then she...and…” Then something else clicked in her mind. “Wait, ‘Big D’? That sounds like a mob boss or something, but who could be-Discord?” She shook her head. “No, no, no, no, NO! It wouldn’t be like that! Celestia’d never have a kid with Discord, or arrange it so her son could get away with molesting his students like that! It makes no sense!” She shuddered a bit, struggling to catch her breath. “So why was it so bucking hot?”

Realising what she said, she brought her hoof down hard on the magical foci she’d used to control the spell, ending it. “No, that was not sexy! I was not turned on by that! And I am never using that spell again!” Turning, she grabbed the book with her magic, ready to banish it to a nether dimension or something similar...but paused. “But...I can’t really blame the book for it. I mean, it’s not like the spell is designed to only lock onto things like that. I’ll just...put it away somewhere for now.” She set it down on the table. Turning, she went up the stairs. “And the cold shower I’m about to take is for hygiene purposes only!” she shouted to no one in particular.

Behind her, an ominous glow briefly surrounded the book, accompanied by a mischievous giggle.

Author's Note

This chapter was based of this RP thread in the group Lilith911's "Special" House
here is the link to the group story info thread
Happy clopping