When Dustin wasn't sleeping, enjoying a meal, or enjoying the time Kiera imposed he would spend with friends, he was studying.

The chemistry of a shellperson was a complex and delicate matter, and Dustin trusted Kiera to manage that side of things, but he wanted to learn how to help her more directly, which meant spending a lot of time with Teach.

Teach wasn't "smart" like some of Kiera's more advanced AI, mainly because it wasn't configured to learn as it went. It was an AI with a single purpose, and that purpose was its name.

Dustin was learning a very specific side of medicine that normally took years to study. He was compressing it down to the most practical parts, but it still might not be enough. He was studying how to operate on shellpeople, and in particular adjusting their implants and connections.

But right at that moment, he was laying with Twilight Velvet. Kiera had disabled his access to Teach for a set number of hours a day, and despite Dustin's every attempt, he couldn't bypass her.

Stretched out, his belly to Twilight Velvet's back, Dustin had to admit that Kiera might be right about forcing him to take some time off. Of course, he wouldn't admit that to Kiera.

Reaching one hoof down, Dustin stroked Twilight's fur with the grain, sliding his hoof until he found the spot. Just past her last rib, Dustin started to wiggle the soft flesh under his hoof. The result was exactly what he was after.

Twilight Velvet squirmed and started laughing. She tried to knock Dustin's hoof away, but he seemed too adept at getting it right back to the most ticklish part of her body. "St-Stop!" She tried grabbing at Dustin's hooves with her magic, and only succeeded in forcing him to employ his wings.

Straining against her urge to squirm and squeal, Twilight rolled over and landed atop Dustin. He stopped tickling her, and started poking her instead, but it wasn't his limbs he was poking with. "Ready again?"

Dustin should have said no. He was noticing a lethargy setting in after sex that seemed far greater than what he had experienced as a mare, even given the male tendency to refract. But Dustin was literally a stallion, he had a reputation to maintain. "Do I feel ready?"

"You feel ready." Twilight Velvet slid her hips back slowly, forcing him to glide along her soft fur and miss all targets. "But you're not a big, strong earth pony anymore, Dust." She tilted her head down and nuzzled at Dustin's neck, nipping and mouthing at his fur.

It made sense for about five seconds, then Dustin had been mentally confused enough to distract him from the mare teasing him. "Wait. Hold on!" He felt Twilight stop, and her face gazed down at his with concern. "You mean to tell me as an earth pony I had more—Hey!"

Twilight relaxed her hips again, releasing the pressure on Dustin's shaft. "More stamina? Of course."

Dustin was prepared to pursue the conversation, but at that moment Twilight leaned forward and then rocked her hips onto him. A slew of neurons in his head fired at once, a signal to the thinky-thinky part of Dustin to shut up and enjoy sex.

With Dustin right where she wanted him—in more ways than one—Twilight decided it was time to get where she wanted her to be. Using her magic, and a trick not a lot of unicorns even believed was possible, she levitated herself up, turned around, and dropped back to the covers.

Afforded a great view of Twilight Velvet's plot, Dustin tried to compliment her on picking a position he was fond of, but she began to rock atop him. Laying on his back, Dustin watched Twilight move in place, changing her angle repeatedly. When Twilight turned to look back at him, Dustin saw mischief dancing in her eyes.

Twilight lamented that the angle made for too little penetration to feel Dustin all the way inside her, but the different position let him stroke parts of her that normally went untended. Turning away from Dustin's grinning face, Twilight tilted her head up and squealed from sheer enjoyment.

Despite his body's enthusiasm, Dustin really was feeling a little drained, and with Twilight Velvet practically doing all the work, all he could do was lay there and flap his wings weakly. She milked at him, her strong pelvic muscles squeezing at his shaft, but he strained to hold back the inevitable tide.

A yell, sharper in pitch than Twilight's normal squealing, caused Dustin to smile. The weight of Twilight Velvet, her body twitching and jittering like she was being tickled, fell to Dustin's barrel. "I'm not the only one to overestimate my stamina."

Struggling against her raging orgasm, Twilight tried to pull herself under control, to—at the very least—get Dustin off too. She was forced to admit Dustin was right, but just as that thought was making its way to her mouth a pair of wings closed around her sides and she was picked up, shoved, and penetrated more satisfyingly deep.

Closing her eyes, Twilight Velvet smiled, her mouth hanging open slightly, and panted. The weight of Dustin on her back wasn't just good, it was amazing. The air stirred up by his flapping wings only added to the rush of pleasure as he took control.

Mid coitus, Dustin's body had ambitions it would not be able to back up under normal circumstances. He drove himself forward, pulled sharply back, and rutted with Twilight as hard as he could. Not that he could stop. His body wanted its prize, and it wasn't listening to his brain.

At that moment, Night Light opened the door and watched Dustin riding his wife. His eyes widened a little, and he just stared in amazement at the almost animalistic sight before him. The sounds and smells of sex assaulted his senses, and without realizing it Night became aroused.

Dustin's body reached its peak relatively quickly, and it seemed like one moment he was a jackhammer, the next he felt an electric rush through his groin, and then suddenly found himself slumping onto Twilight's back.

"Sweet Celestia! Is this what you two get up to all day?" It was a line Night Light never got tired of delivering. He walked across to the bed where his wife was pinned beneath another stallion, and crawled across the covers toward them.

"All day?" Twilight was trying to focus on the full feeling that Dustin's heated issue was giving her, as well as her husband's words. The fact she was still getting little, post-climactic aftershocks was just cream on her cake. "Of course not. For the other half of the day, I ride him." Dustin's shifting caused her to almost squeal out a word.

Dustin barely registered when a snout came in from the side. He turned his head slightly and caught Night Light's kiss on the lips. "'m sorry if I don' talk—mmm—much." A second kiss almost caused him to lose focus and just embrace Night. If he had more energy, it probably would have.

"What'd you do to stir him up like that? I don't think I've ever seen him quite that…" Night Light fished for a word to describe the scene he had witnessed when he first entered the bedroom. He gave up after a few seconds, instead just cuddling up beside Twilight and Dustin. "I call next."

"Not it." Twilight and Dust both said at the same time, then started giggling.

Night Light rolled his eyes. "You two wore each other out, and now I come home and there is no pony for Night to—" Night's silly tirade was caught short by a kiss from Twilight Velvet and Dustin y Neil at the same time.

Pulling back from the kiss long before Twilight and Night seemed inclined to, Dustin traced Twilight's cheek up to her ear and gently nuzzled at it. "Maybe we could find somepony else? Spread things around a little more?" As soon as he had said it, Dust blinked in surprise at the look the couple gave him. "What?"

"Not may ponies are this free with their love." Night Light gestured to himself, then to Twilight and Dustin. "Monogamy is built-in with most."

"What?" Dusting looked from Night Light to Twilight Velvet, although being on Twilight's back, still made looking her in the eyes impossible. "So the reason you are together is—"

"Love. But shared interests helped a lot." Twilight picked then to squeeze down on Dustin's shaft inside her, the grip of her muscles the nicest way she could ask a stallion to hop off.

"Shared interests, and inquisitive college ponies." Night Light recognized the look of distress and lust on Dustin's face, and reached a hoof up to help him stand.

Twilight laughed as Dustin dismounted her. A yearning emptiness drew a soft sigh from her, and she was about to run to the bathroom to clean up, when hot breath poured over her nethers, and then a tongue caught the first of Dustin's issue leaking from her vulva. She turned her head and saw her loving husband cleaning her up. "Young mares wondering if they like mares. Stallions thinking they were sure about the same. As well as both chasing after Night Light. I like to think we taught a generation to share."

Dustin had raced to the en suite, and made his way directly into the big shower. Turning on the taps, he groaned in delight at the cascade of water over his fur and wings. "But you said they aren't—"

"Aren't interested in playing around, anymore. Dust, dear, we filled our bed most satisfactorily, but our friends all paired off, and soon we had to do the same. Finding you—!" Twilight moaned loudly, feeling Night's tongue journey into her sensitive vagina. Words failed her, and she let every bit of concentration leak from her body, seemingly slurped out by her naughty husband.

The way Twilight's voice sounded, Dustin knew the conversation was over for the moment. He focused on getting lathered up, and started to rinse off his fur. He was so focused on cleaning that he didn't spot Twilight slip in beside him until her fur brushed his wing.

"Is this seat taken?" Twilight Velvet nuzzled at Dustin's neck. "Sorry about that, Night was tending to his husbandly duties. Where were we?"

"Well, I was on top of you, and you were—" Dustin laughed when Twilight splashed his face with water from the shower head. "You were talking about how awesome it was to find me."

"Call it a sense. Some ponies can tell when their luck is changing, others can sense impending disaster." Rubbing more suds into Dustin's back, Twilight Velvet was using her magic to help speed their cleaning of the various scents of sex.

"And you can sense when a pony is open to—" Dustin had to pause when Twilight used her magic to clean under his belly. He waited for Twilight to finish, enjoying her ministrations completely. "… Open to—uh—openness?"

"Bingo. I guess it's more of a hunch than an actual sense. You should see one of our Twily's friends. If a drop of rain is going to fall on somepony in the same town as her, she knows about it." Swapping to her own hygiene, Twilight started soaping her own fur up. "I picked up a sense of it, and made some moves."

"And I bit. I couldn't believe it. I thought…" Trailing off, Dustin y Neil tried to remember what he had thought. "A very pretty unicorn pony was interested in me. I had you trying to stick your tongue down my throat."

Twilight Velvet scoffed. "I was hardly that forward." She paused a moment. "Well, not quite that forward."

"And then I had Belay—who beat us to the punch—urging me to relax and live a little. Then Night Light came in and scared me half to death." At a touch to his wing, Dustin obediently lifted it for Twilight to start tending to.

Stroking feathers was one thing, but when Dustin felt Twilight's magic ease all the way up to his wing and start to carefully wet each feather, he nearly folded down to the shower floor. Only locking his legs stopped the sudden mellowness from overwhelming his ability to stand.

Twilight kept quiet. She had been with pegasi before, and knew quite well how sensitive wings could be. Relied upon to pick up the slightest changes in wind and pressure, the tiny feathers weren't the bits that were sensitive, it was the nerve-filled flesh they were attached to. She carefully tended to Dustin's wings, and only tried to converse when they were fully done.

"Speaking of Belay, you were having lunch with her, right?" Twilight, having finished washing Dustin and herself, nibbled lightly on Dustin's ear under the spray of the shower—it was the best way she had worked out to wake him from a stupor such as grooming his wings caused.

"Huh? Belay? Lunch?" Lifting his head, Dustin nonetheless tilted it so one ear was within Twilight's grasp. "Yeah. We were going to discuss—"

"Kiera." Twilight, rather than nibbling, kissed Dustin's cheek. "How is your study going?"

"Slower than I want. I have to learn this operation. I have to save her." When he felt Twilight Velvet's foreleg wrap around his shoulder, Dustin leaned against her for the obvious comfort he needed so badly. "I will save her."

Author's Note

Twilight: are you ready?

"R-Ready for what?" Twilight Sparkle, Princess of Friendship, suddenly looked worried. "Is there something I'm missing? Did I forget to return my books to the library again? Is the sun going to plunge into Equestria and destroy the entire country? What is going on?!"

So I do this "Ask X" thing. X can be any pony within the story. You can ask them anything and they will definitely, hopefully reply. Keep the questions appropriate to the age-rating of the stories, and they will answer the best question in the author notes of the next chapter. The more votes a comment has the more likely I will get it to the right pony to answer. Try to keep it to one question per post! They will pick one question per chapter.

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