After his ordeal in the dream realm, Sky had a feeling he was going to remember this play session of New Super Alicorn Sisters for some time. To experience something as otherworldly as the dream realm, then to come back to an activity so ordinary... It was really quite surreal.

He paused the game when he heard the door open, and turned to see Princess Luna walk in.

"Are you alright, Princess?" Sky asked.

Saying nothing at first, Luna merely came forward, stood right in front of Sky, and pulled him into a hug, and held him gently.

"You are a good pony, Sky. I just wanted to say that, and erase any doubt you may have of that fact because of whatever Cobalt may have said or done before he left you without a word. Luminescence... That was a conversation I never realized I had to have, and she told me that she never would have done it if you hadn't convinced her to do so."

Sky set the controller down and brought his front hooves up to return the embrace.

"Thank you, Luna. That means a lot, coming from you," he replied.

The Princess of the Night slowly parted from the embrace, and sat down.

"I am very proud of you, Sky. You did well tonight. The citizens of Equestria will sleep more soundly with your help," Luna told him.

"I hope I never fail you, Luna," Sky said.

"Nopony is perfect, Sky, remember that. So... Now with that out of the way, are you in the mood to celebrate at all? After all, I believe I did make you an offer before your trial..." Luna stated. She turned to the closed door, and her horn lit up. The glow intensified for a moment, before a familiar yellow curtain of fog materialized in front of the door, ensuring that they would not have any interruptions. With that, she brought a hoof up to just below her neck, and unfastened her cloak, letting it drop to her right side, leaving her bare, save for the diaper underneath.

"Care to see if your Princess is in need of a change?" Luna asked, a hint of sultriness in her voice.

Sky felt his cheeks grow hot as he set the controller down and was levitated off the beanbag chair as Luna slid over to take his place, laying down on her back, resting her head on the beanbag. The pegasus' eyes fell to Luna's diaper, and saw from the dark yellow tint that it was considerably wet. The princess' horn lit up again, there was a flash of light, and a diaper bag dropped onto the carpet next to her, containing changing supplies, and a pair of disposable diapers, one patterned like the one she was currently wearing, and one slightly smaller one that looked like the one he was wearing.

Taking a deep breath, Sky reached forward with his front hooves, and one by one, tore off the tapes that kept the wet diaper fastened around Luna's waist, before pulling it open, and the pegasus had to focus on his breathing as he took in a sight he never thought he would see in his life.

"I hope you aren't so naive to think that a simple diaper change is all we'd be doing to celebrate your success tonight. So if you'd like to take advantage of the opportunity... Please feel free to do so, my guardian," Luna told him.

The pegasus' submissive side began to peek more and more above the surface as the Princess' words gave him permission to go farther. He barely noticed Luna's horn light up, and magically tug the front of his diaper down just enough to free his erection that had been all too apparent even with his diaper covering it.

Luna noticed how the pegasus was quivering, and barely drawing in steady breaths.

"Sky..." she began, keeping her voice calm to ease her companion along. "Is this your first time with a mare?"

Luna's question finally brought Sky's eyes up from down between her hind legs, and up to meet her gaze for but a moment, before he looked off to the side in embarrassment.

"N... No," Sky admitted, his voice nearly shaking. "Th-there was one other time, but it was hardly memorable. Cobalt wanted... Wanted to try having a threesome, and because I was so desperate to try and make him happy, I agreed. But the mare he brought into our bedroom... I didn't really find her attractive. For all I know she's who he ran away to... B-But it's not like now... Where I am attracted... Very attracted, and I don't want to do anything wrong, or, you know, not meet expectations..."

The pegasus felt Luna's magic run through his mane and down his back, leaving behind a slightly tingling sensation, but it did help calm his nerves somewhat as the Princess magically stroked him.

"I know that words alone aren't going to ease all of your worries, Sky, so I'll just say this; the only expectations I have of you were surpassed in the dream realm tonight. Everything else, will come with experience. So when it comes to worries, don't. Don't worry. Just have fun."

With that, Luna spread her hind legs just a bit farther in invitation, and waited with an encouraging smile for Sky to continue.

Sky stepped forward as much as his partially pulled-down diaper would allow, and looked down, making sure he was lined up properly with Luna's waiting marehood. He reached down to make sure he was pointed at the right angle, then slowly leaned forward, and felt his tip slide in, along with the next two inches.

He had to remind himself to keep breathing as he slowly slid in. It was warm, and snug, and... Perfect. Once he had slid all the way, and was belly-to-belly with Luna, he let himself snuggle into the Princess' barrel, slowly pulling out two thirds of the way before pushing back in, beginning a slow, gentle pace.

Luna brought her front legs up and wrapped them around Sky's nearly prone body, giving off several soft moans of pleasure. It had been quite some time since she had had anything down there other than a toy... Or a fantasy dream.

Sky made sure to keep his thrusts slow and methodical, because it had just occurred to him that he had last achieved release days ago, before coming to Canterlot, and since that time, he had spent much of the last several days padded and pouring his feelings out. So he was undoubtedly and understandably pent up, and wasn't going to last long as it was. The crinkling of his own diaper, and the slight odor of urine coming from Luna's wasn't exactly slowing his pace towards the inevitable, either, as he felt himself flaring already.

"P-Princess... I'm close..." He warned Luna, trying to slow his pace just a bit to hold off just a few more moments.

"It's alright, Sky. Be a good colt and show me how big you are," Luna told him.

Those words certainly did the trick, and Sky immediately lost his pace as his thrusts became erratic for just a moment, before he hilted in Luna, and held himself there, as he felt himself erupt inside her.

"I love you, Luna!" He gasped barely above a whisper, feeling himself tense up. Luna held him tight, squirming ever so slightly as she felt the pegasus empty himself up into her. Fertilization wasn't exactly a concern, so she merely focused on how good it felt to bring him to release so quickly, knowing that his overwhelming stress over the last several days had likely drained out along with his seed. When he was done, his body became little more than pudding as she continued holding him against her as he went almost completely limp, as the exhaustion set in.

"Well, there might need to be just a slight change of plans, because I doubt you're going to be able to finish with this diaper change. Not that it matters, I should probably go without for the last bit of my morning. I can't say the same for you though, little Sky," Luna said gently.

She relaxed her embrace just slightly, letting him slowly pull out with what little lower body strength he had remaining, just before feeling himself become weightless as he was picked up in her magic. There was a flash of light, and when he opened his heavy eyelids again, he found himself floating in the top room of the Guardian's Tower again. He was laid down on the changing table, and Luna went about getting him out of his moderately wet diaper and into a fresh one, before buttoning up his onesie again and gently depositing him in the crib.

"Sweet dreams, Sky. Sleep well, because your official induction ceremony is next," Luna told him, before kissing him on the forehead and raising the bars.

The pegasus barely kept his eyes open long enough to see her leave through the fog-covered door.

Author's Note