Sky felt himself slowly return to the waking world, and felt incredibly groggy. Blinking several times to get his vision to clear, he looked up at the ceiling that looked anything but solid, and instead looked like a starry night sky.

Suddenly, the evening's previous events came rushing back, and he felt the heat in his face increase. He sat up, and only then did he realize where he was; still in the tower he had entered, only now instead of passed out on the floor, he had been laying comfortably in the large crib on the right side of the room. Lastly, he looked down, and his eyes widened when he saw that fastened around his waist, was the thickest disposable diaper he had ever seen.

The pegasus resorted to taking slow, deep breaths to avoid freaking out over the situation he found himself in. How long had he been sleeping? He felt well-rested, but the otherworldly expanse out the window looked exactly the same as it did when he had first entered the tower. There were no clocks or timekeeping devices on the sparkling walls of the room. The changing table across the way contained two dozen more diapers identical to the one taped around his waist, in addition to other changing supplies.

The rational side of his brain had just enough time to reason that after he had passed out in front of the Princess of the Night, she had most likely gotten him changed into this, and settled into the crib he was now in, before getting on with her duties for the night.

'Great first impression, Sky.' He thought to himself.

He wasn't trapped in the crib in any way, but the mattress was comfortable, and it beat hopping over the bars to merely pace around the room until somepony came for him. He had no idea what time it was, so he might as well get comfortable. Staying in his sitting position, he grabbed the moon-patterned pillow, set it up against the far bars of the crib, then used that as a cushion of sorts as he leaned back against it, letting out another breath as he continued to marvel at the thickness of the foalish garment he was wearing. Most of it was plain white, while the sides near the leak guards was lavender.

The change in position let his mind fire off more signals to the rest of his body, and with the two glasses of wine from dinner having run their course, his bladder let him know that it was time to go. His diaper was still completely dry, his nose still getting hints of foal powder every time he moved his legs. As thick as it was when dry, he couldn't imagine what it was going to be like when it was wet, but he had a feeling he was going to find out shortly if he stayed put. He took one more look around, and confirmed that this was the only room at this level of the tower, and didn't see anything that looked like a bathroom on his way up with the captain. Besides, even if there was, part of him would think that rude, after Princess Luna went through all this trouble.

That was the other thing that was weighing more heavy on his mind as the seconds ticked by; the Princess of the Night was fully aware of the very kinky dream he had the other night, and that if it wasn't the reason he had been invited here in the first place, it was likely to be very related.

He was still incredibly nervous, but on the next deep breath, he shifted his focus towards the lower half of his body, and on the exhale, he relaxed his bladder. As he began to wet himself, he felt his nerves relax just a bit more, as he half-closed his eyes and continued to wake up with a yawn and a stretch. He felt his legs spread out a bit more as the diaper began to swell up. His stream of urine finally began to taper off, and if he was at home, this would be the point he'd take it off and get ready for the rest of the day, but he had a feeling that he was supposed to wait here. Because he honestly didn't have any idea if it was morning, or the middle of the night.

He figured the answers wouldn't be much farther away when the 'window' to the expanse shimmered, and a bright, glowing equine figure floated in, softly touching down on the carpet, before the glow subsided, revealing Luna, Princess of the Night and Dreams. Her gaze immediately went over to the crib, and she gave the pegasus a warm, but tired smile.

"Ah, you're already awake. Hello again, Sky Scribbles," she greeted.

"Y-Your Highness," Sky stammered, wondering if he should stand up on his mattress and give her a bow. Luna's expression turned to one of sympathy when she saw the bewildered expression on his face.

"I honestly was not sure how to approach inviting you here, Sky. I did not want to put too much information in the invitation, as I knew you would have to show that to multiple staff members to even get in the castle. Perhaps I should have found a way to be a little more forthcoming. I do apologize if any of this is unexpected."

Sky took a quiet breath as Luna stepped toward the crib.

"A b-bit unexpected, Your Highness, but... I suppose not all that unwelcome. I suppose I owe you an explanation for the d-dream I had the other night," Sky admitted nervously.

Luna merely shook her head gently.

"Not at all. I could tell that you didn't even remember it until we met earlier. If anything, I'm flattered, even if it wasn't lucid dreaming. But it is how I found you. I've been looking for a pony like you for awhile. I hope your sleeping arrangements were comfortable."

So Celestia had been correct; this invitation had nothing to do with his occupation. Luna had invited him because of his kink?

Sky nodded at Luna as her horn lit up, and the front bars of the crib unlatched, rotated down, and slid under the mattress.

"Let's get you cleaned up. I understand you dined with my sister last night, and she undoubtedly invited you for pancakes this morning, so we don't have long."

Sky felt himself go weightless as he was picked up in Luna's magical grasp, removed from the crib, and floated over towards the changing table, and his mind began to get overwhelmed as he realized what was about to happen. As he was set down on the soft padding of the changing table, Luna saw his wide-eyed nervous expression and his tense posture.

"Unless of course you'd prefer to do this yourself," she told him.

Every branch of the pegasus' decision-making process wanted to scream yes, but then he took another breath, and didn't want to deny the Princess if this was something she wanted to do.

"N-no, that's alright. You can do it if you want, Your Highness," Sky stammered.

Luna gave him another gentle smile.

"I admire your etiquette, Sky, but in this tower, just Princess, or even just Luna, if you please," she told him as she turned her horn's magic towards the tapes on his wet diaper.

As his ears twitched at the sound of the tapes ripping, Sky found it just slightly calming to take in the views of the starry ceiling that seemed moving and alive, as he felt the front of the diaper get lifted away and peeled off his half-erect stallionhood, as he silently cursed the science behind morning wood. As her magic pulled the diaper out from under him, Sky hadn't felt this little in years, as his lower half was effortlessly lifted off the changing table as Luna rolled up the wet diaper, threw it away, and began to clean him with chilly wet wipes.

"Never in my wildest dreams would I think you were an ageplayer, Princess," Sky told him, wanting to break the silence.

"Well, you and I both know that's not exactly true, Sky," Luna replied with a smirk. "But yes, I've been on both sides of ageplay, or as it was called in Old Ponish, 'Infans Aeturnum', or eternally infantile. But with the nature of my relationship with my sister, let's just say I usually prefer to be the older one," Luna said, as the few wipes joined the wet diaper in the pail. Knowing that he wasn't going to get a clean diaper put on, as he'd be returning to the common areas, he sat up before Luna lifted him up and set him gently down on the carpet.

"So, what am I doing here, Princess? Aside from being your foal? Don't get me wrong, I'm beyond thrilled that I'm that lucky, but I'm sure there must be more to it than that."

"Yes, a bit more than that. I've selected you as my potential Guardian. I'd prefer to explain some of the finer details when I'm not so exhausted from a night's work. So for now, please go enjoy breakfast with Princess Celestia. Before you return to this tower, the only thing I'll ask is for you to stop by the castle tailors, they should have the first part of your uniform ready," Luna told him.

"Certainly, Princess."

Luna gave a smile and curt nod.

"Alright, then. I'll see you tonight, then, Sky. I'm glad to have you here. There's your seal to get back in," she said, pointing to the crescent moon seal on the top shelf of the changing table. With that, she lit up her horn, and vanished in a flash of light, leaving the pegasus alone at the top of the tower.

Sky wasn't sure how close it was to 9 AM, but he didn't want to dawdle and be late for breakfast. He grabbed the seal, then slowly stepped through the fog, immediately finding the door, pushing it open. As the door closed behind him and he descended the stairs, he couldn't get over the fact that even though he was unconscious, that he had certainly been diapered by one of the Princesses of Equestria, as well as cleaned up out of a wet one. His mind continually circled that amazing fact, as well as one pestering question.

'Just what is a Guardian?'

Author's Note