As a celestial wavelength, Castiel was formless. He could see and hear across the reaches of the universe if he wanted to. He could talk to others (namely angels) using this frequency, even if they were eons apart. It was also the most efficient form of travel to-date. Castiel was communicating with his brothers and sisters across the stars, and though most of their conversations were strictly matters of business conduct, there were some occasions for leisure. But these occasions were rare. Their work was so demanding to begin with. Whispers in a beautiful, limited language caressed him. It was peaceful here.

But the peace didn't remain. Castiel felt a sudden disturbance in the energy around him. A force was tugging and nipping at him, like teeth tearing at a hard-to-pop bubble. Castiel tried to shoo the disturbance, but it came back even more demanding. Castiel alerted his brothers and sisters that he was experiencing some kind of interference. It was a daunting force, and he couldn't name it. He struggled to remain online, but in a snap he was gone.

Castiel nearly fell when he suddenly materialized with feet on solid ground. It took him a minute to get his sea legs, but when he did, the first thing he realized was the power that he felt resonating in this place. He in was a large, domed room, coated in chrome. It glowed a cyan blue. He didn't know where he was, but the presence here was daunting. The angel looked behind him and saw a door. Naturally, he spun around and meant to exit. But upon pulling the doors open, he was stopped. There was nothing in front of him. Nothing but stars and space.

"You aren't going to find an exit that way."

Castiel turned back around the second he heard a voice from behind him. He had to admit he was startled. Not too many things caught him by surprise, but this was something new. He eyed a newly-revealed figure warily. He didn't seem to be any taller than himself. He was dressed oddly enough— an odd man complete with a tweed jacket, slacks that were a bit too small on him (he could see the man's ankles), and a wine-colored bow tie with very small pin-stripes.

But most importantly, the thing that got to Castiel the most was the fact that this man wasn't an angel. He could sense a lack of divinity in him, and aside from his eccentric outfit, he looked like a normal human being. The angel didn't observe any traces of summoning sigils in the immediate vicinity. And yet the power that he felt coursing through the air was enough to leave him instinctively unsettled. The angel didn't budge from his spot. He just kept his eyes on the stranger.

The man strode forward with a prance in his gait, a curious look tacked on his features.

"How did you get in here?" he questioned, drawing nearer and nearer to the angel. Castiel didn't answer the man for a moment, but instead he absorbed this new setting once more.

"—What is this?" His gruff tone posed at last, ignoring the question he himself had been asked. Castiel looked around, peering up at the ceiling, and his eyes fell to the center console, where a pillar comprised of several glowing columns illuminated the room. He found himself staring into the light.

The odd man willingly jumped to Castiel's question.

"This? This-," he spun around with a wave of his arms to make a grand introduction, "is my ship~ She's a real beauty~" The odd man turned and winked to the center console. He was actually flirting with the machine. "Old, yes, but beautiful~ She can do anything~"

It took little effort for Castiel to overlook the stranger assigning the spacecraft a gender. He was utterly indifferent. He had other things on his mind at the moment. There was no importance in being trivial here. He watched the cables that were hanging loosely from the ceiling as they swayed gently.

"The TARDIS!" The man kicked up his tone a notch, swept up in a flurry of excitement, and he wheeled around again to face Castiel, "Time And Relative Dimension In Space. This ship is capable of traveling backwards and forwards and this way and that way and any which way in time and space that you please~ Now, my good man-" The Doctor perched himself on the railing of the center hub of walkway, "-name a place or a time, any time, and I'll take you there exactly." His eyes had taken up a spark of amusement. He couldn't wait to shock Castiel. It was always a rewarding experience, being able to show off to new guests.

A time machine? Castiel was immediately troubled by this. A human being with the power to time travel? Of course, he wasn't yet aware of The Doctor's species, but this all by itself bothered Castiel. This man, despite his friendly demeanor, felt threatening. A man who had this sort of power at his disposal could become corrupted easily. The angel couldn't shake this bad feeling that he was getting from the Doctor. Even still, this presence that was here in the "TARDIS" was nearly overwhelming. Maybe The Doctor couldn't feel it, but a sentient being like Castiel could. Call it a "sixth sense", if you will, but the feeling that he had gotten earlier felt more concentrated. It was carding though his Grace, like invasive fingers, ruffling and tearing at the feathers of his absent wings. He didn't like this feeling, not one bit.

"I doubt you'll be able to get me back to my destination," Castiel told the Doctor, who had willingly just offered him a free ride to anywhere in time and space. He could easily remove himself from this place in a blink, but he felt compelled to stay, despite the intrusion that groped about his Grace. The angel felt compelled to prolong his observance of this strange man.

"What?" the man scoffed lightly, "I'll bet I can prove you wrong~" he teased.

"Then you've lost your bet," the stubbled angel returned abruptly.

"Really~? Where do you want to go?" the man tucked up a knee towards his head and propped his head on it, sandwiching an arm in between them. His interest in Castiel was only climbing.

"Not to a place you could ever reach."

"Well, I did manage to cross whole dimensions a few times before, if that's what you're getting at~" the bow tie-clad man unfixed his tucked up pose. "Where are you from? Earthling?" It was naturally the Doctor's first assumption, given Castiel's appearance.

"No."

Castiel suddenly felt a shudder run right through him from head to toe. This invisible presence was getting a little too touchy now. The man peeked up with concern.

"Are you all right?"

"It's-" Castiel looked at the light again, "—There." The man pointed a rounded finger at the glowing columns. The Doctor looked. "Something is-" he suddenly found himself panting. "-touching me—" The angel was nearly about to be driven mad by these prods, pokes and tears. He wrestled to get out of his trench coat. The energy was tickling him now and his nerve endings felt wiry.

It took a few moments before the Doctor realized what was happening. He jumped up and faced the console.

"Stop it," he ordered firmly, "Leave him alone!"

Although he was intent on deterring the TARDIS to save his new guest, the Doctor felt a raw sting of jealousy as well. He was a romantic man, and he loved his TARDIS dearly. She had been with him since the beginning, and she was the only Companion that never left him. And he knew very well that the TARDIS was a living being who loved him back. Her Doctor. Like man and wife. So why was she taking such fascination in this new arrival?

The Doctor could see now that Castiel was different. Aside from his blatant denial of being human, he understood that somehow, Castiel was almost "in sync" with the TARDIS. He had some sort of energy about him, and it had been enough to arouse curiosity from The Doctor's beloved. Albeit this curiously was bordering nearly sexual boundaries by non-human standards. But the TARDIS didn't know any better. She wasn't human, she had millions of things on her mind, all at once. She didn't know anything about basic decency. In fact, she was likely not even aware that she was essentially groping an angel.

Castiel huffed in sudden relief when the tension vanished. The fingers of energy ceased to comb through his Grace, withdrawing, and Castiel was doubled over the railing, catching his breath. The Doctor rushed to help him.

"I am so sorry-" he apologized, pulling Castiel back up, "The TARDIS has an insatiable curiosity."

The angel took a breather and The Doctor waited for him. His feathers still felt ruffled, and he would have to take time to groom his Grace when he could. The Doctor asked again if he was all right.

"Yes," the dark-haired man huffed, despite still feeling flustered from earlier's attention. "... That energy. That was from your ship?"

"Yes," the Doctor answered, "I don't think you'd argue if I told you that the TARDIS is alive."

Castiel didn't argue the point. The Doctor continued, crossing his legs from where he was sitting on the railing again, and looked at the console. "She was fascinated by you. And I'm curious as well. What are you?"

Castiel took another breath.

"...I'm an Angel of The Lord."

Hey guys~ So here's the deal. I'm actually working on three Supernatural fics simultaneously (this one, "I Thought it was Just a Story" [also a SuperWho crossover], and "Wavelength Discord"), so my update plan will be a bit haphazard. I plan to rotate between each fic and update chapter by chapter as I go along. Hopefully. Or I may just update by how long a fic plot holds my interest.;;;

But between school looming on the horizon and work, I can't promise immediate updates.

Thanks for reading~ Feedback is very appreciated. It keeps me motivated to write.