"Would you like me to walk you through the lessons or would you like me to simply show you with experience?"

"Surprise me. You always do."

Without warning Cas grinned wickedly and he began fighting him with far more strength and tactic than he fought the prince with and Uther immediately realized that. He looked to his son and noticed that his face had paled slightly as he watched with fascination at the two men who didn't bother to wear armor and who seemed to be so incredibly in sync when sparring it almost seemed that they were merely playing. It was almost nothing but parry after parry and dodge after dodge. As he looked between his son and the sparring match he found himself grinning. "What do you make of the servant and his king, Arthur?"

Arthur closed his dropped jaw and looked at his father for second as if he would find the answer there but instead he found patience and amusement. So, he decided to return to the sparring match and noticed that Dean had actually managed to land a blow to Cas' right arm with his sword, but he only managed to cut the fabric, and then almost as if it were inevitable they were back in sync once more. "The way they fight...they are...well it's hard to describe, father, but...it actually goes further than just sparring...they have a trust with one another that seems to go past master and servant. It's almost as if...I know it's ridiculous to say this because I haven't known them for more than a day, but it's as if they are two sides of the same coin."

At his words Merlin dropped everything he was holding, due to the shock of the words he has heard all too often. The fact that he also knew something about Dean and Castiel that the King and his son didn't know didn't help matters at all. "Merlin will you pick those up?" Uther asked as he rolled his eyes, not even having to look at Merlin to know that he was the one who dropped the items nearby.

"Y-Yes sire." He stuttered out as he picked up the clothing and pieces of armor he was holding. Once he held them in his arms again he watched with pure fascination as Dean and Castiel fought in sync, with Castiel landing a few more blows and cuts on Dean than Dean had to him. At that moment he noticed that neither of them held a look of focus and concentration that Arthur wore because it was necessary. It was almost as if them sparring like this was as easy as breathing, but he could tell that Dean was no where near as skilled with a sword as Castiel was. He knew they were from the future, but there was obviously a lot he still didn't know, and the way they smiled at each other as they fought was almost similar to when he and Arthur bantered back and forth with each other. That's when it hit him. One of the reasons Dean reminds him a lot of Arthur, and the reason he almost gave away to them yesterday. Dean and Castiel are alike to him and Arthur.

Soon, Dean found himself pinned down by Cas and Cas was holding a sword to his throat. "Do you want to give up?"

"To you!?" Dean shouted with a laugh bursting from his throat as he tossed Cas off and grabbed his sword as he steadied himself.

"Do you? Do you want to give up?" Cas asked with a determined yet amused expression.

"Oh, not a chance old friend!"

Merlin's jaw dropped as he remembered Him and Arthur saying the same things to each other aside from Dean's last comment. They had said it in their second meeting and they wore similar expressions as well. "How many blows have they landed to one another, I've lost count." Merlin asked Arthur as he tried to ease the shocked tension from his chest.

"Castiel has landed three blows to dean, cut him twice, and pinned him down once. Dean has landed three blows to Castiel and cut him three times, but he only attacks the fabric. Possibly to unnerve his highly skilled servant."

"So...does that mean their evenly matched?"

"It seems like. You know...I never thought a servant capable of such fighting."

"Well, if you know where to look, who knows what you may find?" Merlin quipped as he continued to watch their sparring match.

Dean had finally managed to knock Cas off of his feet and pin him much the same way he did to Dean. He huffed out a short chuckle. "Get off me, Assbutt!"

"Assbutt? That's the insult you want to use? It's not even a word, Castiel." Dean got up and waited for Cas to do the same, and they were both half smiling half laughing.

At their banter, Arthur shot a look to Merlin who's jaw was dropped. They seemed to catch on to the same thing. King Dean and Castiel are alike to themselves. King Dean is like him in some ways, and Castiel is alike to Merlin, and he couldn't explain it, but he knew they were alike to him and his own servant in more than just banter and the way they fought and spoke to each other, and about each other. It was like a strong pull that had a voice which practically screamed at him that the four of them were alike in uncanny ways. What those other ways were, he couldn't explain it for the life of him. He had only known them for a little less than a day, but he couldn't deny what he had been witnessing since they arrived. "It's a real word to me, and it more than suits you, Dean." Cas let out a soft laugh.

"It's odd seeing you laugh and smile so often, are you sure you're alright? Perhaps you hit your head too hard on something?" Dean quipped but instantly regretted it because that's when Cas headbutted him to get him away from the close distance Dean had made right after he got to his feet.

"Yeah, I hit my head alright. I hit it on something foolish."

"Oh, foolish am I?" Dean laughed out and they continued their sparring match.

Sam had finally made his way and noticed that Cas and Dean were sparring, and that the king and his son along with Merlin were watching with stunned fascination. He laughed to himself as he watched them fight and he stood next to King Uther. "They are always like this." Sam stated once he was next to the king. "There's not always weapons involved, but they banter back and forth constantly. They test each other's limits. At times they can be inappropriate, but they are still friends no matter what. They have truly fought each other many times and have greatly injured one another, but I know without a doubt that if the occasion called for it, they would risk their lives for one another without thinking of their own safety. Come to think of it they actually have done that before, and where one goes the other is quick to follow."

Sam glanced at the men standing next to him and noticed the king had nodded his head and agreement as he continued to watch the match, but Merlin and Arthur were looking at each other with knowing looks that also reflected looks of astonishment, wonder, curiosity, and confusion. "It seems that your brother and servant are much alike to my son and his servant. They are the same way. For the life of me, I cannot fathom why or how, but they are."

'That would explain the looks they just gave each other. Perhaps I'll ask Merlin about it later.' At that thought Dean had victoriously managed to grab Cas's sword.

Cas laughed and held his hands up. "Well done Dean." At Cas' laugh, Sam's eyes went wide but he decided to wait and watch before saying anything.

"Does this mean I won the match?"

"Yes, you won...this match. Who's to say you'll win the next one. However, that was very skillful of you. You are better with a sword than you thought."

"Seems so." Dean held both swords and nodded his head as he placed them where all of the other swords seemed to be placed that needed to be repaired, sharpened, or cleaned. Then, he turned his gaze and noticed Sam was standing next to the king, who was standing next to Arthur, who was standing next to Merlin.

"Did the two of you have fun?" Sam asked with a raised brow.

"Actually yes!" Cas stated with excitement in his voice. "I haven't had that much fun since I sparred with five of my brothers at once when I was in training."

"Really, who did you spar with?" Sam asked, genuinely curious.

"I sparred with Balthazar, Uriel, Samandriel, Michael and Gabriel."

"Huh, with names like those, your father must've been a religious sort of man."

"Oh, he certainly was." Cas replied with a grin.

"Your king told me about how your kin betrayed you. Are there those out of the five that you listed that are still loyal to you?"

"Well, if they were still alive it would've been Gabriel and Balthazar. We got along well and Gabriel was a closer brother to me than the rest even though he liked to act childish at times. They were good to me. They trusted Dean and his brother to look after me. In fact after they saw how Dean and I treated each other, they ruled our friendship inevitable."

"Like destiny?" Merlin cautiously asked.

Cas looked at him and looked at Dean, and then back at him and nodded. "That seems like an adequate word. Destiny."

"Yes, that actually does sound accurate. Especially with my destiny that my father had a huge roll in." Dean stated and sighed.

"Wow, that's impressive Dean. You accept that you have a destiny. I think it's amusing that it was destined for you and Castiel to fight side by side."

"Find it amusing all you like, Samuel. You'll never hear me admit it again." Dean chuckled and then noticed that his cuts and bruises were starting to get sore. He had thought about asking Cas to heal them later, but then he would be suspected of sorcery if the wounds healed over night, and that would mess up everything they came here to do. "Do I have your permission, King Uther, to go see your court physician?"

"Of course. Merlin will lead you there."

"Thank you. Come on Castiel."