A/N:I do not know a lot about spy-world, or about MI-6. This fan fiction is not supposed to be judged on it's technical merit. I am just having a bit of fun. I hope you guys enjoy it.

"No."

"Come now Merlin, you know you can't refuse me." Arthur wheedles.

"I can and I am doing it. No. Not happening. Not ever. Nope." Merlin tries to ignore the blond agent sitting across his desk who has been annoying him for the better part of the last hour and pretends to concentrate on his laptop. He needs to finish the report on the new type of missiles his team has been working on and present it to the chief as soon as possible. He really does not have time for Arthur and his obnoxiousness.

"You don't actually mean it. I know."

"I do. I swear to the God I completely mean it. I am saying no."

"No you aren't. That's ridiculous. Nobody ever says no to me."

"Just because you are old, does not mean it's too late to gain new experiences."

"Please Merlin?" Arthur makes an annoyingly earnest face which is infuriatingly effective, so Merlin looks away quickly.

"Why would I ever agree to your outrageous plan?"

"Umm… because I am your favorite agent?"

Merlin snorts at that and looks up to see said agent looking fake affronted- he has a hand on his heart and tears shining in his eyes. It was necessary for secret agents to be good at acting but Arthur was positively a drama queen.

"When did I ever give you that impression?" Merlin is not effected by those eyes anymore. Not after working with the agent for the last two years.

"You make me exploding pens. It's obvious. I am your favorite Merlin. No need to pretend otherwise." The tears are gone and are replaced by a smolder. That doesn't work on Merlin anymore either… not much anyway.

"Leon is my favorite. He is responsible and returns his gadgets without damaging them… doesn't break connection whenever he fancies, and does not ask me to get involved in ridiculous plans." Merlin starts typing up the report, knowing he would have to redo it when the blond prat decides to finally leave him in peace. It's a clear dismissal but apparently Arthur has not learned the meaning of being rejected.

"Merlin come on. Please." The tone is different this time. He sounds like he really is requesting rather than demanding and that makes Merlin pause his fingers.

"Why me?" He looks up in genuine curiosity.

"Because you are the best." There is no hint of sarcasm in the statement and that's when Merlin knows he is going to agree. Damn it.

"I am pants at any sort of subterfuge." Doesn't mean he is going to make it easy for Arthur though.

"I don't need you for subterfuge. I need you to be my eyes and ears and communications specialist. I don't want to go in blind."

"You could take Morgana. She is available and she is pretty good with electronics and codes."

"Yes but she isn't you."

"Yes. She is a field agent. Not the head of technical support and R&D for the entirety of MI6."

"Exactly. She isn't as good as you."

"I do have better things to do. More important ones."

"Don't make me involve the chief." Arthur threatens. There couldn't be an emptier threat than that though.

"Oh please. We both know Gaius likes me the best. Also… I am your superior."

"Aaarrghhh." Arthur bangs his head on the desk. "Do you want me to die? Even if I am not your favorite, you surely don't want me to die right?"

"No one is going to die. You have always handled yourself amiably in field."

"I am going to die." Arthur doesn't look up and moans. "I am going to definitely die without you."

Merlin has always been awful at saying no to Arthur. It was a flaw that he was working on. It needed a lot more practice and work though, because he hadn't succeeded in the endeavor till now. In his defense, usually Arthur asked for small- albeit inconvenient- things, mostly relating to some sort of gadgets he had either seen in sci-fi movies or dreamt of. Merlin always tried to oblige and provide them- because he needed his agents to have the best things and because he definitely loved the challenge of creating the impossible; it was not because he enjoyed seeing the child like joy on Arthur's face when he managed to exceed his expectations.

Arthur was not his favorite agent.

He was annoying and arrogant; very used to getting his own way, and horrible at following orders or keeping his com line open throughout his missions. Arthur also had the worst track record with the gadgets and they almost never came back whole- even the extremely expensive experimental ones that Merlin specially requests to be brought back in one piece.

But he also had the best completion record with his missions, the most compassion among a group of people who could be called glorified assassins, and the most dazzling smile- crooked teeth included. For some reason he had also made it his life mission to involve Merlin personally in every single one of his stupid harebrained plans, and insisted on Merlin being the voice on his coms whenever he was on field. The number of times he had taken out and smashed his ear piece when someone else took over were astounding.

Merlin was only human. He was always going to cave. Arthur miserably moaning on his desk was the last straw.

"Alright."

Arthur shot up straight and grinned.

"Alright? You mean you will do it?"

"Isn't that what alright means?"

"No, no, no. I am just enjoying the moment. So… you will accompany me to Cenred's castle as my plus one?"

"Do you want me to change my mind? Because this is definitely making me change my mind." Merlin warns. Ugh… why had he developed a soft spot for such a clot pole?

"No. This is the best thing ever. I am not going to die after all. I could kiss you Merlin. You just saved my life." Arthur thanks vehemently, so clearly pleased, and Merlin's heart skips a few beats.

"Yeah well. It's not the first time."

"I live to be annoying pain in your ass after all."

"Oh definitely." Arthur grins and turns to leave, probably to go and explain his plan to the chief. Merlin calls out before he has left the room. "Oh and Arthur?"

"Yes?"

"You are a massive Prat."

A/N:I will hopefully be updating it daily/every alternate day, and it would be something like 6 or 7 chapters. Please tell me what you think. :D