I'm not sure who originally came up with the witches, having seen them in more than a few fics, but credit for them to whoever that was :)
Roxy smirked as she walked through the halls of Kingsman HQ, Merlin was on board with her game, he was willing to play. She knew that he was willing to play in private, that had been obvious, but the fact that he was indulging himself just as she wanted him to in front of others for both of their pleasure was gratifying. She had wondered if he would back out, Kingsman HQ wasn't really the place for some kinky foreplay, but he had come through for her. She supposed that it would be different if one of them got caught, it wasn't exactly professional of them; but it was often said that the harder you work the harder you play. The stress and frustration that often came from their work had to be released in some way, most Kingsman used the firing range to sort out their frustrations, but Roxy was a lot different than the male knights that she was serving alongside; her methods were unique. She hadn't originally gotten into the situation to seduce Merlin, but it soon became her main objective.
After a brief stop at her suite to shower and change her outfit she made her way to Merlin's office, hoping that he wasn't busy and that she would be able to convince him to come into London to have dinner with her. He was sat in his office, staring at his monitors while he worked furiously sketching something out on paper, not even looking at what he was drawing.
"What are you doing?" Roxy asked as she came up behind him, looking over his shoulder at the screens, the barracks staring back at her.
"Monitoring the recruits and working on weapon design." Merlin replied, still not looking away from the screen.
"Can you get someone else to monitor them for the night? I'd like to take you to dinner. I was thinking we could take some time to get to know each other outside of work." Roxy suggested, as she looked down at what he was drawing; it appeared to be a pair of shoes, shoes that had to be for her.
"Are they for me?" Roxy asked, staring at the drawing.
"I'm working out how to give any pair of shoes you may have to wear in the field the same capabilities as the Oxfords." Merlin replied, "If I can prevent it none of our agents will have a handicap in any way."
Roxy smiled at him, before she set about trying to convince him to join her for dinner. A look of triumph crossed her face as he called for a junior technician to join them in his office. He went over instructions for the younger man on how to monitor the recruits, anything that should be noted and instructions to wake them at 4am and sending them on a run of the perimeter followed by a swim in full pack. He then sent him back to his own terminal to patch him into the feeds, instructing him that any problems he should contact one of the witches.
He then tapped into his glasses feed, letting both Arthur and the witches know that he was leaving the mansion and that he could be contacted through his glasses if they needed him. He asked the witches to take control of any feeds that came up for the evening before standing and offering Roxy his arm. He escorted her out of his office and down the hall towards his suite, inviting her in while he got changed for dinner. Once he was ready they took the tube back to the shop at Saville Row, then caught a taxi to the restaurant that Roxy had made reservations at.
It was a nice meal, Roxy really wanted to take the opportunity to get to know the man behind the jumpers and glasses, and they spent the time talking about their lives. Roxy was sure that Merlin knew a lot about her from her file, he had unrestricted access to the files; unfortunately she couldn't say the same. She didn't know much about him, she didn't even know his real name; although she intended to find out as much as she could about him.
After they had finished their meal they walked to the nearest tube station, Merlin leading her down into the station and onto a train. She didn't know where they were going, but she trusted the man so she followed him, knowing it wouldn't be anywhere too far, as they both had to be at the mansion the next day. He led her onto a train, and into a corner of the carriage, he stood in the corner, with her in front of him; whether this was because it was a defendable position or not she was unsure, but as the carriage filled up around them she found she didn't mind.
She could see the looks they were getting though, Merlins' arm around her waist, a surprise to her as well, seemed to be earning them quite a few considering looks. She was comfortable enough to ignore them, she doubted anyone would actually come out and say something, although she could tell that the group of young men around her age wanted to.
"You like their eyes on you, you can feel the stares can't you? They're wondering why you are with me, thinking that they would be better for you, wondering what you see in me." Merlin whispered in her ear, and he was right, she could feel the stares, she revelled in them. "I wonder what they would think if they knew exactly what you were like, what you really want to get up to, and what you do for a living, they'd be terrified. Such an in control woman, they wouldn't know what to do with you."
Roxy nodded her head slightly, indicating that she agreed with his whispered words, baring her neck to Merlin in the hopes that he'd kiss it, she had said no real touch or contact until the end of the week, but kisses were as much foreplay as their game was. He seemed to take it as the invitation she had meant it to be and pressed a light kiss to her neck, pressing himself against her from behind as he did so.
He was hard, she could feel him against her, and in that moment she knew exactly what he was planning. As the hand that wasn't around her waist was trailed down her back she shivered, knowing that she was right. Merlin continued to whisper in her ear, teasing her with his words, stopping only to press small kisses to her neck. Roxy knew that he was stroking himself, using her body to block the rest of the carriage from seeing what he was doing, and she wished that she could join him. It was impossible though, if she didn't want to get caught or arrested, the group of guys as well as a few of the other passengers were still staring at them after all.
"They have no idea what game we are playing, do they?" Merlin whispered in her ear, "They have no idea that you just want to ignore that they are all here watching you and stroke yourself until you come apart. They have no idea how filthy you are Roxanne."
Roxy groaned, he could read her so well. She really did want to ignore the rest of the passengers, just forget they were there and enjoy herself. "Yes Merlin." She spoke quietly, knowing that he would hear her.
"Angus." He whispered in her ear, "Say my name Roxanne."
"Angus." She whispered back, feeling the motion of his hand behind her stop as he pressed more fully against her, burying his face in her neck as his climax rushed through him. It felt like they stood like that for ages, but in reality it was mere seconds, as the train pulled to a stop at a station.
Merlin pushed her forward, indicating that they were getting off the train. They easily fell in with the rest of the crowd leaving the train and the station. Once outside Roxy looked about, trying to figure out where they were, and where they were going. Their destination appeared to be a Kingsman cab that was waiting for them, taking them back to the mansion; Merlin must have prepared for his little train journey in advance.
When they got back to the mansion Merlin walked her to her suite, kissing her chastely before wishing her goodnight.
"Goodnight Angus." Roxy told him before entering her rooms. He had given her his name, she wouldn't use it often she knew that, it would be a private thing. It was intimate, probably a lot more intimate than they had been, his name was something that he kept to himself, he had fully embraced his codename after all.
As she pushed away from the back of the door and heading towards the shower, she thought about Merlin and his actions that day, he was definitely winning at the moment. She would have to think of something incredible to top his acts, she was going to win this challenge.