It's all AU.

Koschei spotted a familiar blond head and, forgetting all dignity, bolted towards him. "Thete! There you are."

Jack was sitting on the edge of a pier, legs dangling above the water. He had a cup of coffee, was squinting a bit against the setting sun and was utterly content with his lot in 'life'. When he heard a foot step somewhere near him he said, warmly, "Come pull up a board."

Koschei looked up from his book with caution. "Did we meet when I first got here?" he asked the Doctor in a black leather jacket.

Well, there had been talk of poisoning tea. He'd assumed that was a joke. Now he wasn't so sure.

**potential spoiler warning-character is from post series 3 TW**

It was late morning and he was sober. As unusual as this was over recent times, John was nonetheless in a chipper mood as he looked longingly through the window of the store and at a sonic blaster in particular that was on prominent display there. He didn't move position as he started to speak. "Tsh. See the problem is with this place being free is that it tends to take the fun sting out of procurement, don't you find? D'you reckon that's a Villengard original, or a copy?" 

It might have looked impressive that he'd figured out someone was behind him, but in fact it'd been the shadow of the figure at the edge of his vision that'd given them away. Still, a little showiness never did any harm.

Koschei was on the room of a tall building, working on a sensor array to gather data and start on his 'trick time into moving' project. In a slightly foul mood that he couldn't find Theta to show off to and talk at, but not enough to stop working. Driven, was the word for it.

Working made the drums manageable, if not an any way quieter. Everything feel into rhythm. Funny how that worked.

Koschei was in a corner of the hotel lobby, half reading a book, half eying everyone warily. Appearently anyone could be crazy and genocidal here, if his conversation with a future version of Thete was anything to go by.

Continued from here.

His gaze slid sideways. He didn't have clue what to do with the gentleness. As opposed to disapproval.

It was an extraordinarily gorgeous day even for fake New New York. The Master and Doctor had taken over a corner of Central Park to try to gather together cricket teams, from visitors or natives, whoever knew or was willing to learn the basic rules and play. Captaining opposing teams, of course. The easy banter back and forth indicated high, good spirits.

After Mulder had found him and pointed him to Koschei, Theta went, quickly. He entered the room quietly though, climbing into bed beside Koschei and stroking his chest gently, "Hey."

Fox was watching gay porn in the hotel lobby, with an extremely confused expression. "That's really not hot," he told someone who just happened to be passing at the (wrong) moment.

Theta climbed onto Koschei's lap, burying his face against the other boy's shoulder. "I hate everyone ever." he said ill naturedly.

"So," Jack announced, coming up and standing beside Koschei by the window. "I think the view's excellent,but the height. That's something else."

Koschei settled at a table at an outdoor cafe with a book, needing the time away from his TARDIS to clear his mind. He was trying very hard not to think about what might have been with Theta, and more watching the people that passed by than reading his book. One face in particular caught his attention, and he paused a moment, staring. He really should have expected younger versions of himself here.

Koschei found his way down to the river. He was watching the boats go by, intrigued. He turned and said conversationally, pointing to a sailboat, "Somewhat more complicated than a kite, I imagine."

After leaving Jack, Theta had wandered around, getting to know the city and being a little bit in awe of the blue, blue sky.

He had a lolly in his mouth, that he damn near choked on when he looked down from the sky and saw Koschei. At the right age, his age. He gagged on the lolly, then dropped it, and ran for him, half leaping onto him.

Koschei wandered out of the 5th dimensional mathematics section of the library, finally done with studying, and off to find Theta who...hadn't been studying. Into a busy street. Still in dark academic robes.

"That's...not right," he said slowly, confused.