I actually wrote a Janto fic, for type40consultingdetective:
Light in the Dark – Jack and Ianto are trapped after an alien gives them the slip.
teaser below the cut
Jack watched Ianto check the lock for the fourth time. “We’re stuck. They’ll notice we’re missing in the morning when there isn’t any coffee.”
Ianto sighed and rolled his eyes. Jack was making himself comfortable against the wall. The container wasn’t that big, but the alien they’d been chasing had managed to lure them inside and lock the door. Jack turned his torch on his watch. “We’ve got a few hours.”
Annoyed, Ianto sat against the opposite wall and shut off his own light. No point in wasting battery. Jack shut off his and a heavy darkness settled over them. Ianto shifted, uncomfortable. And a bit nervous.
“I never liked pitch blackness either,” said Jack, turning his torch back on and setting it between them. “Means bad things in space.”
Ianto made a noise, but offered no other comment. For once, Jack seemed disinclined to speak further, watching the torch between them.
This time it was Ianto who moved first, shifting around until he was next to Jack, touching his hand. Jack put an arm around Ianto and pulled him against his chest. Ianto huffed a bit at the gesture, but slowly relaxed in Jack’s arms.
There was silence for a little while longer. Ianto was just starting to nod off when he felt Jack kiss the side of his neck. “Jack…”