Disclaimer: I don't own Naruto.
Staying Warm
Sakura fumbled with matches, ones that had received a soaking as she'd fallen into a river earlier, to strike equally-damp timber in the hopes of persuading a flame to catch. Smoke curled as the stubborn wood decided to smoulder, but not light. She cursed as her fingers dropped the box, the small sticks spilling everywhere. Numb fingers couldn't retrieve them. Sasuke laughed quietly behind her, a sound she was still getting used to with its pure inflections of mirth, and made a series of hand signs now as familiar to her as they were to him.
"Katon: Gōkakyū no Jutsu."