His grin was slow and acknowledging. Flash-speed. Always odd to see in someone not-Flash, but now that he knew to expect it...
He dropped the towel, cleared his head, and took a two-step run to the first large branch. Handspring to a modified back tuck, snapping out his legs to gain height, twisting to land on his hands. He balanced for a half a moment, pacing himself to the slower, more exact movements of a performer rather than the faster, purposefully unpredictable movements of a fighter.
She just needed a minute to get a look at how movement looked, when you didn't have chakra.
Then he was falling, backward toward the ground, hitting a thin green limb with his hips and using it to slow the drop, spinning around it and grabbing hold with his hands as it reached the lowest point of its swing. It rebounded, flinging him with it, and he tucked tight to bullet through the air, only to snap out hands and legs both a breath later. Arced his body, twisted feet-down, picked his injured leg up and landed above where she'd been.
Everything had been so much slower than he was used to that he had to resist the urge to snap his arms up like a gymnast finishing a run. He looked around until he spotted Kakashi, settling his injured foot on the branch. "Faster?"