By the time they returned to the inn that evening, the last color was draining out of the sky, and Naoki wasted no time climbing onto his bed, legs crossed, a single green leaf already pinched between two fingers.
"Not so fast," Tsunade said from the doorway, arms crossed. "Remember what I told you. Little bits. This isn't a race."
"I know, I know." He was already ignoring her, brow furrowed, pressing the leaf flat against his forehead.
It fluttered to the floor within a second — not enough chakra to hold it there at all.
He tried again, pushing harder this time, and the leaf shot straight off his forehead like it had been flicked, sailing clear across the room before it landed somewhere near the door. Too much, and by a wide margin.
"You're overcorrecting," Tsunade said, not looking up from the cup of tea she was nursing on the other bed. "Too little, it falls. Too much, and you'll send it flying before it's even had a chance to stick. You've gotta find the middle, and right now you're just swinging between the two."
Naoki huffed, picked up a fresh leaf from the small pile Shizune had left him, and tried again. It sat against his skin a moment — one second, maybe two — before sliding off into his lap, whole this time at least.
"Better," Shizune said from the doorway, arriving with a fresh cup of tea for Tsunade. "You held it a bit longer that time. Try not to tense your shoulders — I can see you doing it from here."
He hadn't realized he'd been doing that at all. He rolled his shoulders once, exhaled, and tried again.
The leaf held for three full seconds before it slipped.
He kept at it long after Shizune had gone to bed and Tsunade had put out the lamp, the room dark except for a sliver of moonlight through the window. By the time his eyes grew too heavy to keep open, he'd worked his way up to holding one leaf steady for nearly ten seconds at a stretch — no small thing, though it felt like nothing compared to what he wanted. He fell asleep with a leaf still resting on his forehead and a small pile of fallen ones scattered across the blanket around him.
Morning brought them down to the river on the edge of the village, mist curling low over the water where it caught the early light, the air cool enough that Naoki could see his own breath for the first few minutes. He dropped into his physical exercises without needing to be told — push-ups first, his arms trembling by the twentieth, then sit-ups, the ache in his stomach sharp and immediate.
"Keep your core tight!" Tsunade called from the water's edge, arms crossed, watching with her usual sharp eye. "You're not just building muscle. You're building the foundation your chakra network sits on."
"Breathe evenly," Shizune added, kneeling beside him to adjust the angle of his elbow with two fingers. "In through the nose, out through the mouth. You're holding your breath on the way down — that's why your form keeps slipping."
He corrected it, and felt the difference at once — less strain through his shoulders, more control in the motion. "Oh. That's easier."
"Told you." Shizune moved on to his footing before the next round of katas, tapping the back of his ankle with her own. "Weight forward. Right now a strong breeze could put you on the ground."
By midmorning his hair was plastered to his forehead with sweat, and every muscle in his body had settled into a dull, constant ache. Between sets, he kept reaching for a leaf and pressing it to his skin, chasing the same careful middle ground he'd found the night before — a little more time each try, though never quite as much as he wanted, and more than once sending a leaf shooting off his forehead when his focus slipped and too much chakra escaped at once.
It wasn't until well into the afternoon of the second day that something finally shifted.
He'd spent the morning failing the same way he had the day before, and by early afternoon his patience had worn thin enough that he almost gave up trying to force it. Instead, sitting by the riverbank with his eyes half-closed, he stopped pushing the chakra out and simply let it move — the way water finds its own path downhill without needing to be told which way to go. He felt it settle low in his stomach, warm and steady, and rather than shove it toward the leaf, he simply loosened his hold on it and let it drift there on its own.
His shoulders dropped. The leaf stayed exactly where it was.
He sat with that feeling for a long moment, almost afraid that moving would break it, before he dared add a second leaf to the back of his other hand. It settled just as easily as the first.
By the time the sun had dropped low enough to turn the river gold, and after what felt like hours of careful, patient repetition — testing the feeling again and again, refining it each time — he managed to hold a third, balanced on his shoulder, without losing the other two.
"Tsuna-neesan! Shizune-neesan!" Naoki's voice cracked with excitement. "Look! Three!"
Tsunade turned properly this time, cup still in hand, and went quiet for a moment taking it in. Three leaves, not one of them so much as trembling.
"Well, well." A slow grin spread across her face. "Took you two whole days, but you got there."
"Yesterday you couldn't hold one for more than a few seconds," Shizune said, crouching down beside him, genuine surprise in her voice. "This is real progress, Naoki-kun."
Naoki beamed, chest puffed out, right up until the leaf on his shoulder slipped free and drifted down into the grass. His face fell for half a second before he laughed it off. "It was still three at the same time. That counts."
"It counts," Tsunade agreed, ruffling his hair. "Don't let one falling off take that away from you."
He caught her hand before she could pull it back, grinning up at her. "Can I try for four?"
"Not tonight." She said it firmly, but not unkindly. "You've been at this since sunrise. Push any further and you'll be too worn out to hold even one tomorrow."
"Just one more try—"
"Naoki." Her tone didn't rise, but it left no room to argue. "Rest now. Whatever comes next, you'll be sharper for it if you're not running on empty."
He deflated a little, but didn't push further — he knew that tone by now. Shizune knelt down beside him and started gathering the fallen leaves scattered across the grass, glancing up at him with a small, knowing smile. "Come on. I'll race you back to the inn."
That got him moving faster than any lecture could have.