The fire crackled in a shallow pit Torune's puppet had dug between two boulders. They'd finished the last of their mission an hour ago and made camp on a rocky shelf overlooking the crossing. Far enough from the treeline to see anything coming. Close enough to the river to hear the water.
Chiyo sat on a flat stone with her back to the larger boulder. She'd cooked. Not well, but it was eatable. Rice, dried fish, and a broth made from whatever herbs she'd pulled from the riverbank. Nobody complained. Field food was field food.
The three chunin sat across from her. Karura was outside of Protector so that she could eat. Sayo cross-legged with her bowl in her lap. Torune sitting with his back straight because sitting any other way made him feel uncomfortable.
Torune set his empty bowl down and looked at Protector's open chest panel, at the puppet itself. It was larger than any regular puppet. Bulky and broad, built from heavy composite wood reinforced with iron plating at the shoulders, chest, and spine. Its head was featureless, a smooth mannequin face with no eyes, no mouth, no expression at all, just a blank oval of sanded wood that stared at nothing. Two tower shields hung from its arms, each one nearly as tall as Karura herself, thick slabs of layered wood and iron with cable housings visible at the wrist joints. A hand-shaped tail extended from its lower back, the fingers curled loosely, the palm housing a strange device that Torune could just barely see glinting in the firelight.
"I've been meaning to ask since I first saw it," he said. "When did you build that one?"
Karura swallowed her rice. "I built it the week after the chunin exam finals."
"In a week?" Torune looked at the puppet's frame. The tower shields mounted on each arm. The hand-shaped tail coiled against the lower back. The featureless mannequin head above the open chest cavity. "This is a week's work?"
"I didn't sleep much…" Karura felt embarrassed to admit.
"What inspired it?" He was studying the puppet, the shields, the cable housings that let the shields be thrown and retracted.
Karura was quiet for a moment. "My fight with Mai."
"During our match, I used ten puppet hands with chakra shield emitters to block her punch. Ten of them. Her fist broke through seven before the remaining three caught it. And the impact still threw me through a wall and nearly beat me." She ran her thumb along Protector's exterior frame.
"I realized that no matter how many puppets I have between me and an enemy, the puppeteer is always the weakest point. Every enemy I'll ever face will try to get past the puppets and hit me directly. That's common sense. Find the puppet master, kill the puppet master, the puppets drop." She patted the puppet. "So I built something that is made to protect me no matter what. No matter how strong my opponent is."
"A defensive puppet… Million, a taijutsu puppet, Reaper, a kenjutsu puppet, Moon, a fan puppet, and now Protector, a defensive puppet…" Torune realized that puppet creation could be far more simple.
Torune looked at her. Instead of a puppet that can do a little bit of everything, she focuses on creating a puppet meant for only one thing and one thing only. He didn't know what to think about that. The simple mind of a child? The unfettered genius of a puppeteer prodigy? He simply sighed with a smile and shook his head.
"You're something else, Karura-chan." he said. He meant it as a compliment.
"Thank you?" Karura wasn't sure how to take that.
Chiyo set her empty bowl on the stone beside her and looked at the three of them.
"I'm going to do something for you three that I don't usually do," she said. "And you shouldn't expect this from other captains on your missions. Most squad captains won't sit you down and teach you anything outside of the mission itself. You learn by doing, you learn by watching, or you don't learn at all. That's how it works for most chunin."
She reached into her vest and pulled out a small bundle wrapped in cloth. She unwrapped it on the stone beside the fire. Three squares of pale paper, each one the size of a playing card.
"But you two got lucky. You got paired with Karura, and Karura is my protege. So tonight, you learn for free."
She held up one of the paper squares.
"Chakra Induction Paper. Made from trees grown and fed with chakra from seedling to harvest. When you channel even a small amount of chakra into it, the paper reacts to your elemental affinity. These are difficult to come by out in the Land of Wind, but we have our ways." She listed the reactions. Fire burns it. Wind cuts it. Lightning wrinkles it. Earth crumbles it. Water soaks it.
"Every shinobi has at least one natural affinity. The element that comes easiest to you. The one your chakra already wants to become." She handed a square to each of them. "Find out what yours is."
Sayo went first. She held the paper between two fingers and channeled chakra into it. The paper wrinkled, creasing inward from the edges in tight folds that compressed toward the center.
"Lightning." Chiyo said.
Torune went next. His paper crumbled. The edges turned to brown dust that fell through his fingers, the center breaking apart until nothing remained but a small pile of dirt on his knee.
"Earth."
Karura held her paper last. She channeled chakra into it.
Three things happened at once.
The paper split down the center, a clean cut that divided it into two halves. Both halves wrinkled, tight creases folding inward. And both wrinkled halves darkened with moisture, the edges going damp as though dipped in water.
Wind. Lightning. Water. Three affinities.
Chiyo stared at the wet, wrinkled, split paper in Karura's hands. Her expression didn't change.
"Before you get too excited, three affinities isn't as rare or valuable as one might think."
"Oh." Karura exhaled with relief.
"It still takes a lot of time to master chakra natures, even ones you have an affinity for. There are several people with four affinities but never master one." Chiyo picked up one of the split halves and examined it. "Wind, Lightning, and Water. That's a versatile combination that can be used in all sorts of ways."
She set the paper down. "But we'll get to combinations later. For now, the fundamentals."
Chiyo explained nature transformation simply. The three levels of mastery. First, strengthen the chakra nature by sustaining its effect on a material. Second, increase the speed and scale of the transformation for combat. Third, merge nature transformation with existing ninjutsu to enhance them. She explained how affinity shortened the learning curve but didn't eliminate it. How most chunin spent at least half a year on the first level alone. How jonin were expected to have mastered at least two natures.
"Which brings me to the reason I'm telling you all of this now." She looked at each of them. "You're chunin. That's the floor. If you want to become jonin, you need more than a vest and a mission record."
Sayo leaned forward. "What are the actual requirements?"
"Mastery of at least two chakra affinities. Proven competent leadership in the field, not just theory but demonstrated ability to command a squad and keep them alive. A mission record that shows consistent performance at B-rank and above. And a solid foundation across all three disciplines: taijutsu, genjutsu, and ninjutsu. You don't need to be a master of all three but you need competence in each. A jonin who can't recognize a genjutsu, or a jonin who can't throw a punch, is not a jonin."
Torune sat quietly for a moment. "I didn't realize how far I still have to go."
"Now you do," Chiyo said. "That's the first step."
Sayo's bored look briefly shifted into something more serious. "My only real strength is genjutsu. My taijutsu is average. My ninjutsu is basic. I've got a lot of training ahead."
"You all do," Chiyo said. "But you're young enough that the training will stick. Start now and maintain it and you'll be ready in a few years instead of a decade like most."
She pulled a set of objects from her pack. A leaf, a stone, and a cup of river water. She set them in front of the fire.
"The leaf is for Wind. Hold it and try to cut it with your chakra alone. The stone is for Earth. Channel chakra into it and try to make it harder. The cup is for Water. Channel chakra into the water and try to make it move without touching it." She paused. "A kunai works best for lightning and Fire works best with an actual fire."
She looked at Karura. "You have three to work on. Start with whichever one feels most natural."
Sayo pulled out a kunai, Karura grabbed the cup of water, and Torune picked up the stone. They trained under Chiyo's instructions and advice. The night sounds of the border filled the gaps between instruction, river water and wind through rocks and the distant call of something that might have been an animal or might have been something else.
Karura's water moved within the first hour. It was rough and not perfect but it was a lot better than not moving at all. Chiyo nodded. Three affinities and enough chakra control to get a result on the first night. She never expected anything less.
She continued working to make the water move more to her control rather than so roughly. Every now and then Sayo had sparks appear on her kunai while Torune had only managed a marginal density change.
During a break, Sayo turned to Karura.
"I've been thinking about something since the exam," Sayo said. Her flat eyes were curious for once. "That modified Transformation Jutsu you used. The one that enlarged your limbs during the fight with Mai. Is that something you could teach?"
Karura looked at her. "The idea isn't that complicated. It's a standard Transformation Jutsu applied to specific body parts instead of the whole body. The hard part is the chakra control needed and the medical knowledge needed."
"Could you teach me?"
"Sure." Karura smiled
Chiyo's eyes flickered. She didn't interrupt but something appeared in her eyes.
Sayo noticed. "You don't approve, Lady Chiyo?"
"I don't disapprove," Chiyo said carefully. "But I have reservations about sharing techniques freely. Karura's modified Transformation Jutsu is an innovation. Innovations are currency in the shinobi world. Once you share something, you can't take it back. And you never know where the person you shared it with will end up in ten years."
"I understand the concern," Karura said. "But hoarding it doesn't help me or the village. If more Sand shinobi can use it, that makes the village stronger overall."
She paused, choosing her next words carefully.
"I already shared the technique with the Kazekage. He was very interested in its applications and I received compensation for the contribution. And Mai was there too, she shared how to open the Eight Inner Gates with him too. Sunagakure can now teach the kinjutsu to shinobi who qualify."
Chiyo's eyebrow rose slightly. She hadn't known that last part. "Mai shared the Eight Gates?"
"She wanted the village to benefit from it. She said there was no point keeping it to herself when other taijutsu specialists could use it."
The Third Kazekage had summoned them both to his office sometime after the finals. Karura arrived first and waited in the corridor. When Mai came around the corner, her arms were still in splints and she was walking with a limp that favored her left leg.
Mai saw Karura in the hallway and stopped walking.
For a moment neither of them moved. Karura opened her mouth. She'd been rehearsing what to say for four days. An apology. An explanation. Something about how the taijutsu wasn't meant to hurt her, how Mai had inspired the style, how she'd wanted to show her what she'd built from watching Mai fight, not prove she was better than her at taijutsu.
None of the words came out.
Mai turned and walked past her into the Kazekage's office without a sound. No screaming. No insults. No "I hate you." Just silence and a closed door.
Inside the office, the Third Kazekage thanked them both for their contributions to the exam and asked each of them to document their innovations for the village's records. Karura explained the modified Transformation Jutsu. Mai, staring at the Kazekage and not once looking in Karura's direction, explained how she found out the location of the gates in her chakra network and opened them.
"How did you find them?" The Third Kazekage asked.
"By coincidence." Mai told a half-truth.
"Coincidence? I never heard of you wearing glasses in the academy. Has your eyesight gotten worse after leaving the academy, Mai?"
"No, but they help me see better. I always needed glasses and it wasn't until I really became a ninja that I realized, I needed every advantage. And just because I thought glasses looked lame wasn't enough of an excuse to not do my best on missions." Mai lied.
"Oh, so your eyesight was always bad?" He realized.
"That's right, Kazekage-sama." Mai nodded.
Karura's stomach tightened. That wasn't the story she'd told Ebizo. If the Kazekage ever compared notes…
And that's also when Karura realized that maybe Mai didn't hate her. If she wasn't willing to tell the Kazekage that she gave her those glasses or the secret about her eyes, then maybe…
When it was over, Karura tried to speak to her again. She caught Mai in the corridor outside the office.
"Mai, please. Can we talk? I just want to..."
Mai ran away with a flushed face. Despite her injuries which looked like they were getting worse with the hobbled run of hers, eventually she rounded the corner and was gone.
Karura stood in the empty corridor and didn't follow. Chasing someone who didn't want to be caught would only make it worse. She knew that. But a small sense of relief sprouted and made her body feel lighter.
Chiyo was quiet for a moment. Her reservations were valid. A technique shared today could end up in enemy hands tomorrow if Torune or Sayo were ever captured, defected, or simply talked to the wrong person. But the girl had already given the technique to the Kazekage himself. Chiyo's concerns, while legitimate, were somewhat moot at this point.
"Do what you want," Chiyo pouted despite her age. "You're a chunin now. Your techniques are your own to share or keep."
Sayo turned back to Karura. "Then here's my offer. You teach me the modified Transformation Jutsu. I teach you a genjutsu."
"Deal," Karura said without hesitation. "And you don't need to offer something in return. I would have taught you anyway."
"I know. But I want to. It's better when it goes both ways." Sayo glanced at Lady Chiyo.
Karura smiled. "Then I'd love to learn."
Torune had been listening. He cleared his throat.
"I don't suppose you'd be willing to teach me how you control ten puppets at once," he said. "I'd pay B-rank mission rates for lessons."
Karura shook her head. "I wouldn't take your money for something like that. And I wish I could give you a technique to learn but it's not really a technique." She rubbed the back of her head, the yellow scarf shifting with the motion. "It takes experience and time. Chakra control and knowing the ins and outs of your puppets so well that the connection feels like an extension of your body. There's no shortcut. You just... have to keep doing it until one day you can control your puppets with one chakra thread."
"But you're eight…" Torune was confused. "You haven't had years."
Karura opened her mouth. Closed it. She couldn't answer that. Not honestly at least. The truth was Tenfold, multiplying every hour of practice by ten, compressing years of development into months. But she couldn't say that.
She stammered. "I- well- it's- I started training very early and..."
Chiyo rescued her.
"She's a genius, Torune." Chiyo started bragging. "A genius among geniuses. What she has isn't something that can be taught or shared or bottled for someone else. Her hands move the way they do because her mind works in a way that nobody else's does. It's not fair. It's not replicable. It simply is."
The fire crackled. Torune looked at Karura, at Chiyo, back at Karura.
"I see." he said quietly.
"That doesn't mean you give up," Chiyo added. Her voice softened, just slightly. "All the hard work in the world might not bridge the gap between you and her. But without it, you'd never come close to what you're capable of. Work within your limits. Push them when you can. Accept the ones you can't push. That's all any of us can do."
Torune nodded. He picked up his stone and resumed channeling earth chakra into it. The acceptance in his expression wasn't defeat.
The fire burned lower. The river murmured. Stars spread across the desert sky in a blanket of cold light.
After the nature training wound down, Chiyo pulled Karura aside. She reached into her pack and produced a small sealed container. Inside, a fish, caught from the river earlier.
"Medical ninjutsu," Chiyo said, setting the fish on the stone beside the fire. "I was going to start you on this eventually. Tonight works as well as any."
"Medical ninjutsu?" Karura's eyes widened.
"The Mystical Palm Technique. You channel chakra into living tissue, converted into a state that the body's cells can accept without rejection. If you do it correctly, damaged cells repair themselves at an accelerated rate. If you do it wrong, you kill the patient." She made a small cut on the fish's side with a kunai. "Heal that."
Sayo and Torune watched from the fire.
"Could we learn too?" Sayo asked.
Chiyo glanced over her shoulder. "Medical ninjutsu isn't for everyone. It requires expert chakra control, above-average intelligence, and advanced knowledge of the body. Most shinobi never bother because they lack the control to do it safely. But you're welcome to try."
She produced two more fish.
They worked through the night. Chiyo instructed them, shared knowledge on anatomy, and explained the theory between attempts. How medical chakra needed to be converted into a frequency the body's cells would accept. How too much chakra disrupted circulation instead of repairing it. How the healer's focus mattered as much as their chakra control.
Karura's hands glowed green on the third attempt. The cut on her fish began closing almost immediately, the edges knitting together, new cells forming along the wound line. By her fifth attempt the cut was nearly sealed. A thin scar remained where the flesh hadn't quite matched, but the bleeding had stopped and the tissue was healthy.
Chiyo watched with an expression that was hard to read. "Nearly perfect. On your first night."
Sayo's results came slower but they came. Her genjutsu training had given her the precise chakra control needed to convert her energy into the right frequency. By her eighth attempt, the edges of her fish's wound glowed green and began to close.
"Not bad," Chiyo said. "Your talent in genjutsu transfers well. With regular practice, you could become a competent medical-nin."
Torune struggled. His chakra control, strong enough for puppet threads, lacked the fine-grain precision that medical ninjutsu demanded. His first fish died from chakra overload. His second fish died from chakra rejection. His third fish survived but the wound didn't close. The green glow flickered at his palms but never stabilized enough to penetrate the tissue properly.
Chiyo watched him fail for another twenty minutes before she spoke.
"Torune." Her voice wasn't unkind. "Medical ninjutsu is not for you. The two disciplines require different kinds of talent. Trying to force this will waste time you could spend improving where you're already strong."
Torune set the fish down and he didn't argue. Lady Chiyo would know more about this than he would. Plus, he wasn't really interested in healing in the first place. He just decided to give it a try, because what if he was talented in it?
"Sayo and Karura are naturally suited for this," Chiyo continued. "They'll continue training with me when time allows. You should focus on your puppet work and your earth nature transformation. Build on what you have instead of chasing what you don't."
He nodded. It stung a bit but at least she was honest with him. Torune had always preferred honesty.
They packed up camp as dawn broke over the border. Another day of inspection ahead. Another night of training after that.
Karura crawled inside Protector's chest panel and activated the Transformation Jutsu on its exterior. The puppet became the girl. The girl became a protected shinobi.