Naruto: Sasuke and Naruto Hot Heaven

"What is it?" His secretary responded from the Special Jonin Ward, located at the end of the corridor, and his voice echoed in the corridor.

"come here."

"I'm busy, Ryouta, not as laid back as some people."

"Stop talking nonsense. I need your professional opinion."

Shiki sighed in frustration and Ryouta could hear her coming down the hallway before she emerged from her room, slapping her hip in dissatisfaction with the clipboard in her hand.

"Why don't you go find another surgeon? Why do you have to find me?"

"I need a perception ninja's opinion."

Shiki blinked, eyeing him suspiciously over his glasses as if some librarian had caught him trying to smuggle an ancient ninjutsu scroll into his bag, and Ryouta vividly recalled their first meeting.

"Why exactly?" Shiki muttered.

Ryouta rolled his eyes.

"Could you come over here and take a look, just for a moment?"

Shiki glared at him angrily and stamped her feet anxiously, but finally gave in and walked towards him. As she approached, Ryouta threw the crystal to her.

"What do you think of this?"

Shiki looked at the bright blue crystal as she walked, pushing her glasses up on top of her head and walking into Ryouta's office, turning around.

"Highly concentrated," was the first word she uttered, twirling the crystal between her slender fingers. "More than three times more concentrated than normal chakra. High energy concentration, starburst emission pattern, high Yang concentration, Yin-Yang ratio of 2:1." She looked up and saw Naruto and Sasuke sitting on the floor, and raised an eyebrow.

"I assume this is yours?" she asked Naruto.

Naruto nodded. "What's wrong with it?"

Shiki turned to Ryouta.

"Are you teaching him medical ninjutsu?"

"It's mainly bone repair." Ryota said affirmatively.

"You did great, kid," Shiki said to little Naruto. "You were having trouble because you were trying to stuff a waterfall into a faucet."

"Um...what?"

Shiki leaned against the wall, holding the chakra-filled crystal up to the light.

"Most medical ninjutsu require you to condense the chakra into a tiny point before using it. In your case, you're trying to compress something that's already very thick into a smaller form."

"What if he skips the coagulation step? Will it work?" This question came from Sasuke, who had been very quiet until then.

"In theory, it should work," Shiki agreed. "But you'll probably still need to control the density with some minor adjustments to get the consistency you want."

"Oh, that's easy." Naruto said loudly. He had already started to make rapid gestures with his fingers, preparing to try again. "I often adjust the consistency of chakra in sealing techniques."

Shiki grinned.

"Then you should be fine."

He turned to Ryouta.

"Can I go back to work now?"

"When did you need my permission?" Ryota asked back.

Shiki just rolled his eyes and turned to leave.

"Thank you, Shiki," Ryouta whispered from behind her.

"You're welcome."

******

"I have no idea." Iruka muttered. "That's why he has such a hard time with illusions - his chakra is too strong." He stopped in the middle of the corridor, facing Ryouta, tilted his head and asked, "Why are you telling me now?"

The surgeon shrugged.

"Because you are now his secondary guardian, legally speaking, so you should know. And it's also a health matter in case he needs a blood transfusion, although that's unlikely considering the Kyuubi's existence. There's one more thing you should know - both you and Kakashi should know."

"Anything else?" Iruka couldn't help but ask - Naruto has always been his family, he and Sasuke have been through enough...

“It’s not necessarily a problem, but maybe something to watch out for in the future.”

"What is it?" Iruka demanded, not liking the way Ryouta's body language changed from casual to serious.

"Well, after Naruto's chakra problem, I ordered all three brats to be tested for chakra composition. Both Naruto and Sasuke's chakras have some... disturbing similarities."

"What kind of similarities?"

Ryouta hummed and rubbed his fingers together, as if trying to form words.

"There are some markings...that correspond to each other. Naruto's yin-yang chakra ratio is 2:1. Sasuke's is 1:2. Naruto's chakra is high density and low release; Sasuke's is low density and high release. Sasuke's chakra flows clockwise, Naruto's is counterclockwise. It's all little details like that."

Iruka blinked.

"What's the problem with that? It's probably because they've been training in such close range for a long time, isn't it?"

Ryouta shook his head.

"If it were just one or two isolated features, it might be a coincidence, but there are too many such features." Ryouta paused, looked directly into Iruka's eyes, and said firmly: "I know it's just a guess, but I think those could be twin flames."

Iruka blinked, then laughed disapprovingly.

"Twin flames? You mean like soul mates? That's just a myth."

"Minato Namikaze and Kushina Uzumaki are twin flames," Ryouta said in a serious tone, with no smile in his eyes, nor any sign of joking.

Iruka's laughter stopped abruptly.

"You're kidding me."

Ryouta shook his head.

"It's not widely known, but those close to them know about it. Kakashi knows about it, and the Hokage knows about it."

“But a fully awakened twin flame will…”

"That's right." Ryouta continued softly. "The two of them can be an army. An unstoppable army."

Iruka suddenly remembered the report of the Third Ninja World War, where a pair of male and female ninjas frightened the entire army of experienced ninjas.

"That... does make sense."

"Well, we can't be sure yet." Ryouta reminded him. "I just want you to know that it's very likely to happen. We can only know for sure when they're a little older."

"I'll keep an eye on it," Iruka promised.

Ryouta smiled reluctantly.

"That `s a deal."