{Konoha Hospital, Konohagakure}
{3rd Person POV}
{4:21 PM, 24th July 13 Yrs ANB}
Tsunade stared at Ren's clone trying to figure him out. She had asked her students but no one admitted that they had taught someone who was currently serving in the ANBU. Normally the identities of ANBU are secrets but her students would not lie to her.
Even if the Senju clan had seemingly disappeared from the world, the influence she wielded was enough that she could disregard these rules in Konoha. Still, the mystery remained, someone who has such sharp insight into the use of Mystical Palm Jutsu was an asset, and according to sensei, Fox's clone would accompany her platoon to the Land of River.
She hates war, and even though she recently overcame her fear of blood in the fight against Orochimaru she was not looking forward to the upcoming war. She had been dreading the day and the puzzle of Fox's identity had kept her mind busy.
"Who are you?" Tsunade asked, she wasn't one to mind games like her ex-teammates.
"Uhh..." Ren started, he was using the voice modulator again out of habit and Tsunade's face twitched in annoyance.
"Fine, come with me," Tsunade instructed before she made her way toward the door. They were in her office and a few moments later, Tsunade and Ren arrived at the reception. Her eyes scanned the room looking through the people waiting in line to get treatment. Her eyes zeroed in on a shinobi that was clutching a bandaged shoulder and she walked toward him.
"What's your name?" Tsunade asked, her tone was neutral but Ren could see that the shinobi was under pressure.
[Daigo Fumio Lv 45]
"U-umm, My name is Daigo Fumio, Tsuande-sama," Daigo spoke and Tsunade stopped him before he could bow.
"Follow," She instructed before she claimed a private room and closed the door after Ren came into the room.
"T-thank you, Tsunade-sama," Daigo spoke, he had a nervous and relieved expression on his face.
"Not that quick," Tsunade waved him away as she turned to Ren and flicked her head toward Daigo.
'She's not going to let this go is she?' Ren thought as he sighed, he nodded as he walked over to Daigo and flicked through a series of hand seals.
Tiger → Horse → Rabbit → Rat → Dog
'Chakra Scalpel Jutsu'
A blue coating of chakra appeared over his hand and he carefully cut through the bandages, the wound looked like it was made from a kunai.
Ox → Tiger
'Mystical Palm Jutsu'
A brief scan of Daigo's shoulder revealed that none of his tenketsu had been impacted by the injury, a couple of chakra veins were damaged but nothing that should take much time. He carefully manipulated a combination of Yin and Yang chakra and started healing.
Daigo's painful and apprehensive expression relaxed as the stabbing pain in his arm soothed. In just under a minute the pain vanished leaving just sore and fatigued muscles.
"Don't try to use any jutsu for at least a week," Ren spoke and Daigo nodded gratefully, he looked over toward Tsunade and she nodded at him and indicated for him to leave.
The door opened and closed leaving Ren alone with Tsunade. She was silent as she contemplated what she had just seen.
'His chakra was too stable, like he has done this for years, but from his voice yesterday I could tell he was young, very young.' Tsunade thought. She bit her lips as she stopped herself from repeating her earlier question.
"Who taught you medical ninjutsu?" Tsunade questioned.
"No one," Ren replied, seeing Tsuande begin to frown he explained, "During a mission I fought against a couple of missing nins, one of them had a scroll on anatomy and medical ninjutsu."
Tsunade's expression turned to disbelief for a moment as she exclaimed, "You expect me to believe that?"
Ren shrugged, this was the original story that he had given the head of the hospital before the chunin exams. After he was given a test to heal a stabbed fish and then some shallow injuries he was finally given permission to treat people.
"You used Yin release to recreate Daigo's chakra pathways, you couldn't have learned that from a scroll," Tsunade replied, her eyes were narrowed but she let that go. How Fox learned medical ninjutsu was suspicious to Tsunade, but what was more suspicious was his proficiency in using the Mystical Palm Jutsu.
After a moment and debating on what to do, she let go of her suspicions for now and instead asked, "Alright... Do you want to learn a new medical Ninjutsu?"
...
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{Apartment Building #13, Amegakure}
{3rd Person POV}
{5:11 PM, 24th July 13 Yrs ANB}
Ren was working on creating the new fuinjutsu seal that Hiruzen had given him. His knowledge regarding the actual sealing arts was a bit lacking as he hadn't focused on fuinjutsu as much as he did when he was in the academy.
Learning Kenjutsu and Taijutsu had taken priority and even now he could only practice this obscure art in secret. Unlike medical ninjutsu which he had taught himself, fuinjutsu was something that he was taught by someone from Konoha.
In his mind the distinction was still there so he didn't want to expose both the fuinjutsu and the shadow clone jutsu to Ame. The last couple of days had been a bit weird. Ren adjusted the new headband that he was wearing as he thought about it.
He was given the rank of Jonin by Konan and all the perks that came along with it. His probation was over, although she did tell him not to go on any missions for now. The only difference was that he had finally begun exploring Ame a little bit.
Amegakure was surprisingly as big as Konohagakure, though the majority of the population of Land of Rain lived here so it made some sense. There was an academy just like Konoha, and it even had a hospital which was surprising for a small village.
The infrastructure was a lot more advanced as a lot of tall buildings rose into the sky, one thing he had noticed though was that a lot of people were idle. The economy of the city was in shatters as the amount of work that Ame could generate just couldn't support their population.
'What even are Konan and the rest of the leaders doing? They are enforcing a sense of fake peace but at the same time, they are destroying the country. This forceful lockdown is killing Ame...'
Ren had a lot of opinions but he kept those thoughts to himself, his attention shifted as he finally got the notification today that he had been waiting for a couple of weeks.
With the official start of the war, and all the participants from different villages returning home, the chunin exams came to an end. There were many hidden objectives that Ren wasn't able to complete but he managed to finish the main objective.
...
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AN - Learning medical ninjutsu from Tsunade and then participating in the war next!