"You have got some talent for chakra control kid… too bad your chakra isn't suitable for medical ninjutsu. Or else I might consider taking you as my disciple." Tsunade shakes her head.

Peng… Peng…

She taps a few tenketsu points on Yuji's hands and disperses the gathered chakra in his hands.

'As expected of a genius medic-nin, she has a deep knowledge of the body to easily disperse the infused chakra in my hand. Perhaps my inability to learn the medical ninjutsu is also due to my strange chakra.'

"It's fine. I don't really have any interest in the medical profession." Yuji shrugs his shoulders.

"Hoh, kid… are you looking down on us medics? Just so you know, the profession of a medic is filled with peril and hardships. The highest rank of a medic, the combat medic, has to assist in battle while ensuring the safety and health of his teammates. A medic plays a more crucial role than a military personal and thus is ranked higher than the former." Tsunade pridefully boasts the importance of a medic to Yuji.

'I can't deny the importance of a medic on the battlefield. However, as an assassin who worked solo, seeking medical help was the least of my concern. Every mission was a life-and-death situation, since getting caught meant death. However, I can't deny the credit to the doctors who patched me up after every mission.'

"No… it's just that I don't think I am suitable for the medical profession." Yuji shakes his head.

"Hmm… given your record of violent tendencies, it sure isn't suitable for you." Tsunade chuckles.

'Umm… both times it was an unintentional act of mine. The first time was due to my sudden awakening and as for the second time, I didn't expect to cause so much damage.' Yuji silently retorts.

"Also, about your new technique… I would like you to avoid using it against your comrades. Your technique not only enhances the strength of your punches, but also inflicts a lethal stream of chakra in your opponent's body. This stream of chakra, if left unchecked, might corrode the internal organs of the victim like a slow poison. Though any shinobi with a decent amount of chakra control and some knowledge of their body can eject it out of their body. Nonetheless, I would suggest, avoid using it against the shinobis from the same village." Tsunade explains it to him.

"I will keep that in mind." Yuji nods in affirmation.

'So, that dark black chakra is really mysterious. Other than its dense nature and corrosive ability, I wonder what other properties it has. Looks like I have to spend a lot of time researching its effects.'

Tsunade and Yuji enter the central building.

"The Hokage Office is on the first floor," Tsunade explains.

"First floor?"

"Mm… The Hokage office is a two-story building. The ground floor has the administration department, the commission department responsible for issuing shinobi missions, a library, and a large hall for official meetings. The first floor has the official Hokage Office. There are also some other rooms besides the Hokage office, but their importance is irrelevant to you." Tsunade reveals a simple outline of the Hokage office to Yuji.

'Hmm… I am sure that's not all. There must be some underground structure and some sort of escape route hidden somewhere since every official building has such sort of setting. However, for now, none of this is my concern.' Yuji curiously looks around.

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Both of them climb the stairs and reach in front of the Hokage Office.

Knock… Knock…

Tsunade gently taps on the door.

"Come in!" A few seconds later, a slightly hoarse voice enter their ears.

Creak…

Tsunade twists the doorknob and enters the room. Yuji follows her.

"You are here!"

A middle-aged man with tan skin and dark brown, spiky hair is sitting on a chair. A desk full of paperwork is laid in front of him. Hiruzen stares at Yuji. Yuji also inspects the Hokage's appearance.

'This is probably my fourth meeting with him.' He recalls the previous three meetings with the Hokage.

'The first meeting was in the hospital. Back then, he exuded the authority of a person in a higher position. Our second meeting was during the academy, at that time he exuded the aura of a leader who addresses his subordinates. The third meeting was a much more formal one…'

Yuji recalls the fishing incident.

'… he was like a friendly neighborhood uncle in Minato's words. And now…'

Wham…

Suddenly, Yuji feels a large amount of pressure pressing down on his body.

Keuk…

Yuji's legs give up and he falls to his knees as the pressure bears down on him. Hiruzen glares at him with narrowed eyes.

Humph…

"Aren't you a bit too harsh?" Tsunade snorts. She gently taps Yuji's shoulder and the overwhelming pressure encompassing him vanishes.

'He is testing me, or is he still pissed at me for the previous food poisoning incident?' Yuji relates it to Hiruzen's petty nature.

"Umm… I…"

"Why are you so harsh on a child?" She persists.

Ahem…

Hiruzen clears his throat. He withdraws his chakra and regains his composure.

"Only someone with a strong will and endurance can inherit the will of fire." He turns his attention to Yuji.

"And this boy holds such qualities… though his personality to seek trouble might need a bit of work." Hiruzen expresses his high hopes for Yuji.

"Oh… you also feel the same, sensei!" The frown on Tsunade's face disappears.

"Sensei?" Yuji stares at Tsunade and Hiruzen in confusion.

"Oh… looks like I forgot to mention but I am a student of the Lord Hokage," Tsunade reveals her relation with Hiruzen.

"So, does that mean Tsunade Nee-san has a relationship with all the Hokages?" Yuji is slightly surprised to hear it.

"Hmm… if you put it that way, then it is indeed true. The first Hokage Lord Hashirama Senju is my grandfather, the second Hokage Lord Tobirama Senju is my granduncle, and the current Hokage Lord Hiruzen is my Sensei. He was also a student of the First and the Second Hokage." Tsunade continues her explanation.

Both Tsunade and Yuji ignore Hiruzen's presence.

Ahem…

"Looks like you are forgetting something." He raises his voice by a few pitches.

"Ah… I am sorry, sensei." Tsunade apologizes.

Hiruzen's expression turns serious.

"I saw the turn of events unfolding with my eyes. The fault lies with those academy students and their genin brother. However, this doesn't clear you of your fault. From my observation, you could very easily subdue the genin with your skill and yet you took such drastic action. I would like an explanation of the matter and, depending on your statement, I might lower your punishment."

"I will explain everything." Yuji recites the words he prepared earlier with Tsunade.

After a few minutes.

"Hmm… so you mean to say that you didn't have a measure of your strength and all of this was caused by a sudden improvement in your technique, which led you to underestimate the power of your attack?" Hiruzen raises an eyebrow.

"Is what he is saying right, Tsunade?" Hiruzen turns to Tsunade.

"I can vouch for that, since I was the one who mentored him." Tsunade nods in affirmation.

"Very well… I am also curious about the technique you used at that time. I would like to see a demonstration of that technique." Hiruzen stands up from his seat.

He signals to a nearby anbu.

Whoosh…

A figure in black clothes and an animal mask suddenly appear beside Hiruzen. Hiruzen whispers a few words to anbu and the latter disappears similar to how he appeared.

'Hmm…' Yuji narrows his eyes.

'This person exudes a similar aura to that person I met earlier. Perhaps this is a version of this world's secret protective force. A secret force that only takes orders from the leader of the village.'

Izuna speculates the identity of Gojo and the masked figure.

A few minutes later,

Hiruzen, Tsunade, Yuji, and a few anbus assemble in a secluded training ground in the Hokage building.

There are two wooden dummies in the center of the training grounds. One of the anbus walks towards Izuna and explains the details.

"So, you want me to use my normal chakra-enhanced punch on one of the reinforced dummies and the empowered chakra-enhanced punch that I used against that genin on the other?"

The anbu nods.

"Yes, I am also quite curious about the increases in strength of your improved technique." Tsunade also curiously glances at him.