Becoming Shimura Danzo

"Danzo-sama, Uzumaki Naruto has successfully graduated after stealing the Book of Seals and learning Multiple Shadow Clones Jutsu."

A tall ninja with an animal mask and tactical combat clothing is kneeling on one knee in front of an old man with black hair and bandages covering up one eye. The other eye is completely emotionless, on his chin is a cross-shaped scar, his arm is covered with white bandages and holding a cane. He is Shimura Danzo, an elder of Konoha, leader of the Roots, and one of the most ruthless people in the ninja world.

"I see, get out."

"Yes, Danzo-sama."

The root ninja disappeared and Danzo sighed. Throwing away the cane from his hand, he sat down on a chair and put his chin on his hand with a thoughtful expression.

'Danzo huh? It's not a bad body to transmigrate into, just a bit old, but there are enough possibilities to rejuvenate youth in the ninja world. Especially considering all *my* dealings with Orochimaru.'

He was originally just an ordinary young man on earth, but a few hours ago he inexplicably transmigrated into the body of Danzo Shimura. He also got all of Danzo's memories, but they didn't affect his temperament and character for some reason, as if he was just a bystander.

From Danzo's memories, he also knew the time period. It's the beginning of the plot from the original Naruto Anime.

Uzumaki Naruto and Sasuke Uchiha are now both twelve years old and have graduated from ninja school just yesterday. For Danzo, this means that there are only a few years left until this world becomes even more chaotic and dangerous than it is already.

Considering that Uchiha Sasuke and Uzumaki Nagato have both a strong feud with him, he doesn't feel safe at all. Curse the original Danzo for being such an asshole. He is responsible for the death of the clan and parents of a future Six-Paths level character and killed the best friend of someone who already has Rinnegan and the power to destroy Konoha in one move.

Scratching his head in irritation Danzo sighed deeply, he really doesn't know what he should do in this situation. He really wants to survive and become a strong ninja, living life to the fullest, but he has made too many enemies at his starting point.

The ninja world is a world dominated by blood and genes, basically, descendants of Kaguya have an overwhelming advantage in terms of potential. Although he has already thought of a few ways to strengthen himself, it's basically impossible to ever reach Six-Paths level heights.

['Personality exchange system' has been bound to the host.]

Danzo was startled and then ecstatic, now there is nothing to worry about. With a system, he can become as strong as he wants.

'System what are your functions?'

There was no answer.

'So the system has no intelligence? Well, I'm not sure if I should be happy or sad about that.'

He quickly checked the functions manually and after two minutes has a basic understanding of it.

It has only three functions, first, it can observe the most striking personality traits of people and a bit of other information.

Second, he can change the personality of others depending on their strength. If the opponent is much weaker than Danzo himself he can change it however he wants, the stronger the opponent gets the more restricted is the degree of change.

The third function is that he can randomly gain one ability or talent of the person he changes. It works only once per person though and there is the possibility of duplicate abilities. In the case of duplicates, the proficiency of the ability will go up dramatically.

Thinking of all the different ways he can use these functions Danzo was extremely excited and started laughing loudly. There is no one near him anyway and he let himself go.

Calming down after a while, Danzo stood up and called his subordinates, he wants to try the system immediately.

Looking at his subordinate he used [Observe] on him.

[Name: Nara Kishaki

Affiliation: Root

Strength: Jonin

Personality traits:

Ruthless (Has lost most emotions after inhumane Root training)

Loyal (Through brainwashing he has become incredibly loyal to Shimura Danzo)

Highly Intelligent (As a Nara, he is born with High Yin-affinity, making his brain and mental power more developed)]

'As expected of my subordinate, having lost most of his emotions he has very few personality traits. Sadly it's impossible to just add good traits to people, I can only change already existing traits for others.

Let's try. Hmm, let's change his ruthlessness into deeply caring.'

[Name: Nara Kishaki

Affiliation: Root

Strength: Jonin

Personality traits:

Deeply Caring (Is deeply empathetic to the feelings and lives of others and likes to help.)

Loyal (Through brainwashing he has become incredibly loyal to Shimura Danzo)

Highly Intelligent (As a Nara, he is born with High Yin-affinity, making his brain and mental power more developed)]

[Congratulations on getting Yin-element affinity]

'Yin-affinity? Jackpot, my spirit already feels a little refreshed and my thinking got smoother. Not bad at all.'

Looking at his subordinate, Danzo saw that the emotionless expression on his face had disappeared, replaced by a soft one. Danzo grinned, messing with the lives of others like this is really fun.

He can already imagine when he makes Orochimaru into a never-before-seen gentleman and Jiraiya becomes an Asexual person, disgusted with the idea of anything sexual.

Unable to stop himself from laughing, Danzo only managed to stop after a while. With an evil expression on his face, he gestured to his subordinates and walked in the direction of the Hokage building.

'Hiruzen I can't change you much for a while, you are a bit too strong but the other elders and Jonins from Konoha are good targets.

Of course, Naruto, Sasuke, and the others should also be on my list.

This will be fun.'