"You're treating me like an idiot!" Uchiha Dan was so angry that he laughed. "Would I dare to use it after signing the contract? If I don't dare to use it, what's the point of learning it?"
"Also, if I remember correctly, Shikkotsu Forest's Sage Art is known as the most difficult Sage Art to learn, isn't it?" Uchiha Dan continued.
"Throughout recorded history, the only one who learned Shikkotsu Forest's Sage Art was your grandfather, Senju Hashirama. Even your great-uncle didn't learn it. Do you think I have that talent?"
"So, stop saying things like that!" Uchiha Dan said. "While I'm very interested in secretly researching the Slug to improve my Medical Ninjutsu, that alone is definitely not enough."
"You should know that I not only created the Rebirth Technique you saw last time, but there are also several others that I couldn't demonstrate due to Chakra limitations. The conditions you're offering are too poor."
"Several others?" Tsunade's breathing quickened.
And that Ninjutsu was called the Rebirth Technique? Did it imply the ability to bring the dead back to life?
Before Tsunade could offer more conditions, the office door was pushed open, and a nurse walked in, saying, "Dr. Dan, a patient has come to see you and specifically asked for you to treat him."
"Understood!"
With that, Uchiha Dan grabbed his medical kit and left like a flash, leaving Tsunade looking depressed.
Days passed one by one.
Uchiha Dan guided Minato Namikaze's training in the evenings, while also verifying his ideas on Ninjutsu.
During the day, he went to work as usual.
The only difference was that Tsunade was now in the office.
As time went on, Uchiha Dan gradually stopped rejecting Tsunade.
On the surface, it wasn't because he accepted Tsunade, but rather as if he had resigned himself to fate, which greatly annoyed Tsunade.
However, during their time as colleagues, the two of them frequently discussed medical techniques and Medical Ninjutsu, and each time they discussed, they became completely engrossed.
As the pinnacle of Medical Ninja, if Uchiha Dan hadn't been there, Tsunade truly wouldn't have had anyone to discuss with.
No one could keep up with her pace or offer her constructive advice.
Because she was the best.
Now that she had someone to discuss with, everything was different.
Tsunade's occasional insights made Uchiha Dan's eyes light up.
And the insights and solutions Uchiha Dan proposed made Tsunade utterly fascinated.
For this, Tsunade lamented more than once, how could this man be so excellent yet so annoying?
As more patients were treated, Tsunade's reputation slowly grew.
The saying of Konoha's twin medical geniuses gained increasing recognition.
When they encountered interesting cases, the two of them would also research and treat them together.
Three months passed like this, and Uchiha Dan received a notice to go to the Pharmaceutical Department to develop new antidotes.
Uchiha Dan keenly sensed that his opportunity had arrived.
To accelerate his path to freedom, he decided to take a risky move.
Seven years. He was tired, truly not wanting to drag it out any longer, after all, how many seven-year years does one have in life?
In a secret room in the Pharmaceutical Department, this place had become Uchiha Dan's exclusive laboratory.
However, Utatane Koharu, being uneasy, would specifically send people to watch Uchiha Dan.
Uchiha Dan had long been accustomed to this scene; not having freedom anywhere was his normal state of life.
Other aspects didn't matter, but the crucial point was that he didn't even have a chance to test the Flying Thunder God Technique.
As one of the Five Great Ninja Villages, Konoha's strength was naturally not to be underestimated. For Uchiha Dan to successfully escape Konoha, the Flying Thunder God Technique was essential.
Learning the Flying Thunder God Technique was despairing for others.
But the Flying Thunder God Technique was invented by the evil Senju Tobirama, and Uchiha Dan possessed all of Senju Tobirama's talents.
So he had never doubted that he could learn the Flying Thunder God Technique.
Over these seven years, Uchiha Dan had long figured out the principles of the Flying Thunder God Technique, but he didn't dare to practice it.
He was afraid of being ruthlessly eliminated before he even learned it.
However, the Flying Thunder God Technique was not a Ninjutsu that could be used just by understanding its principles; it required extensive practice.
Without mastering the Flying Thunder God, Uchiha Dan felt that there was no place for him in the vast Ninja World.
Sigh!
After sighing, Uchiha Dan began to take out various medicinal materials and started the preliminary processing and extraction of each one.
About ten minutes later, that old hag Utatane Koharu herself arrived.
"Get out!" After ordering the security personnel to leave, only Uchiha Dan and Utatane Koharu remained in the entire laboratory.
"Evil Uchiha brat!" Utatane Koharu instantly adopted a condescending and cold demeanour upon seeing Uchiha Dan. "You must formulate the antidote and write down the formula before noon today, or you will surely die."
Upon hearing Utatane Koharu's words, Uchiha Dan immediately became enraged.
This scene had happened many times.
Moreover, that coward Utatane Koharu, if there was any third party present, would never constantly say "evil Uchiha brat," not at all like Senju Tobirama, who was straightforward.
Only when no one else was around would this old hag instantly run her mouth, making Uchiha Dan want to kill her more than once.
I can't beat Sakumo Hatake who is monitoring me, but I can't beat you either.
Among Senju Tobirama's many disciples, Utatane Koharu was the only female disciple.
In her youth, her appearance was quite good, and with Senju Tobirama still alive at the time, Utatane Koharu appeared very docile, making her the undisputed darling.
Furthermore, she was also a Medical Ninja, and her strength among Medical Ninjas was outstanding, reaching the level of an Elite Jonin.
It was a widely acknowledged fact in the Ninja World that the combat power of Medical Ninja was generally weak; Tsunade was an exception.
So, for Utatane Koharu to reach the strength of an Elite Jonin as a Medical Ninja was already very impressive.
However, since Senju Tobirama's death, for seven whole years, as this old hag aged and went without training for a long time, her strength regressed significantly.
During these seven years, what no one knew was that Uchiha Dan had already awakened his Three-Tomoe Sharingan.
With his current strength, it was truly quite easy to kill this old hag.
One Genjutsu, and she would be instantly defeated.
But killing Utatane Koharu would only provide temporary satisfaction.
Not only would there be no practical benefits, but it would also cost Uchiha Dan his own life.
Such a life-for-a-life exchange was not impossible.
But to exchange his life for Utatane Koharu's?
Just thinking about it felt like a huge loss!
However, Uchiha Dan knew the reason for Utatane Koharu's particularly bad attitude towards him, and it actually had little to do with Senju Tobirama.
As a fellow Medical Ninja, Uchiha Dan's talent surpassed this old hag's by a mile.
Especially over time, it made Utatane Koharu feel like a complete and utter waste.
Utatane Koharu, who was already narrow-minded and had been a pampered prodigy since childhood, was disfigured by her jealousy towards Uchiha Dan.
If Uchiha Dan hadn't genuinely helped her earn money, she would have wanted to kill him long ago.
There was another reason for her targeting Uchiha Dan, and this reason was related to Uchiha Kagami.
Actually, this old hag Utatane Koharu didn't have a strong prejudice against the Uchiha Clan before.
So, during joint missions and the First Shinobi World War, Utatane Koharu was somewhat infatuated with Uchiha Kagami, a strong, warm, and handsome Uchiha Clan member who had saved her many times.
However, Uchiha Kagami always maintained a distance from Utatane Koharu.
Later, without informing Utatane Koharu in advance, he fell in love, got married, and now his child was old enough to buy soy sauce.
For this, Utatane Koharu almost went mad.
Hiruzen Sarutobi pursued me, and I rejected him.
Homura Mitokado pursued me, and I rejected him.
Danzo Shimura, although he didn't pursue me, once showed some interest.
How dare you, Uchiha Kagami, treat me like this?
So the old hag consequently hated the entire Uchiha Clan and took all her anger out on the completely unrelated Uchiha Dan.
Even though Uchiha Kagami had died seven years ago, this hatred in Utatane Koharu's heart had not disappeared.