The Evil Senju Clan!
Damn Senju Tobirama!
Inside an office at Konoha Hospital, Uchiha Dan gritted his teeth and cursed Tobirama in his heart.
Whenever he thought of his current predicament, he couldn't suppress his hatred for Tobirama Senju.
He wanted nothing more than to dig up Tobirama's grave, grind his bones to dust, and scatter the ashes.
Seven years ago, he'd inexplicably crossed over into the Naruto world, merging with the soul and memories of a ten-year-old boy from the Uchiha Clan. He had become Uchiha Dan.
That same day, newly reborn, Dan had happily strolled down the streets of Konoha and seen Tobirama Senju for the first time.
The moment he saw Tobirama, a notification suddenly rang out in Dan's mind.
[ Ding! System activated. Host has acquired all of Tobirama Senju's talents (upgradeable)! ]
The sudden notification startled Dan, and then a surge of joy washed over him.
But when Dan looked up, unable to contain his excitement, he found himself staring straight into Tobirama's wary, scrutinizing gaze.
The icy look in Tobirama's eyes, as if he were examining a monster, made Dan feel as though he'd fallen into an ice cavern.
What the hell are you looking at me like that for?
Are you going to kill me or something?
Just because you looked at me once in a crowd?
Can't you be reasonable?
Fortunately, Tobirama was in a hurry to reach Kumogakure for armistice talks with the Second Raikage.
So he merely shot Dan a cold, warning look before swiftly leaving Konoha, surrounded by his students and guards.
Seeing Tobirama leave, Dan let out a huge sigh of relief.
He had a good idea why Tobirama had looked at him so strangely.
Tobirama had always been wary of the Uchiha Clan.
Dan's sudden, frenzied excitement had reminded Tobirama of something familiar: the look in his own eyes when he was conducting research.
To Tobirama, that look was an unmistakable sign of extreme danger.
This kid must not be allowed to live!
Tobirama was a ruthless man. He wouldn't take pity on Dan just because he was only ten years old.
So, in his heart, Dan shouted at Tobirama, "Yashiyare! (Go to hell!)"
He knew that when Tobirama went to Kumogakure to negotiate an alliance, he would be ambushed and gravely wounded by Kinkaku and Ginkaku, who had launched a rebellion.
In the end, he would draw the enemy away to protect his students—and die in the process.
The thought lifted Dan's spirits considerably.
That'll teach you to glare at me. Anyone who glares at me dies!
Sure enough, not long afterward, news of Tobirama's death spread through Konoha.
The whole village sank into grief, but Dan let out another huge sigh of relief.
Just when he thought he could finally relax, his miserable days began.
As soon as Hiruzen Sarutobi, newly appointed to the Hokage Position, returned to Konoha, Dan found himself under surveillance.
Not only was he being watched, but he was inexplicably expelled from the Ninja Academy, losing his chance to become a Genin upon graduation.
He was also ordered never to train in any way again, never to learn any ninjutsu, and to live under surveillance as an ordinary civilian.
What the hell? Were they afraid I'd get stronger, and also afraid I'd run away?
So they were going to cripple me completely?
He'd finally made it to the Naruto world. Who wouldn't want to become powerful and have Tsunade at his side, with Mei on the other?
But he'd barely gotten started before his dreams were cut short.
Just because Tobirama had looked at him once in a crowd, his whole life was ruined.
The title of most miserable transmigrator was rightfully his.
Worse still, Kagami Uchiha, an elder of the Uchiha Clan, used Dan's alleged violation of clan rules as an excuse to take an uncharacteristically hard line. He stubbornly drove Dan out of the Uchiha Clan.
For a long time afterward, even the slightest movement from Dan brought a squad of Anbu Ninja to take turns watching him. It was an astonishing display.
There was no need to guess. Tobirama must have given his students instructions before he died.
So, Tobirama, what did I ever do to you?
Why couldn't you leave me alone, even after you were dead?
It was just one look! Was that really necessary?
As much as he hated Tobirama, Dan couldn't help feeling utterly powerless.
His biological parents had died when he was very young, during the long and brutal First Shinobi World War.
So Dan hadn't received a proper education from the Uchiha Clan. Everything he knew, he had learned at the Ninja Academy.
He hadn't shown much talent, and at ten years old, he was only a little stronger than a novice who had just become a Genin.
In that situation, Dan had no one to turn to and nowhere to go.
So what if he had all of Tobirama Senju's upgradeable talents?
Did he dare conduct research? Did he dare train?
With so many eyes watching him, it was easy to imagine what would happen if he so much as did anything suspicious.
In the years after becoming Hokage, Hiruzen Sarutobi had been ruthless and decisive.
So for the past seven years, Dan had done nothing but think and theorize, day and night.
He pondered how various ninjutsu worked, whether they could be improved, and whether it was possible to create ninjutsu for certain specialized purposes.
But so far, he hadn't been able to put any of his ideas into practice.
Fortunately, the family that had taken him in was very kind and had cared for him well. After seven years together, they practically treated him as their own son.
Especially after Dan, unwilling to give up, displayed an astonishing talent for medicine, his adoptive father, Namikaze Toneri, took it upon himself to pull some strings and get Dan an apprenticeship at Konoha Hospital.
Perhaps Hiruzen thought that a doctor, even a Medical Ninja, posed no threat. He didn't interfere, which amounted to tacit approval.
That was how Dan became a medical... no, wait.
Just a doctor. He had no ninja rank and couldn't become a Medical Ninja, even though he had already mastered quite a few medical ninjutsu.
"Doctor Dan, there's an injured person who needs surgery!"
As Dan cursed Tobirama in his heart, a nurse ran into his office and spoke urgently.
"Is the patient a ninja or an ordinary person?" Dan asked routinely.
Everyone at the hospital knew that Dan used different treatments for ninja and ordinary patients, so the question didn't seem out of place.
"A ninja!" the nurse replied quickly, not suspecting a thing.
"I'll be right there. Get the operating room ready!" Dan said as he organized his medical kit.
Inside the operating room.
Dan quickly stitched up and bandaged the patient's gruesome arm wound.
"How are you feeling?" Dan asked the injured man with concern.
"Doctor Dan, I'm feeling much better." The ninja, relieved to have kept his arm, answered.
"Next, I'm going to give you some treatment to help you recover."
Dan nodded. He took a silver needle from his medical kit and continued seriously.
"Try performing the ninjutsu you're best at. You don't need to actually use it—just simulate the flow of Chakra through your body as you perform it. Remember, the slower, the better."
"Uh... Doctor, why?" the injured ninja asked, confused.
"Don't you want to get better faster?" Dan asked with a frown, feigning displeasure.
"I understand!" The ninja didn't hesitate. "I'll do it right away!"
With that, the injured ninja raised his badly wounded arm and began slowly forming Hand Seals with both it and his uninjured hand.
Dan placed his hand on the injured ninja's abdomen and carefully sensed what was happening.
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