"Is it taken care of?" Tsunade asked lazily, still lying facedown.
"It was nothing." Uchiha Dan nodded unconcernedly. Then, as if remembering something, he asked, "How's your Revival Technique coming along?"
At the mention of the Revival Technique, Tsunade's face immediately fell.
"Hmph, how did you even come up with a technique like this?" Tsunade complained. "It's so difficult. I've been studying it for three months, and I've only just started to get a grasp of it."
The Revival Technique sounded like Medical Ninjutsu.
In truth, it was a neural technique Uchiha Dan had spent a great deal of time and effort researching to make future studies easier.
The technique controlled specially transformed Chakra, sending it into the body to travel through every nerve and thoroughly diagnose and repair the nervous system.
Once someone had trained this technique to a certain level, they could use countless Chakra Threads invisible to the naked eye to temporarily replace a person's neural network and transmit nerve signals.
Even if someone's head was cut off, as long as it wasn't far from the body, promptly using the neural technique could keep them from dying—at least temporarily.
They could even manage to control their body with their head detached.
If surgery was performed in time, the head could be reattached, and the person might not even suffer any lasting effects.
For the entire Shinobi World, this technique had era-defining strategic significance. It was a jutsu that could bring the dead back to life.
But learning the Revival Technique was no less difficult than learning the Flying Thunder God Technique.
To train in the Revival Technique, one first needed an extraordinary understanding of the human body. Every meridian and every nerve, along with how each one transmitted signals, had to be thoroughly understood.
For all its strictness, this was actually the easiest requirement to meet when learning the Revival Technique.
On top of that, one needed exceptional medical talent and the ability to supply a vast amount of vitality—in other words, to be one in ten thousand among Medical Ninjas.
Finally, one had to be able to precisely simulate neurons with Chakra.
That was the realm of the gods, far beyond what a human could accomplish.
Neurons couldn't be seen with the naked eye, and even the sharpest senses couldn't detect them. Without understanding neurons, there was no way to simulate them.
If not for the scientific advances of his previous life and the painstaking research of countless biologists, which had revealed the structure of neurons and how nerve signals were transmitted, even Uchiha Dan could only have stood by helplessly.
The fact that Tsunade had made some headway in just three months had already delighted Uchiha Dan.
"Don't get discouraged!" Uchiha Dan encouraged her. "It took me four years to develop this technique. You've already made great progress if you've got the beginnings of an understanding after three months."
"It took you four years?" Tsunade exclaimed in surprise. Uchiha Dan hadn't mentioned that when he taught her before.
"What did you expect?" Uchiha Dan laughed. "This is a jutsu that can bring the dead back to life!"
"So if you master it completely within four years, you'll already be learning it very quickly."
"And besides me, you're probably the only person in the entire Shinobi World who could learn it. Even if I wanted to teach anyone else, they wouldn't be able to learn it."
"Hmph!" Tsunade's confidence immediately returned. "I'll learn it in three years!"
"All right, all right. Three years, then!" Uchiha Dan couldn't help laughing at her.
After finishing the meal with Tsunade, he had her keep resting, then went on his usual rounds to check on the patients in the various wards.
Inside a private room for critically ill patients, seven or eight pairs of eyes immediately turned toward Uchiha Dan as he entered.
"Doctor Dan!" Everyone except Uchiha Rei, who was in bed, and Uchiha En, whose face was dark and sullen, got up to greet him.
"It's all right. I'm just making my rounds. You can stay seated." Uchiha Dan walked over to Uchiha Rei and carefully examined her complexion. He nodded and asked, "How are you feeling?"
"Dan, thank you!" Seeing Uchiha Dan's handsome, charming face again stirred up feelings she had kept suppressed for so long. Uchiha Rei's voice even sounded a little strange.
Her name was Uchiha Rei. She and Uchiha Dan had once been neighbors—childhood sweethearts, you could even say.
But later, Uchiha Dan was expelled from the Uchiha Clan, and she was ordered not to have any contact with him.
Uchiha Rei had always been a well-behaved girl who listened to her family. Though she was heartbroken, she chose to obey.
Over the years, she hadn't never seen Uchiha Dan, but those times had only been distant glimpses of him while she was on patrol for the Police Force.
Whenever she saw him, Uchiha Rei felt a pang of emotion, but she had never greeted him.
After she woke up this time, she heard that Uchiha Dan had saved her, and immediately remembered all the things they had shared.
Now that she was seeing him up close again, Uchiha Rei felt her heart racing.
"I'm a doctor. Saving lives is my duty," Uchiha Dan said matter-of-factly. "Give me your hand."
"Huh?" Uchiha Rei looked a little flustered.
Uchiha Dan was speechless. He repeated, "I said, give me your hand. I need to examine you."
"Oh!" Uchiha Rei obediently held out her right hand.
Uchiha Dan took her hand and checked her pulse, while controlling a thread of Chakra to travel through her body and examine how the wound was healing.
"Not bad." Uchiha Dan released Uchiha Rei's hand and nodded. "Over the next few days, I'll give you some treatment to help you recover. You'll be able to move to a regular ward in three days at most, and you can leave the hospital in ten."
"Oh, right!" Uchiha Dan suddenly asked, remembering something. "I heard you were injured during training?"
As soon as Uchiha Dan said this, everyone fell awkwardly silent.
That was right. Uchiha Rei hadn't been injured on a mission. She had been accidentally hurt by Uchiha En during training, and she had nearly lost her life because of it.
"Be more careful from now on." After that, Uchiha Dan nodded to everyone and turned to leave the ward.
But inside the room, one person's face had grown terribly dark.
That person was Uchiha En.
His personality might have been awful, but he wasn't stupid. How could he have missed the way Uchiha Rei had looked at Uchiha Dan just now?
What angered him most was that Uchiha Dan had nodded to everyone else, yet had ignored him from beginning to end, treating him like he wasn't even there.
Besides, you were a doctor. Just treat the patient. What did it matter to you how Uchiha Rei got hurt? Why bring up what everyone was trying not to talk about?
You were nothing but a useless nobody the clan had expelled. What was there to feel so proud of?
The anger already surging inside Uchiha En was impossible to suppress. He swore to make that useless Uchiha Dan understand exactly what happened to anyone who offended the Uchiha Clan.
Two hours later, Uchiha Dan left the hospital and headed home.
Someone had come to tell him that something had happened at his shop.
At the news, Uchiha Dan couldn't help sneering to himself.
He hadn't expected Uchiha En to strike back so quickly.
Ten minutes later, Uchiha Dan arrived outside the general store run by Namikaze Toneri and his wife.
"Stop! Police Force patrol. Bystanders, take another route!" Seeing Uchiha Dan arrive, Uchiha En shot him a vicious look, but spoke as though he were simply doing his job.
Before you continue