At this moment, Rengoku was still biting onto Karin's hand, rapidly absorbing her life energy.
He had revived three people, and on Karin's side, aside from her complexion looking a bit pale, there weren't any other problems.
Rengoku released his mouth, pointed at the bottle of Water of Life in Karin's hand, and said softly, "Drink it first. Replenish the life force you've lost."
Hearing this, a sly glint suddenly flashed in Karin's eyes, as if she was scheming something.
She lightly shook the bottle in her hand while vaguely explaining, "Um… well, if I drink it now, I'll get sleepy. It's not too late to drink it after everything here is finished."
Rengoku carefully looked over Karin's condition. Seeing that she was indeed still stable, he didn't insist any further.
After that, he turned and walked over to Gaara, gently patting his shoulder as he comforted him, "Your mother just woke up. Her mind might still be a bit muddled. Stay with her and talk for a while."
Gaara nodded firmly, wiping the tears at the corners of his eyes with his sleeve, choking as he said, "Thank you, Lord Rengoku. I understand."
After saying that, he took a deep breath, trying hard to steady his emotions, then slowly walked up to Karura and reached out both hands to tightly hold his mother's slightly cold palms.
In this world, there were two people who treated him the best. One was his mother, who protected him even after death, and the other was Rengoku.
Gaara stared fixedly at Rengoku's back for a moment.
He would give everything for Lord Rengoku.
Rengoku was leading Orochimaru toward a room at the side.
Inside, Tsunade and Nawaki were standing. When Tsunade saw Rengoku, she teased, "Looks like Gaara and Sasori have both sold their lives to you."
Facing Tsunade's teasing, Rengoku just smiled slightly and didn't respond much.
However, Tsunade clearly didn't intend to stop there, and immediately added, "This is the first time I've seen an Uchiha as busy as you."
It had to be said, Tsunade wasn't wrong.
Under normal circumstances, members of the Uchiha clan usually had nothing but a desire for battle in their minds.
They carried out all kinds of missions simply to seek more intense fights.
And most Uchiha had hot tempers and acted impulsively, the type that lacked a bit of sense.
Don't be fooled by Fugaku's current calm and self-restraint. That was because his eyes were going blind.
When he was young, Fugaku was also an elite Uchiha who dominated the battlefield.
The title "Wicked Eye Fugaku" wasn't just talk, it was earned during the great ninja war.
Rengoku, on the other hand, usually had little interest in fighting. He just liked saving people, then bringing all those he saved back into the Uchiha clan.
Hearing Tsunade's words, Rengoku just shrugged, "These kids are all geniuses."
"Take Gaara for example. He's much more useful than that One-Tail Shukaku. It's a shame Rasa is such an idiot."
"An idiot?"
Tsunade froze for a moment when she heard that.
But soon, as if she realized something, she burst out into hearty laughter.
After all, it was the first time in her life she had heard such a novel and vivid way of insulting someone.
She had to admit, calling Rasa an "idiot" really was perfectly fitting.
Karin stood on her tiptoes at the side, signaling to Rengoku, "Shishou, I'm useful too!"
Rengoku turned his head with a smile, reaching out to gently stroke Karin's smooth hair as he said softly, "Alright, of course you're the most useful."
"See, I can't save people without your help."
Finally getting the praise she had been hoping for from her master Rengoku, Karin laughed happily.
In truth, for Karin, the exact content of the praise didn't matter. As long as she could feel Rengoku's attention and care toward her, that alone was enough to make her completely satisfied.
Seeing that Rengoku still doted on Karin so much, Tsunade found their relationship a bit interesting.
As a veteran medical ninja, Tsunade could easily understand why Karin had developed such feelings toward Rengoku.
What surprised her more was that Rengoku had accepted those feelings so quickly.
It had to be said that although Rengoku differed from most Uchiha in some ways, that innate wildness and free-spirited nature in him was exactly the same.
For the Uchiha clan, they often acted freely, without restraint, sometimes even recklessly.
And at this moment, Rengoku was clearly displaying that trait to the fullest.
Orochimaru, standing at the side, paid no attention to this at all. He was fully focused on preparing and checking the reagents needed for Nawaki and Tsunade.
With skilled hands, he operated various experimental instruments, carefully verifying the composition and dosage of each medicine to ensure there were no mistakes.
At this time, Nawaki finally realized that the relationship between Rengoku and Karin had already become somewhat ambiguous.
But Nawaki held a bit of awe toward Rengoku and didn't dare joke with him like his sister did.
Although Nawaki was Tsunade's younger brother, in terms of status and strength, Tsunade and Rengoku were of the same generation, while Nawaki belonged to the younger generation.
At this moment, Orochimaru had already finished preparing all the injections.
He raised his head to look at everyone and gestured with his hand:
"Let's begin now. Sit over here first."
As he spoke, he pointed at several neatly arranged stools beside him.
Tsunade walked over and sat down in a bold, unrestrained manner, looking very imposing.
Nawaki, on the other hand, was very well-behaved, sitting properly. After all, everyone here was either his sister, his teacher, or the Fifth Hokage, he didn't dare act out of line.
"What's the procedure?", Tsunade asked with some confusion when she saw Orochimaru approaching with the injection.
Normally, before conducting an experiment, there would be a detailed procedure.
That way, if any problems arose, they could respond quickly and deal with them.
Orochimaru didn't immediately answer Tsunade's question. Instead, he lightly flicked the syringe in his hand, expelling all the air inside.
Only then did he speak unhurriedly, "There is no specific procedure this time. Just inject this 'Hashirama No.1' directly into your bodies, and then observe your respective reactions."
At this point, Orochimaru paused for a moment, then added, "If the reaction is bad, I'll kill you and have Rengoku revive you again."
Although Orochimaru said this casually, as if it were nothing more than a trivial matter, the meaning behind his words was extremely terrifying.
Hearing this, Tsunade couldn't help but show a look of shock.
She never expected that Orochimaru, who used to always be meticulous and fully prepared in everything he did, would now become so simple and crude, completely disregarding the life and safety of his test subjects.
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