In the distance, Nawaki, who was enthusiastically learning to build houses under the guidance of Kushina and Minato, noticed that Uchiha Kai and Tsunade were talking happily, both smiling, and he couldn't help but fall into deep thought, rubbing his chin like a little adult.
Seeing Nawaki like this, Kushina and Minato also paused, curious, and looked over. They saw what Nawaki saw but didn't think much of it.
It was normal for them to be talking happily, after all, Uchiha Kai had just revived Nawaki and cured Tsunade's blood phobia.
Then Nawaki suddenly spoke up: "Hey, hey, Kushina, Minato, is my big sister still single?"
Both of them froze for a moment, their expressions slightly awkward, but they didn't think too much about it, since Nawaki was Tsunade's brother, and it was normal for him to care about her personal life.
Kushina nodded: "Hmm, Tsunade-nee has been single ever since Dan died. Although Jiraiya-sensei has always liked Tsunade-nee, well…"
She couldn't finish her sentence, showing a difficult-to-explain expression.
If Minato weren't here, she would have definitely complained about Jiraiya being an unreliable perverted toad who deserved to be single forever.
Minato understood his girlfriend's meaning and couldn't help but laugh awkwardly, feeling embarrassed.
Although Nawaki didn't quite understand what Kushina meant, when Jiraiya was mentioned, he scratched his head.
"Jiraiya-san… Well, how should I put this? At first, I thought he might become my brother-in-law. But… sigh…"
At the end, he sighed again, but then cheered up.
"If he's not suitable, then he's not. Sis is getting older, it's time for her to find a good man to marry. But, there's someone who, when she talks to them, both sides smile and the atmosphere is great. I've even met Kato-san before."
"And now… Well, I think Kai-nii is really nice. He's a good person, he can help Sis with her blood phobia, and they get along well. I really think he's perfect for her. Do you guys agree? Kushina? Minato?"
At the end, he looked at the two former juniors, hoping for their support and approval.
However, their expressions were quite something, and both of them immediately broke into a sweat.
Kushina and Minato exchanged a glance, and then had a silent conversation with their eyes. Finally, Minato, under his girlfriend's urging, had no choice but to speak up.
"Well, Nawaki-san, actually Kai-kun already has a close relationship with another girl. Also, the Uchiha clan has arranged for an excellent woman of the same age to be his bodyguard."
"What I mean is, maybe… your suggestion isn't exactly suitable…"
Minato said this very tactfully, though he had a strong urge to complain.
Mainly because Nawaki called Uchiha Kai "Kai-nii," while they had to call Nawaki "san," which made their relationship feel rather abstract and left them with a lot to complain about.
After hearing Minato's polite explanation, Nawaki was taken aback. He then crossed his arms and fell into deep thought, his gaze shifting back and forth between Kai and Tsunade, who were chatting and laughing together, wondering what kind of earth-shattering issue he was considering.
But in the end, Nawaki mumbled, "Actually, it wouldn't be a bad idea for Sis to marry him too, right? From what you're saying, since Kai-kun already has two people, having Sis join wouldn't be a problem, right?"
"After all, my older sister is already in her thirties. She's at the age where she can't get married anymore, and with her personality, there probably isn't anyone left who would like her or who she would like, right?"
Upon hearing this, both Minato Namikaze and Kushina Uzumaki were stunned by this 'good little brother's' comment.
To speak like that about your own sister, you really are a great little brother!
The mischievous Nawaki had maliciously framed his older sister's actions, but Uzumaki Kushina and Minato quickly changed the subject.
After all, if Tsunade ever heard about this, they'd be covered in blood by the end of the day.
For Uchiha Kai, the experiment on Nawaki was complete, which meant the success of the card system bug. However, it also meant that the 'revival' privilege would surely be desired by others.
Family, friends, loved ones.
In this tragedy-filled world of ninjas, people were filled with regrets, just like those in the mental network world. Nearly everyone had their own regrets and people they wished to see again.
Even Tsunade, who had reunited with her brother, still had other people she wished to see.
It wasn't that she had completely moved on from Kato Dan. While she had hoped to meet her lost loved ones again, having seen her brother and filling the hole in her heart, the fear of blood loss had disappeared. Therefore, her obsession with Kato Dan wasn't as strong anymore.
Instead, it was her deceased family members that Tsunade longed to see again.
Others felt the same way, all hoping to reunite with their families through Uchiha Kai's ability.
But would such a power come without a cost or burden?
No one believed it, and they all felt that accomplishing such a thing would certainly be difficult.
So, no one made any requests and kept their desires buried deep inside, knowing that if the cost of such an ability were truly enormous, their requests would only bring Uchiha Kai trouble.
In fact, their concerns were justified. Uchiha Kai could indeed use the card skill bug to constantly gather souls from the Pure Land of the Ninja World and fill the public planes of the mental network world.
In theory, he could surpass Orochimaru and become the ultimate dream-weaver of the Ninja World.
However, just like how Uchiha Kai can only let seven people enter the mental network world, bringing the souls of the deceased into the mental network world also requires Uchiha Kai to bear the mental pressure.
Before reaching the limit, there is no discomfort, but once it exceeds the limit, it will cause him great mental strain.
To explain more intuitively, with Uchiha Kai's current mental power, he has a total of 50 points of mental burden capacity to store the summoned souls of the deceased.
However, the presence of Nawaki occupies 1 point, meaning he only has 49 points of mental burden capacity to 'spend.'
Moreover, the stronger the soul, the greater the mental burden on Uchiha Kai.
It's estimated that a powerful existence like the inherently evil Senju Tobirama would occupy 7-10 points of mental burden by himself.
If such a being is collected, Uchiha Kai won't be able to store the souls of other deceased.
So, if Uchiha Kai truly wants to create a world in this second world that can hold enough deceased souls, he must continue to improve himself, grow stronger, and this is only a temporary solution.
To solve these issues thoroughly, Uchiha Kai must figure out how to build a 'server' dedicated to the mental network. But this is no simple task.
Currently, with his level 3 mental network mastery, he doesn't have the ability or technology to construct a server yet. He needs to reach a higher level.
Uchiha Kai only knows that upgrading the mental network will unlock the corresponding functions.
Therefore, while the number of deceased souls Uchiha Kai can store is limited for now, if given enough time, he will eventually be able to create the Ninja World's version of the Hall of Heroes, taking all the Pure Lands the Six Paths Sage spent a thousand years to create, and in the end, even bring the Six Paths Sage over to work for him.
Of course, this is just a fantasy. Whether he can truly achieve it will have to wait and see.
**********
Support me on my patreon and read upto 30 early chapters.
patreon.com/PirateKing24