Under Fugaku's deeply resentful gaze, Obito had no choice but to flee in embarrassment.
After leaving the Uchiha compound, Obito thought for a moment and decided to use Kamui's teleportation ability to visit Sara in Rōran.
Before leaving, he first stopped by Minato's house, where Kushina was the one to open the door.
Kushina asked in confusion, "Obito, why are you here?"
Obito grinned, "Big Sis, here's the thing. I came today for two reasons."
"First, I want to collaborate with you on the chakra energy conversion machine business. I think that as long as it can convert chakra into energy, a lot of shinobi would find it useful."
"Second, I hope to obtain a complete set of shinobi training materials from you. You inherited Uzumaki Mito's legacy, so you should have those, right?"
Kushina was puzzled, "I do have those materials, but aren't you learning just fine at the shinobi academy? What do you need them for?"
Obito explained, "I plan to visit Rōran and bring the materials to Sara. Even though she has become a jinchūriki, she wasn't originally born a shinobi, so I think she needs some foundational knowledge."
Hearing Sara's name, Kushina became interested, "You mean the perfect jinchūriki who can use the power of the Ryūmyaku freely and even form a chakra cloak around her body?"
Obito nodded, "Big Sis, Minato-sensei should have already told you how to become a perfect jinchūriki, right? Have you tried making peace with the Nine-Tails?"
At the mention of this, Kushina frowned in frustration, "I've tried, but it's really difficult."
"The Nine-Tails is full of hatred. It wants to break free from the seal and destroy everything. There's no way to have a normal conversation with it."
"So, even though I want to get along with it peacefully, I don't dare to actually try. If I let my guard down and it causes another Nine-Tails incident, what would I do then?"
Saying this, Kushina suddenly changed the subject, "Obito, since you're going to see Sara, why not take me along? I also want to see what a perfect jinchūriki using the Ryūmyaku's power looks like. It'll be a good learning experience."
Obito was a bit tempted but then considered that Big Sis's identity in Konoha was rather sensitive. He couldn't help but sigh, "Big Sis, if I disappear for a while, no one would probably notice, but if you disappear, the whole village would be in chaos soon enough."
Kushina also realized this, and her mood visibly dropped.
Ever since she became the Nine-Tails' jinchūriki, her freedom had been restricted. She wasn't allowed to do this, wasn't allowed to do that. She was completely fed up with it.
Just then, a voice spoke up.
Minato walked over and said, "Go ahead and go. I'll cover for you. The Third Hokage and the others won't notice anything unusual."
Obito was overjoyed, 'Right! I completely forgot about Minato-sensei!'
He immediately nodded.
"In that case, Minato-sensei, I'll take Big Sis out for just half a day. You… make sure to cover for us properly. Don't let anything slip."
Minato smiled, "No problem. I'll just say she's teaching you about sealing techniques and doesn't want to be disturbed. That way, I can cover for both of you at once."
Kushina instantly became happy. She hugged Minato and gave him a kiss, "Hubby, you really are the best! I can finally go out and have some fun."
After saying that, she eagerly stood in front of Obito, "Obito, let's go. Right now."
Seeing this, Obito nodded, activated his Mangekyō Sharingan, and used his right eye's ability to teleport Kushina into the Kamui dimension before following right after.
The two of them arrived at Obito's modified secret research base. Like a curious child, Kushina explored every corner, touching and playing with everything, clicking her tongue in amazement.
Then, she complained, "Seriously, Minato—this place is so fun, yet he never brought me here. This is my first time coming here."
Obito chuckled and pointed to the central energy control console, "Big Sis, that's the device I asked you to make. All the energy in the Kamui dimension is supplied by it."
Kushina immediately walked up in curiosity. Seeing that it was indeed something she had built, she was quite surprised.
"I didn't expect something I casually put together to be so useful. The purple chakra energy stored inside. Is that the power of the Ryūmyaku?"
"Did Rin provide it?"
Obito smiled, "Yeah, Rin charged it with a large amount of Ryūmyaku chakra. Twenty thousand kilocalories in total."
"Based on calculations, if there's no material degradation, this can power the place for 164 years."
"One hundred and sixty-four years?"
Kushina was shocked. While jinchūriki had large chakra reserves, if they used their chakra in battle, it would still run out quickly, especially if they kept launching Tailed Beast Bombs.
But when used for energy supply, it could last this long?
Suddenly, Kushina spotted a road-like structure, "Obito, make one for my house too! Do you know how expensive electricity is? If we can be self-sufficient, think of how much money we'd save!"
Obito teased, "Big Sis, it's not like you're short on money."
Kushina punched him on the head, "Even if I'm not short on money, I can't waste it. Saving where I can is the way to go. These days, I even haggle when buying groceries. Isn't it good to save up more for Naruto?"
Obito held his head, falling silent for a moment.
'So that's it.'
'After hearing about the future Naruto from my timeline, Big Sis feels guilty toward the unborn child and wants to make up for it in advance.'
So he nodded, "Alright, I'll set one up for you and Minato-sensei's house too. With just one charge from the Nine-Tails' chakra, it could probably last for several lifetimes."
Kushina grinned, "I never thought the Nine-Tails' chakra could be used like this. If jinchūriki didn't have to fight in wars, wouldn't that be even better?"
Obito's gaze deepened, "Yeah, once we get to Rōran, you'll be even more amazed. Even though the desert lacks resources, Rōran, using the power of the Ryūmyaku, has built an enormous city that in some ways is even more advanced than Konoha."
"This might be the real purpose of Tailed Beasts. Just one can support so many people. What about nine? Or even the Ten-Tails?"
"And it's not just Tailed Beasts that have chakra. Every shinobi does. If all shinobi could provide energy, what would the shinobi world become?"
Kushina's eyes sparkled, "So, Obito, you made this chakra device to bring peace to the shinobi world using this method?"
Obito nodded, "Yes. Whether through force or negotiation, those methods only treat the symptoms, not the root cause."
"The real issue in the shinobi world is a lack of resources. If we solve that, and everyone can live well, no one would want to start wars."
"As long as the population doesn't explode too much, peace will naturally come." [T/N: It will naturally explode. With enough resources, people will reproduce like rats]
Kushina patted Obito's shoulder.
A world like that, how could she not yearn for it?
She sighed, "Obito, go for it. Big Sis will always stand by your side!"
At that moment, the invisible, intangible, yet seemingly unbreakable barrier between them—disappeared.
Big Sis had truly accepted him, leaving behind the past.
Obito smiled as tears streamed down his face.
At last, he was bringing light to this world.
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