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Yuuki Yuichi was taken aback by Namikaze Minato's words, but then he scratched his head as he pondered.
"What ninjutsu is my brother-in-law developing?"
Hearing Yuuki Yuichi call him brother-in-law, Namikaze Minato was momentarily stunned, then smiled as he replied, "Actually, it's nothing much."
"I'm working on developing a Muji Ninjutsu."
With that, Minato began to share his idea.
He didn't expect Yuuki Yuichi to have any concrete suggestions, but he was a bit frustrated and just felt like talking it over.
The ninjutsu he envisioned was a Tailed Beast Bomb imitation—a technique inspired by the power of the Tailed Beasts.
Now aware that Uzumaki Kushina had a Tailed Beast sealed within her, he hoped to develop this jutsu to protect her.
After listening to Minato's idea, Yuuki Yuichi nodded to himself. This is the Rasengan.
He actually had some knowledge of how the Rasengan worked but had forgotten the finer details. "Since you're forming the Rasengan by hand, why not try using chakra to reverse the spin?"
In his memory, the Rasengan involved layers of chakra being wrapped and spun in alternating directions.
"Yuichi, what made you think of that?" Minato asked curiously, looking at Yuuki Yuichi.
Initially, he hadn't had high hopes, but Yuichi's comment sparked inspiration.
"Reverse rotation?"
Minato murmured, raising his hand to form a ball of chakra in his palm—not yet the Rasengan.
The chakra in his palm swirled in a single direction, but as Minato studied it, he began experimenting based on Yuuki Yuichi's suggestion.
Watching the chakra swirling in Minato's palm, Yuuki Yuichi felt a sense of awe.
This ninjutsu would become a core technique in the world of shinobi.
It was like an inheritance of sorts.
Developed by the Fourth Hokage, Namikaze Minato, to protect Uzumaki Kushina, it would later be passed to Jiraiya and Hatake Kakashi, who would eventually teach it to Naruto Uzumaki.
It would go on to become Naruto's signature move.
Could this be seen as a unique form of protection?
With these thoughts, Yuuki Yuichi watched Minato's efforts. The once stable but harmless chakra sphere had become turbulent, its circular form losing stability.
After a while, Minato released the jutsu and shook his head.
"Still too hard."
He'd tried to split the chakra into two opposing flows, rotating them in opposite directions, as Yuichi had suggested. But the difficulty was high, and chakra kept leaking away.
If it weren't for his superb chakra control, the sphere might've collapsed the moment the chakra streams collided.
But Minato was pleased with the attempt.
Feeling a lingering sting in his hand, Minato smiled in satisfaction.
Though unsuccessful, Yuuki Yuichi's insight had helped him visualize a path toward making the jutsu lethal.
"Yuichi, thank you so much."
"You've solved a big problem for me!"
Seeing Minato's bright smile, Yuuki Yuichi shook his head, saying, "Brother-in-law, you don't need to thank me."
"We're family, aren't we?"
Yuuki Yuichi also smiled. Hearing this, Minato reached out, trying to ruffle his hair, saying, "Yes, we're family!"
"Don't touch my head!"
Dodging Minato's hand, Yuuki Yuichi complained, "It's impolite to touch someone's head!"
Seeing Yuichi's reaction, Minato remembered something Kushina had told him—Yuuki Yuichi disliked people touching his head.
With a chuckle, he said, "Alright, I won't touch it."
Then, he paused, and with a bright smile, he added, "You two go home. I'm going to keep working on the jutsu!"
"When I've perfected it, I'll teach it to you."
Watching Minato's cheerful look, Yuuki Yuichi glanced at Yuhi Kurenai beside him, then took her hand and prepared to leave.
But as they turned, he remembered something and called back, "Brother-in-law, you could try compressing and layering the chakra, like a spiral—one layer clockwise, one layer counterclockwise. Then compress and stabilize it."
With those words, Yuuki Yuichi led Yuhi Kurenai away.
Watching them go, Minato rubbed his chin thoughtfully before murmuring to himself.
"Yuichi has the potential to be a second-generation Hokage!"
He felt Yuuki Yuichi's suggestion was promising!
He had long known about the Tailed Beast sealed within Kushina, but seeing another village's jinchuriki release a Tailed Beast Bomb on a mission had shown him the terrifying destructive power it held.
The destructive force of a Tailed Beast Bomb surpassed any S-Rank forbidden technique he'd seen.
If unleashed in the village, it could level everything.
Minato's motivation for creating this jutsu was to protect Uzumaki Kushina and safeguard the village.
Though he'd only just started working on it, Yuuki Yuichi's advice had given him the clarity he needed.
In Minato's eyes, Yuuki Yuichi now seemed as capable in ninjutsu development as the Second Hokage, Tobirama Senju.
While he was still young and not yet as advanced as Tobirama, the potential was undeniable.
Minato, with this thought, also left.
As they walked down the street, Yuhi Kurenai looked at Yuuki Yuichi, stars twinkling in her eyes.
"Yuichi, you're amazing!"
"Minato," she paused, blushing and using the same title as Yuuki Yuichi, "You were able to help Minato with his jutsu development."
Watching Yuhi Kurenai blush, Yuuki Yuichi chuckled, "Of course!"
"I'm going to be a ninjutsu master!"
"I'll develop so many new techniques!"
"Yeah!" Yuhi Kurenai nodded seriously.
"Yuichi, you'll definitely succeed!"
She had this inexplicable confidence in him. In her eyes, Yuuki Yuichi could achieve anything he set his mind to.
Seeing her earnest expression, Yuuki Yuichi gave her a genuine smile.
"Kurenai, you're the best."
He tightened his grip on her hand, intertwining their fingers.
Meanwhile, Nohara Rin asked Uchiha Obito curiously, "Obito, why did you buy so many eye drops?"
She knew about Yuuki Yuichi's use of eye drops to activate the Sharingan, but it still seemed excessive.
Obito grinned, pointing to the cart filled with eye drops. "The price of eye drops went up recently!"
He wasn't kidding.
Because Yuuki Yuichi had demonstrated activating the Sharingan with eye drops, demand for them had surged, and prices had risen accordingly.
Even Konoha Hospital saw a steady stream of Uchiha clan members.
Watching Obito's expression, Rin looked at him with some skepticism and concern. "Are you planning to soak your eyes in eye drops like the others?"
"Of course," Obito began, then hesitated when he saw Rin's worried expression.
Scratching his head, he laughed awkwardly. "Well, no, not exactly."
"B-but why so many eye drops?" she asked.
"I'm going to bathe in them!" Obito declared proudly. "I think there's something in the drops that can help activate the Sharingan!"
Nohara Rin was speechless.
Looking at Obito, she tentatively asked, "Could it be that Yuichi-kun has a special constitution?"
"Really?" Obito thought for a moment. Although Yuuki Yuichi's resilience and physical strength were a bit abnormal, it didn't seem significant enough to explain his success.
Shaking his head, Obito dismissed the idea.
"Impossible! Yuichi is just healthier than average!"
Seeing Nohara Rin's worry, Obito leaned closer and whispered, "Besides, someone in the clan activated their Sharingan this way."
"One man in his thirties soaked his eyes for two days, then got them put back in at the hospital, and two days later, the Sharingan awakened."
That rumor was enough to keep eye drop sales soaring, even months later.
What Obito didn't know was that the man in question only awakened his Sharingan out of frustration after failing to activate it through eye drops alone.
But he, like many others in the Uchiha clan, attributed his success to the drops.
Now, some Uchiha who had previously scoffed at Obito's idea of using eye drops respected him for his dedication, thinking he would eventually open his Sharingan.
Walking together, Obito and Rin headed home.
Since their first-year lessons had wrapped up, Umino Ikkaku hadn't extended class any further.
"Hey, Obito, Rin!" Yuuki Yuichi called out from a distance.
"Oh! It's Yuichi and Kurenai!" Obito grinned as he turned and waved.
Nohara Rin blinked at the sight of the two holding hands and smiled.
"What's with the eye drops, Obito?" Yuuki Yuichi asked with a knowing look.
"Obito plans to bathe in them to speed up his Sharingan activation."
Despite hearing about Obito's method, Nohara Rin still felt uneasy.
Yuuki Yuichi couldn't help but feel exasperated.
The eye drops were one thing; he had opened his Sharingan in front of Obito, so the guy had gotten inspired.
But a full-on eye drop bath? That was just extreme.
"I'll open the Sharingan and finally beat that guy, Kakashi!"
Over the past months, Obito had been relentlessly challenging Kakashi.
"And then I, Obito Uchiha will become the Hokage"
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