"The Rasengan? That Ninjutsu Minato uses all the time? What about it?" Uchiha Mikoto asked when she saw the Rasengan in Uchiha Yin's hand.
Mikoto wasn't surprised in the slightest that Uchiha Yin knew the Rasengan.
He simply rarely used that Ninjutsu.
"That's right, the Rasengan. It takes Chakra Shape Transformation to its limit. Minato developed it after seeing a Tailed Beast Bomb, but he never completed it."
Uchiha Yin nodded.
"Never completed it?"
"No. Minato didn't incorporate Chakra Nature Transformation into the Rasengan. The Rasengan as it stands is only an unfinished technique."
Uchiha Yin answered Mikoto's question.
"But that must be difficult. The Rasengan already pushes Chakra Shape Transformation to its limit, and keeping it stable isn't easy. Adding Nature Transformation would be harder still."
"And what does that have to do with Yin-Yang Release?"
Mikoto asked.
"You're right. Adding Chakra Nature Transformation to it is extremely difficult."
"As for what it has to do with Yin-Yang Release... what if I added Yin-Yang Chakra to the Rasengan?"
A mysterious smile appeared on Uchiha Yin's face.
He gently infused the Rasengan in his hand with Yin-Yang Chakra.
An inexplicable aura suddenly seeped into the once-azure Rasengan.
It was subtle, yet a suffocating pressure immediately filled the tent.
No, not just the tent. The entire Camp seemed to tremble.
For a moment, the whole Camp fell utterly silent.
The many shinobi in their tents jolted awake.
"Is the enemy attacking?"
Uchiha Fugaku and Hyuga Hiashi both shot upright in their beds, cold sweat on their faces.
Uchiha Yin realized what had happened and hurriedly erected a Barrier.
It sealed off the aura.
To those outside Konoha's Camp, the terrifying aura had vanished in an instant.
"What just happened? Did someone powerful pass by? No, where in the Shinobi World would