"Since you've decided to risk death to help me with this experiment, I won't hide anything from you. I'll tell you everything I plan to do and my thoughts."
Makoto found a small stool and sat down by the hot spring pool.
He needed to explain things clearly first.
He was conducting a scientific experiment for success, not just torturing Tsunade for fun.
"You already know about using the Tsukuyomi World combined with Kurama Yakumo's ability of 'Turning Illusion into Reality' to convert ordinary chakra into Tailed Beast Chakra, so I won't repeat that."
"What I want to say now is that even with Yakumo Kurama's current healthy body, transferring this much chakra will put tremendous pressure on her."
"Therefore, I must use my 'Amplification Ability' to enhance her. This 'Amplification Ability' essentially involves infusing Natural Energy, similar to Sage Mode."
"If this experiment succeeds, it won't just solve the immediate problem—it will also add another approach to our overall plan for dealing with the Otsutsuki. After all, when dealing with that clan, Taijutsu and Sage Arts are the most practical weapons."
"Are you saying you can mass-produce ninja capable of using Sage Mode?" Tsunade asked after listening carefully, her eyes widening.
The "mass production" Tsunade referred to didn't mean an actual factory assembly line.
Compared to the original handful of people in history who could use Sage Mode (Jiraiya, Minato, Naruto, Kabuto), if Makoto could enable even ten people to use Natural Energy, that would basically count as mass production.
"Simply using Natural Energy for enhancement isn't anything particularly rare. Orochimaru's Cursed Seal is something similar."
Makoto had to admit that Orochimaru's research was indeed decades ahead of the ninja world.
When the Otsutsuki hadn't even appeared on the radar yet, Orochimaru was already researching Cursed Seals that amplified abilities using Natural Energy.
Those Sound Ninja who could use Cursed Seal "transformations," along with Kimimaro—regardless of their actual combat strength, just in terms of mechanics, they had indeed reached a level where they could directly damage an Otsutsuki.
If they encountered a clumsy Otsutsuki like Urashiki, winning wouldn't be impossible.
"My Natural Energy contains a trace of violent energy. This energy can further enhance the effects of the Natural Energy I've already compressed."
"However, the side effect is that the body might not be able to withstand it."
"So I need your help to physically sense and find an appropriate amount—one that ordinary ninjas can endure."
Makoto explained the specific details of what he needed Tsunade's assistance with.
This situation required someone like Tsunade, who could autonomously recover, rather than randomly selecting a grunt and using Crazy Diamond to repair them when they exploded.
Only through continuous autonomous recovery could the precise required dosage be determined.
Since Tsunade could withstand the dismembering effects of the Heavenly Transfer Technique, she should also be able to endure this power of Makoto's.
"Understood. When do we start?—Wait a moment, let me call Shizune first."
Tsunade was worried that if she couldn't withstand it and reached a point where she passed out before healing herself, she would need Shizune's help to resuscitate her.
After Shizune arrived, Tsunade briefly explained the situation to her, while Makoto finished his preparations during this time.
Makoto held his hands out in front of him, palms cupped as if holding water and a mass of Natural Energy gathered in his hands.
Gradually, it transformed from an ethereal, gaseous state into a visible, crystalline stone.
"What pattern would you like?" Makoto looked up and asked Tsunade, who was staring in astonishment.
'Pattern?'
Tsunade snapped back to reality and pondered Makoto's question.
The pattern he mentioned must refer to the design on this stone.
In other words, this stone formed from condensed Natural Energy was what Makoto wanted her to test.
So, what pattern should she choose? Konoha symbol? The word "Gamble"?
'No way.'
Tsunade immediately dismissed both options.
She needed to show some femininity here!
Choosing either of those would surely lower his impression of her.
"Then... then make it a heart." Tsunade averted her gaze and answered softly.
'Damn it, this is so girly. A heart? Its so nauseating.' Tsunade felt extremely awkward inside.
"Are you sure?" Makoto looked at Tsunade in surprise.
"Sure."
"Alright then."
Makoto finally injected a trace of the most crucial Solar Energy into the stone, completing its creation.
Indeed, ever since Makoto entered his unique "Sun God" Sage Mode while facing Momoshiki, he hadn't come away empty-handed.
First, he could now manually compress Natural Energy into a solid state.
Second, the Natural Energy flowing within his body had begun to contain a portion of Stellar Natural Energy from the sun.
This energy was just the right amount—exactly what his current body could withstand.
Unlike when activating the full "Sun Sage" mode, he didn't need constant repairs to prevent his body from being torn apart.
The trace of Solar Energy that Makoto finally injected into the Natural Energy stone was the core of this experiment.
Previously, when enhancing Gaara and Temari's abilities, Makoto directly injected Natural Energy through physical contact.
Now, in theory, they only needed to wear this stone created by Makoto to independently use the Natural Energy within it and enter Makoto's version of Sage Mode.
Moreover, thanks to Makoto's specially designed circuits and the Solar Energy contained within, this stone wasn't a consumable item.
After the Sage Mode ended, the stone would automatically absorb Natural Energy from the environment to replenish what was consumed.
...
This description sounded a bit like Mega Evolution stones from Pokémon.
'I wonder if Tsunade's speed stat will drop by 10 after using it, just like Garchomp?'
"Take it."
Makoto tossed the completed stone over.
Tsunade caught it, then suddenly seemed to remember something and almost threw it away like a hot potato.
But knowing the stone's importance, she forced herself to keep holding it.
She looked rather flustered.
"Don't worry, it won't activate from normal handling. In fact, certain conditions need to be met for activation. You can test it yourself."
Makoto didn't elaborate further.
The so-called additional conditions were somewhat similar to Pokémon's Mega Evolution.
Mega Evolution requires a deep bond between Pokémon and trainer.
While Makoto's version didn't require such a profound connection, at a minimum, the user must harbor no hostility toward Makoto and must genuinely be an ally to activate it.
"Alright."
Holding the stone, Tsunade activated the Strength of a Hundred Seal.
The Yin Seal on her forehead transformed into dark, intricate patterns that spread across her entire body. She also activated Creation Rebirth.
Then, worried she might accidentally drop the stone during the intense process, Tsunade had Shizune take the sash from a nearby bathrobe and tie the stone securely to her waist.
Actually, Makoto wanted to say that simply holding it for activation would suffice.
There was no need to worry about dropping it.
But since Tsunade had already taken this precaution, and it wasn't really problematic, Makoto decided not to comment.
"Let's begin."
Tsunade took a deep breath.
This experiment wasn't just for gaining Makoto's favor—it was for Konoha, for the ninja world, and for their cause against the Otsutsuki clan.
As the stone activated, a wave of scorching heat began spreading from Tsunade's abdomen.
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