"Compared to the deer of the Nara clan, the nutritional value of Sea King meat is far superior."
"This one is only a small Sea King species. What if it were one of those massive Sea Kings, spanning hundreds or even thousands of meters?"
Tanaka activated his Byakugan, observing his internal organs with clarity.
He could see everything clearly. The reason he could mold chakra continuously for an entire hour was entirely due to the three pounds of Sea King meat he had just consumed.
At this rate, while the total amount of chakra he could store was uncertain, reaching a level of chakra equivalent to "tons" would only be a matter of one or two years.
In other words, by the age of 10.
Once his body fully matured into adulthood, his chakra reserves would increase even further.
At that point, even if it was still "tons" of chakra, it would be in metric tons.
"Unfortunately, my body's digestion and absorption capabilities can't keep up. Even with Sea King meat, I can only mold chakra for about an hour before I have to stop."
"If I had Kaido's... no, the physique of the D clan, molding chakra continuously for two or three hours wouldn't be a problem at all."
Tanaka stopped molding chakra. After more than an hour, he finally felt some discomfort.
First, his nutrition couldn't keep up.
Second, his digestion and absorption capabilities couldn't keep up.
Third, his body and spirit couldn't keep up.
Life Return... At this thought, an ability surfaced in Tanaka's mind.
An ability that could grant even an ordinary person digestion and absorption abilities comparable to, or even surpassing, those of the D clan.
And that was only a fraction of what Life Return could do, not even its full power.
"If I mastered Life Return and ate Sea King meat for every meal, could I mold chakra nonstop for 24 hours?"
Tanaka pondered for a moment and arrived at an answer.
No!
Forget molding chakra for 24 hours—even 12 hours would be impossible.
It wasn't that Life Return was lacking.
It wasn't that Sea King meat was ineffective.
It was that the tenketsu and chakra pathways couldn't withstand it.
Whether using ninjutsu, taijutsu, genjutsu, or simply molding chakra, everything depended on the body's chakra pathway system.
Just as Guy couldn't sustain the Eight Gates for long periods—because even if the body could endure it, the chakra pathway system couldn't.
"Unless my body as tough as Kaido's, or as resilient as Big Mom's. Then, combined with Life Return and Sea King meat..."
Tanaka shook his head.
The monstrous physiques of Kaido and Big Mom were something they were born with. If one didn't have it from birth, they would never attain it.
Unless... A sudden thought struck him—what about the Seraphim from the One Piece world?
The clones of the Seven Warlords, fused with the Lunarian bloodline, and enhanced by Paramecia Devil Fruit genetic factors.
Vegapunk called them the "strongest humans."
Then there was Kabuto... By transplanting the cells of Orochimaru, Kimimaro, Karin, and the Sound Four, he combined multiple bloodline limit, secret techniques, and unique physiques into one body.
Both the Seraphim and Kabuto had achieved incredible power through genetic modification—in other words, through transplantation.
"So, the Op-Op Fruit... It can create a global or hemispherical space where the user has absolute control over kinetic energy, length, temperature, mass, density—everything."
"It can cut, swap, and merge anything seamlessly—limb transplants, organ transplants, even soul swaps, all without rejection, as if they were innate."
"Then what if I used the Op-Op Fruit to graft bloodline factors onto myself? Like Lunarian blood?"
"Or even implant bloodline limits into my body? Such as the Sharingan or the Rinnegan?"
A spark of inspiration ignited in his mind.
His imagination expanded, unleashing idea after idea—pushing the Op-Op Fruit into a realm even Law had never explored in the original series.
At the same time, a grand ambition began to take shape in his heart.
Using the Op-Op Fruit as a foundation, he would merge the bloodline factors and bloodline limits from both the One Piece and Naruto worlds into one body.
At this thought, his heartbeat quickened, and his eyes burned with intense passion.
For a long moment, he was lost in his ambition.
Buru Buru—
A sudden, urgent ringing came from his ninja tool pouch, snapping him out of his thoughts.
Buru Buru—
He reached into his pouch and took out a Den Den Mushi. Seeing it ringing non-stop, a faint smile of excitement appeared on his face.
Just what he had been thinking about had now come to him.
This was the Den Den Mushi left behind by Rosinante before he departed from Minion Island during his last visit to the One Piece world—meant specifically for keeping in contact.
In other words, the only person who could reach him through this Den Den Mushi was Rosinante.
Click.
As Tanaka answered the call, the Den Den Mushi instantly mimicked Rosinante's facial features, and his voice came through.
"Is that you, Tanaka?" Rosinante's tone carried a hint of uncertainty.
"It's me," Tanaka replied.
"Getting through to you wasn't easy at all! In the past two days, I must have called you at least twenty times."
"If I didn't know how strong you are, I would've started worrying that Doflamingo had caught you."
Upon hearing Tanaka's voice, Rosinante's tone noticeably relaxed.
After all, this was the man who had saved not only his life but also Law's—multiple times in a single day, no less.
With his personality, not being able to reach Tanaka for so long naturally made him anxious.
"No, I was just in a place with... bad signal."
Hearing the concern in Rosinante's voice, Tanaka explained briefly.
"... I see. So where are you now?"
The Den Den Mushi made a knowing expression.
"Same place—Minion Island."
Tanaka didn't hide it.
"The same place, huh? Well, that actually makes things easier. It'll be more convenient for me to find you."
Rosinante sighed in relief.
"So that means you've got some good news for me?"
A hint of anticipation appeared on Tanaka's face.
"Just as you guessed. I got the training methods for Haki. But only for Armament Haki and Observation Haki. Since Conqueror's Haki can't be strengthened through training, there's no such thing as a training method for it."
Rosinante's voice carried a trace of pride and satisfaction, as if he knew how much this information meant.
"That's more than enough."
Hearing that Rosinante had actually obtained the training methods for Haki, Tanaka's grin was so wide that even Shanks' Divine Departure couldn't knock it off his face.
Even if it was only Armament and Observation Haki, it was more than sufficient for him at this stage.
After all, he still wasn't sure if someone like him, who wasn't originally from the One Piece world, could even train in Haki.
If he couldn't, then having a training method for Conqueror's Haki wouldn't make a difference anyway.