"You're right, Obito... Though Aomi does not need our strength, we cannot just sit and watch him face the external enemies alone..."
Black Zetsu grasped Obito's hand firmly: "It's a matter of attitude! Suppose, I mean suppose... What if the final battle between Aomi and the Otsutsuki pursuers is just missing the Chakra from the two of us?"
"He's done so much for us, as his friends, we cannot abandon him..."
Obito, deeply moved, hugged Black Zetsu back: "I knew you would understand me!"
After the two embraced once more.
Obito furrowed his brow: "Rin... I feel that only I need to go... The enemy that even Aomi worries about must be exceptionally strong!"
"When the time comes, perhaps the aftermath of the battle will be extremely terrifying, and it might harm you..."
Black Zetsu snorted softly; its Dual Kamui Mangekyo revealed an eye power not much inferior to Uchiha Obito:
"Whom are you underestimating, Obito!"
"I am now not the creation of Yin Yang Release with Hashirama's Cells, but a ninja bearing Uchiha Rin's name!"
"Do you want me to hide alone in the Alternate Space, not knowing your fate, like a deserter?"
"Isn't fighting the Otsutsuki pursuers dangerous for you? This battle is for the Ninja World, for the future and peace of all people, how can ninjas who haven't shed blood and sweat on this battlefield step into the new era Aomi is creating?"
Compared to the somewhat naive Obito.
Black Zetsu was adept at debate and persuasion; in its lifetime, except for being played dizzy by Aomi, it hasn't lost to anyone else...
And in terms of wanting to join the battle with Obito to support Aomi...
Black Zetsu's thoughts were actually much like what it said, but the crux was understanding Aomi—its brother, someone who when you do things for him, will at least treat you fairly...
Compared to hiding in the back, even if Aomi said so himself, Black Zetsu considered fighting on the front lines for Aomi is safer than hiding.
Moreover...
This might also be Aomi's test for this family member!
"Aomi, I truly don't know how to thank him..." Obito stared blankly at Black Zetsu's Mangekyo Sharingan full of eye power, letting out a long sigh:
"With the enemies before us, Aomi has depleted so much Chakra for you and me..."
Black Zetsu nodded silently, softly saying:
"Obito, if you respect me, and also respect my identity as a friend of Aomi, then don't talk about other matters; fight side by side to expel the invading Otsutsuki!"
"Respect, of course I respect... Being able to fight alongside Rin, that's more than wonderful..." Obito nodded hurriedly, then furrowed his brow:
"But what should we do? Should we organize the Ninja World?"
Black Zetsu chuckled, shaking its head, lightly knocking Obito's head once: "Aomi has long turned the Ninja World into a fist..."
"We just need to show up straightforwardly and express our intention to support Aomi..."
Black Zetsu sighed: "You and my bodies were both crafted by Aomi... With Senju Tobirama around, he will definitely recognize it without causing misunderstandings."
Though Black Zetsu didn't know the specific connection between Senju Tobirama and Aomi...
But just Senju Tobirama being able to exist for so long within Aomi and being resurrected by Aomi personally and given Uchiha's powers indicates this person is quite worthy of respect!
Who has had such treatment...
Looking across the Ninja World, it's only Black Zetsu itself, Obito, Kaguya, and Tobirama—four people in total!
Within the Ninja Alliance Army where Senju Tobirama played a major role, Black Zetsu saw him as likely Aomi's representative for controlling and integrating the forces of each Hidden Village...
Black Zetsu didn't believe Aomi would trust the ninjas, who hadn't united for a millennium, to autonomously come together before the impending great enemy...
If that's the case, being naive and careless wouldn't be Aomi's style!
Certainly, there must be a supervisor overseeing everything.
And Senju Tobirama plays that role.
"Alright... I'll follow your lead, Rin! Now let's get going!"
After "Uchiha Rin" won the resurrection contest, thanks to Black Zetsu temporarily raising its intellect due to its transformation, its brain returned to its proper level.
Whatever Black Zetsu said became the truth...
Thus.
Just arriving in the Otherworld, Black Zetsu and Obito utilize Kamui's power to return to the Ninja World, searching for the main force of the Ninja Alliance Army.
With these two joining...
The final piece of the Ninja World Alliance Army's map was completed.
Obito, after all, is close to an Eternal Mangekyo entity and possesses the Kamui Dojutsu to bolster Ultimate Susanoo's mobility somewhat.
Though Aomi paid a price with some Chakra.
In the final formation, beyond the burning of the Death Gate, the Chakra that Obito and Black Zetsu obtained from Aomi will be returned to Aomi over a hundredfold...
——
Konoha.
At the moment, a broad square meeting was underway.
"The situation is roughly like this..."
Senju Tobirama looked around at the people before him and spoke slowly: "To pass Aomi's test and complete the theme of unity, my plan is to establish such a Jutsu."
Senju Tobirama laid out the concept of Cyan Water Jutsu openly before everyone's eyes.