Seeing this information, Satsuki thought for a moment before calling forth the dormant system in her mind.
The system responded sluggishly, "Host, you rarely take the initiative to contact me. What new question do you have this time?"
"What's the next world?"
One sentence from Satsuki caused the system to crash.
Same formula, same flavor.
After a while, the system finally recovered and replied, "Host, what do you mean by that?"
"I don't have the time to waste talking to a wall," Satsuki said bluntly. "Or are you going to make me go through my reasoning process again before you decide to be honest?"
"I honestly have no idea what you're talking about," the system feigned ignorance.
Satsuki was already used to the system's usual evasive tone. She simply said, "I remember you once called yourself 'The Strongest System Across All Worlds.'"
"That's right."
"Then theoretically, your existence isn't that simple."
Satsuki's thoughts churned, but she didn't try to hide them. Instead, she spoke directly: "Since it's 'across all worlds,' there are only two possibilities: 1. You exist as a multiversal entity. 2. You possess the ability to traverse multiple worlds."
She laid out her conclusion.
As expected, what followed was a long silence from the system.
Satsuki didn't mind. This kind of silence often revealed even more. After a brief pause, she continued, "But judging from the tasks you've given me, I lean toward the second possibility. Because if you couldn't travel between worlds, then I've already become the strongest in the Naruto world. After subjugating the Dragon-Headed Sage, I've now completed the objective of assembling the strongest force across worlds."
"So, what's next?"
Satsuki asked softly, then answered herself, "If it were merely about completing missions, then the system should've immediately issued the next one. But instead, I received a Time–Space Medal."
She stared at the platinum-like medal floating in the dark void of her consciousness.
"Based on my deductions, after completing those two missions, I must have unlocked a new function in you—and the Time–Space Medal is the key to that feature."
"Given its name, I believe it's related to time and space, which makes sense. Combine that with your name, and the answer is obvious, isn't it?"
"It allows me to travel between worlds using one of your functions."
"So, that's why I asked: What is the next world?" Satsuki concluded coldly. "Next time, don't make me explain something so elementary. Understood?"
After a long silence, the system finally spoke: "Alright, host, you guessed correctly. I do have the ability to traverse worlds. But I didn't hide that on purpose."
As it finished speaking, a spatial void suddenly appeared in Satsuki's sea of consciousness.
Hovering above that spatial rift was the Time–Space Medal, anchoring it within her consciousness.
"Actually, many of my functions are sealed. Only when your mission reaches a certain stage do I unlock new ones. It's quite strange."
"Every time you complete a task, either a function or the main quest gets further unlocked. The two are almost in sync. Sometimes, I don't even know what feature has been unlocked until you point it out. Only then do I become aware of that function."
Interesting.
Satsuki didn't judge whether the system was telling the truth. If it was lying, then so be it—she'd just play mind games with it in the future. But if it was telling the truth, then the implications ran deep.
"Causality, huh?"
Satsuki buried that thought deep in her mind. It was still beyond her reach. Even though she had become one of the strongest beings in the Naruto world, Satsuki firmly believed in one principle—strength is always relative.
"So that means you also have no idea what the next world is?"
"I don't know what the next world is," the system replied. "I merely provide the function to traverse the worlds, along with two different methods of traversal. After that, fixed tasks will be issued."
Two methods of traversal?
Satsuki's interest was piqued. "Two methods? What are they?"
"One is soul transfer—your soul inhabits a body in another world. Depending on the host body, the system must expend varying amounts of energy."
The system gave an example: "Placing you in the body of this Ōtsutsuki clan member cost me all of my energy at the time. Most of my functions were forcibly shut down, and I had to spend an entire year recovering before I could reboot."
"You could've just chosen an ordinary person for me to possess," Satsuki said, puzzled. "That would've saved a lot of energy."
"That's just how the program is written," the system replied irritably. "As the 'Strongest System Across the Worlds,' I naturally seek the strongest candidate within the available range—otherwise, the task would be impossible to complete."
"So, you're saying that no matter the host's latent potential, I will always face the strongest in that world?"
"Roughly, yes. And if you fail, I disappear too. That's why I spared no effort in choosing a body from the Ōtsutsuki clan."
No wonder this system had always been so indifferent—unlike the newbie gift-pack–throwing systems from her past life's web novels.
With that in mind, Satsuki softened her tone slightly. "And the second method?"
"The second way is for you to traverse with your current body and fuse with the strongest template I can find in that world."
The system added, "However, I need to remind you—because every world is governed by its own laws, your power will change. It will be converted to match that world's system. How much power is retained or increased is hard to predict. I currently have no database on that."
"Understood."
Satsuki then pointed to the Time–Space Medal. "So what does this do?"
"The Time–Space Medal provides the energy required for world traversal. It also self-charges. At this level, if you don't complete extra tasks, it'll fully recharge in about three years."
Three years wasn't particularly long.
But when she heard the word "time," Satsuki's mind flashed with a key question. "Once I enter another world, how do the time flows between the two compare?"
"No idea."
Yep, classic system reply.
Still, the answer didn't bother Satsuki. She hadn't planned on jumping to the next world just yet anyway. She had no urgent reason to do so—and much still needed her attention here.
Three days later—
Satsuki arrived at the Source of the Ryūmyaku in Rōran. After initial development, the location now met her standards, making it suitable for the creation of the Hyūga clan.
She cultured nearly five hundred samples using her own cells and placed the resulting tissues into an incubator. This time, she also added a protective isolation barrier to prevent external contamination.
Through pre-built pipelines, Ryūmyaku chakra was channeled under the Giant Tenseigan's control into designated conduits. Since she didn't yet know what energy intensity best supported cell development, Satsuki divided the project into multiple experimental groups, each with different Ryūmyaku chakra levels.
This process alone took more than half a day.
It would take about a week to observe results—not too long, but not short either. With nothing else to tend to, Satsuki decided to spend this time cultivating sage chakra.
With Candle Nine Yin's help—even though she had destroyed the Tenryū Heart Cave with Earth Wheel Reincarnation Destruction—Satsuki had managed to absorb a large amount of natural energy from that realm.
That natural energy had been sealed into the vermilion mark on her forehead. Now was the time to release it and merge it with her Ōtsutsuki chakra.
She still remembered that her initial Tenseigan awakening had occurred after triggering the Sage Puppet Formation in her family's secret sage land—a fortunate result of exposure to natural energy.
This confirmed that natural energy had some synergistic relationship with Ōtsutsuki chakra or perhaps even Tenseigan chakra.
Much like how the ultimate Yin and ultimate Yang combined could give birth to the power of Creation of All Things—like how Uchiha Madara's Mangekyō Sharingan, fused with Senju Hashirama's body, could develop into the Rinnegan.
Even after awakening the Tenseigan, Satsuki didn't believe she had reached her limit.