A traveler from another world always brings changes to the world they arrive in.
However, in Teyvat, there have been travelers, yet very few seem to have made significant changes.
Perhaps there were interventions, or perhaps not—Takumi didn't know the full story.
But since he was here, he decided to make a difference.
Regardless of what the future held, Takumi would leave his mark.
With Zhongli's support, he could proceed freely.
After Albedo confirmed this, he nodded in understanding.
"No wonder."
"Miss Alice has mentioned similar ideas before."
Klee, standing nearby, blinked in surprise.
"Really?"
"Brother Albedo, Mom had the same idea as Brother Takumi?"
Her eyes widened with excitement.
Albedo nodded, a hint of helplessness in his expression.
"Yes, but Miss Alice's ideas were too outlandish."
"The Knights of Favonius feared she would do something extreme, so they refused to support her."
"Eventually, she stopped mentioning it."
Alice had many wild ideas—cars, electricity, and even using Hilichurls to generate power in an endless cycle. She proposed forcing them into perpetual labor, reproducing endlessly to sustain a self-sufficient energy source.
A genius concept, albeit ethically questionable.
She also once suggested launching satellites from Mondstadt using wind currents to reach Celestia.
Now, Takumi's thoughts seemed eerily similar to Alice's.
If the two ever met, they would undoubtedly have much to discuss.
"Uh... Teacher Albedo."
"I need to tell you something."
Sucrose hesitated before speaking.
She felt it necessary to inform Albedo of what Klee had been up to.
After Albedo finished listening, he turned to Takumi with an exasperated look.
"Mr. Takumi, please don't teach Klee such dangerous things."
"She's still a child."
However, upon hearing Sucrose's criticism, Klee immediately pouted.
"Sister Sucrose, you're mean!"
"Klee won't play with you anymore!"
"I'm leaving!"
With that, Klee dashed out of the room.
Takumi chuckled.
"Klee is naturally gifted."
"There's nothing wrong with her playing with explosives."
"Her Constellation ensures she won't get hurt."
"If nurtured properly, she could become an incredible arms dealer."
"And let me tell you, the arms business is very profitable."
...
Hearing Takumi's reasoning, Albedo rolled his eyes.
But he ultimately let it go.
Having grown up under Alice's influence, he was no stranger to eccentric, brilliant minds.
If Klee ever managed to create an ICBM and point it at Celestia, perhaps then Albedo would start worrying.
...
Albedo decided not to dwell on it further and focused on his work.
Since funding was abundant, he would fully commit to the project.
Using Chaos Devices and Chaos Mechanisms to build vehicles?
It was certainly extravagant.
So, he decided to develop a more practical, low-cost version.
Replicating these components wasn't too difficult.
Meanwhile, Albedo was also intrigued by Liyue's new city.
It was designed as a completely new settlement, incorporating alchemical advancements.
The architectural style didn't resemble anything from Teyvat.
Many areas had been left unfinished—perhaps for future technological additions?
Electricity, perhaps?
Based on Takumi's explanations, Albedo understood what he was trying to achieve.
He had to admit, Takumi's vision was impressive.
As Albedo began his research, Takumi was also busy.
He had successfully developed copper wiring.
With samples ready, production was the next step.
Some factory buildings had already been completed.
Takumi immediately ordered materials and equipment to be delivered.
Now, production could begin.
Even though electrical infrastructure wasn't fully established yet, preparations were necessary.
Laying the wiring first would make future installations much smoother.
Guili Plains was bustling with activity.
Takumi also needed to train craftsmen on electrical wiring installation.
Switches and connectors had to be manufactured.
Lighting fixtures also needed development.
For nearly a week, Takumi worked tirelessly on these advancements.
When the first light bulb was completed, he immediately called for Keqing.
"What is it?"
"Why did you call me?"
Keqing was puzzled.
Then, her eyes fell on the strange glass object.
"What's this?"
"Come here."
"Release a small amount of Electro energy into this wire."
"I need you to test something."
Seeing Keqing approach, Takumi instructed her, pointing at the wires.
Still confused, Keqing asked:
"What exactly is this?"
"A light bulb."
"Just try it and see."
"If it works, we'll install these in houses and on street lamps."
Hearing this, Keqing's eyes lit up with interest.
Without hesitation, she followed Takumi's instructions.
She carefully released a small amount of Electro energy into the wires.
As the elemental energy flowed in, the light bulb gradually glowed with a soft yellow light.
Seeing this, Takumi knew he had succeeded.
Keqing's eyes widened in amazement.
"Just a little bit of Electro energy lights this up?"
"This is incredible!"
"Increase the power."
As she marveled at it, Takumi prompted her to raise the output.
Keqing complied, gradually increasing the energy flow.
The light grew brighter and brighter.
Then—
Pop!
The bulb shattered with a small explosion.
Keqing froze in shock.
Takumi, however, remained calm.
He had expected this.
There were still limitations, but it was already within expectations.