A vibrant sea of colorful flowers gathered, shimmering in the golden sunlight.
"So beautiful,"
Tamayo exclaimed, then asked, "Is the Blue Spider Lily here?"
"That's right!"
Aoki pointed to the ground, where several "weeds" grew among the beautiful flowers.
"Which one is it?" A look of confusion crossed Tamayo's beautiful face; she didn't see any blue flowers.
"These are them!"
This time, Aoki pointed directly to one of the "weeds."
"This is the Blue Spider Lily?"
Tamayo's mouth gaped slightly; she hadn't expected it, but she couldn't quite believe it.
The treasure Muzan Kibutsuji had searched for over a thousand years, the one that allowed demons to overcome sunlight, was actually just a few "weeds"?
"Although they look inconspicuous, they are indeed blue spider lilies!"
Aoki said. "Blue spider lilies only bloom briefly during the strongest sunlight each year, and even then, they don't always bloom every year due to temperature, climate, and other factors."
Tamayo stared intently at the blue spider lilies for a few seconds. "It's really not easy for Mr. Aoki to find them."
"I also took a bit of a shortcut," Aoki shook his head.
Without his divine eye, finding blue spider lilies would indeed be no easy task.
Tamayo, holding her skirt with one hand and her sun hat with the other, squatted down.
"I hope they will bloom this year."
"They didn't last year, but there's still hope this year,"
Aoki said.
He didn't know the specific conditions required for the growth and blooming of blue spider lilies, but one thing was certain: strong sunlight.
And the area around Mount Kumotori had been experiencing sunny weather for half a month recently.
Tamayo diligently collected data.
Of course, she also wanted to overcome the sunlight.
That way, she could walk in the sun without any worries.
Aoki walked to a blank area nearby and stretched out his hand.
Bang.
With a loud bang, a huge sofa appeared.
Hearing the sound, Tamayo turned her head and stared blankly. "What's this?"
"A sofa!"
Aoki patted the sofa next to him. "Miss Tamayo, please sit down too. It might take several days. Although the Blue Spider Lily's blooming time is very short, it's not just a few minutes or seconds. You don't need to keep staring at it."
As he spoke, he took out the Ghost Wine Gourd and a small table, and smiled. "Perfect timing, this pot of Ghost Wine is ready. Let's drink while we wait."
Tamayo walked over and sat down next to him, asking curiously, "Mr. Aoki, where did you hide this big thing before?"
She thought for a moment. Mr. Aoki had pulled out things suddenly before, like today, but none of them were this big, and the shock wasn't as intense.
"Do you know about the Infinite Castle?"
Aoki asked.
Tamayo nodded. "I know, it's a different dimension that Muzan Kibutsuji controlled in the past."
Aoki said, "I also have a similar dimension, just a bit smaller, but it's still enough to carry some daily necessities. Would you like to take a look, Miss Tamayo?"
Tamayo was somewhat tempted, but still declined. "Let's wait until we get the Blue Spider Lily!"
"Alright!"
Aoki didn't insist, taking out two cups and filling them for both of them.
A peculiar aroma of wine wafted through the air.
Tamayo looked curious. "What kind of wine is this?"
"Champagne, a foreign wine,"
Aoki said. "I specifically asked the head of the Ubuyashiki family to buy it for me."
The Ubuyashiki family had a large business and considerable influence in the secular world.
It's worth mentioning that Aoki also visited the Shinto shrine through the Ubuyashiki clan, hoping to obtain a profession.
When the Ubuyashiki clan was on the verge of extinction, it was the Shinto shrine who gave them advice to form a Demon Slayer Corps, thus preserving their bloodline.
Moreover, this method was indeed effective.
After Muzan Kibutsuji's death, the curse on the Ubuyashiki clan disappeared.
In the original story, Kagaya Ubuyashiki's son, Teruya Ubuyashiki, even became the longest-lived person.
In this timeline, after Muzan Kibutsuji's death, the curse on Kagaya Ubuyashiki disappeared. Although his existing injuries and illnesses didn't heal immediately, they didn't worsen either.
Under the care of Tamayo and Kanae Kocho, his health improved significantly.
According to Tamayo, the changes after the curse disappeared were even more pronounced than she had anticipated. Barring any unforeseen circumstances, Kagaya Ubuyashiki should have no problem living past forty.
Furthermore, the Ubuyashiki family has always married women from the priestly family, and their offspring are less prone to premature death.
All these events suggest that the priestly family and the priest are not simple.
They seem to have some connection to the supernatural.
Besides pursuing a supernatural profession, Aoki also wants to use the priestly family to try and explore whether gods exist in this world.
The priest resolutely refused his request.
It wasn't out of selfishness; in his own words, it wasn't that they could communicate with the gods, but rather that the gods chose them.
Simply put, they cannot decide who can communicate with the gods. Priests are chosen in childhood through a ritual, directly selected by the gods.
Aoki even observed one such selection ritual,
but to no avail.
However, based on his observations, there shouldn't be any gods with self-awareness, but there might be something similar to a universal consciousness.
Unfortunately, he couldn't contact them.
After repeated unsuccessful attempts, he finally gave up.
Time slowly passed, and two days went by in the blink of an eye.
Aoki sat on the sofa, flipping through a medical book, while Tamayo hunched over the table, scribbling and drawing, her notebook filled with numerous modern medical terms.
Although she lived hundreds of years ago, she was neither unfamiliar with nor resistant to new things; in fact, she would actively learn and update her knowledge base.
After finishing a page, Aoki glanced at it subconsciously as he turned the page.
Among the flowers, the few "weeds" had suddenly disappeared, replaced by several vibrant blue flowers, stretching out their beautiful forms.
*Whoosh! *
Aoki jumped to his feet.
"Ms. Tamayo!"
Tamayo reacted immediately, turning her head to look. The vibrant blue flowers came into view, and she exclaimed softly.
"Blue Spider Lily!"
She had seen pictures of it, and had also seen the artificial flowers Aoki made when hunting Muzan Kibutsuji.
They were identical in appearance.
"Finally!"
The two smiled at each other.
"We're lucky."
Ms. Tamayo's eyes shone slightly.
As an excellent doctor, she was naturally interested in unknown medicinal herbs.
And the Blue Spider Lily, as a magical material that could help demons overcome sunlight, had always been one of her most desired research subjects.
Aoki said, "Miss Tamayo, pick some."
Tamayo nodded, got up, and carefully picked a few flowers, placing them in a pre-prepared medicine box.
After collecting the blue spider lilies, the two returned to the laboratory without stopping.
Fortunately, Miss Tamayo had seen the notes about the blue spider lilies left by the doctor who helped Muzan Kibutsuji become a demon.
It was the notes Muzan Kibutsuji showed her when she was under his control, so she could research a medicine to overcome sunlight.
With reference and guidance, Tamayo's progress in making the potion was rapid.
Aoki couldn't help much and might even disturb the hunt, so he returned to Hakui.
Takina and his master's wife were not there, so he sat alone in the courtyard, a thought forming in his mind, and he opened the system.
"The conditions are ripe, it's time to make a decision."
"You can choose any skill for ultimate enhancement!" He hadn't used this reward from "Path of the Demon King."
Enhancing "Demon Blood" would allow him to transform again, and enhancing "Demon Devouring" might break the current awkward situation of not being able to gain experience.
Strengthening "Transparent World" should enhance his perception.
Aoki looked at "Spatial Travel."
He had clearly obtained a stronger class, but he couldn't level up due to a lack of sufficiently strong monsters. His
technological level and extraordinary power were insufficient to explore the essence of power, and so on.
The other three skills were all good, each with its own strengths, but "Spatial Travel" was the only skill that could potentially break through his predicament.
"Come on, system, let me see your strength!"
Aoki didn't hesitate and made his choice directly.
Ultimately strengthen 'Spatial Travel'.
He had hesitated countless times before, but this time, before even opening the system, he had already made his choice.
A cool aura appeared and quickly disappeared within his body, leaving only a message, and…
Aoki raised his left hand, and a silver flower was gradually taking shape, with nine petals, but only one petal was real; the others were illusory.
This was the ultimate strengthened Spatial Travel?
Aoki silently sensed it, his eyes growing brighter and brighter.
Just as he had guessed, even more perfect than he had imagined.
"Spatial Travel" was his Blood Demon Art, rooted in his obsession with travel.
At level 1, he could only teleport within his field of vision.
At level 2, he gained the ability to teleport anywhere in the world.
But it still wasn't true world travel.
Could further enhancements allow him to reach the level of world travel?
This was the only opportunity he could think of to travel between worlds.
He gambled correctly.
After the "Spatial Travel" was enhanced to its limit, the ability he gained was called "World Travel," manifested as the silver flower on the back of his left hand.
Each petal could record the coordinates of a world.
Currently, it had automatically recorded the coordinates of the Demon Slayer world; therefore, only one petal was real, the others were illusory.
The silver flower could also store energy. Once the energy was full, he could use this power to travel between worlds.
There were two forms: one was to travel to the world whose coordinates were recorded in the petal, and the other was to travel randomly based on the connections between worlds.
After traveling between worlds, the energy in the silver flower would be depleted, and he would have to wait for time to slowly recharge.
As for the recharge time,
it was undetermined.
The recharge rate varied depending on the world.
Level 1 was "Spatial Travel," level 2 was "Spatial Coordinate Travel," and level 3 was finally the true "World Travel."
Aoki looked at the silver flower on the back of his hand.
The silver flower was now brimming with energy, meeting the requirements for "world travel."
However, to truly travel, one more thing was needed: finding the extreme point of the world's crystal wall.
According to the information he obtained from "world travel,"
each world was enveloped by a world crystal wall, isolating time and space, severing causality, making it almost impossible to cross.
However, there are always exceptions.
Within the seemingly indestructible world crystal wall, there is actually a void, called the extreme point.
Only at the extreme point can one travel between worlds.
However, the extreme point is very small and changes over time.
Aoki turned his head to look northwest.
Although it wouldn't directly provide the extreme point's coordinates, once the silver flower was fully charged, he could sense its approximate location, greatly reducing the difficulty of finding it.
Currently, the extreme point of the Demon Slayer world was located in the west.
After a moment's thought, Aoki activated "spatial coordinate travel," instantly arriving at a sea of flowers.
He and Ms. Tamayo had just left from here.
"The extreme point really is here, what a coincidence."
Through the silver flower on the back of Aoki's left hand, he could clearly feel that he was standing at the extreme point, ready to activate "World Travel" and leave at any moment.
Yoriichi's wife was buried here, the blue spider lily was here, Tanjiro's family lived nearby, and the extreme point had even appeared here.
This truly was a place favored by fate.
"Everything is ready, except for the final touch."
Aoki looked towards Asakusa.
A week later.
Aoki and Takina were enjoying the cool air in the courtyard.
Suddenly, a strange fluctuation rippled through his mind. Before he could even greet Takina, Aoki vanished.
Takina glanced at him before continuing with her work.
Aoki was in Tamayo's laboratory.
"It actually activated spatial coordinates directly, Tamayo, what happened..."
He stopped mid-sentence.
Tamayo stood before the lab table, on which sat a medicine box covered with a layer of crushed ice, emanating a chilling aura.
On the ice lay ten vials of blue potion.
"Blue Spider Lily?" Aoki asked.
Blue Spider Lily was both the name of the flower and the name of the potion.
Tamayo nodded gently: "This is the Blue Spider Lily, but we can't be sure if it can help demons overcome sunlight."
Aoki said, "Let's test it on a demon."
"No!" Tamayo shook her head: "I'll try it myself!"
"Wait!"
Aoki quickly stopped her: "We don't know if there are any side effects yet, let's find a death row inmate to test it on?"
"Such a precious potion can't be wasted."
Tamayo pursed her lips and smiled: "It's alright, I've studied the production process a thousand times, at most it won't have any effect, there won't be any harm."
With a demon's constitution, as long as they don't die on the spot from poisoning, there's really no need to worry about any aftereffects.
Aoki sighed: "How about letting Yushiro try it?"
Tamayo gave him a reproachful look, rolled up her sleeve, revealing a section of her fair and slender wrist, picked up a syringe, and injected herself without hesitation.
Sizzle!
The blue potion disappeared quickly.
Miss Tamayo's wrist was still fair and smooth, without any change.
Aoki watched her intently. "Ms. Tamayo, how are you feeling?"
"Great!"
Tamayo seemed a little dazed, but quickly regained her composure. "I feel like my body has undergone a transformation."
Aoki glanced at the clock on the wall; the hands were all fixed on the number "12."
It was exactly noon.
"Let's go out and try it!"
Aoki said.
The injection phase was the most dangerous, but the test itself was relatively safe. Even if Ms. Tamayo didn't overcome the sunlight, he could always take her back to safety.
Tamayo nodded readily.
The two hurried outside, not noticing people greeting them.
Reaching the door, Tamayo's hands gripped the door, but she stopped.
Aoki didn't urge her, waiting silently.
After only two seconds of silence, Tamayo suddenly flung open the door.
The scorching midday sun of August shone down, the most terrifying time for demons.
But at this moment, Tamayo felt no fear, only a warm feeling that seeped from her skin to her heart.
Aoki looked at Ms. Tamayo, standing unharmed in the sunlight, and a smile appeared on his face.
Miss Tamayo turned around.
"Congratulations, Miss Tamayo," Aoki said.
Tamayo smiled, "Thanks to Mr. Aoki."
A great experiment had ended just like that, without even a third person witnessing it.
Back in the lab, Aoki took three vials of the Blue Spider Lily potion, leaving the remaining six behind.
Tamayo looked puzzled, "Mr. Aoki, you only need to keep one for Yushiro, the others..."
Aoki interrupted her, "I have a very important matter to ask of you, Miss Tamayo."
Seeing his serious expression, Tamayo said solemnly, "Please speak, Mr. Aoki. As long as I can do it, I will absolutely not refuse."
Aoki took out a vial of blood.
"This is my blood. I entrust it to Miss Tamayo for safekeeping. I hope that in a critical moment, Miss Tamayo can help me turn some people into demons!"
Although his "world travel" ability was very advanced, he was not sure when he would be able to return. This vial of blood was his insurance.
Even if an accident occurred, it wouldn't be that when he returned, his relatives and friends would be nothing but bones in a grave.
A hint of worry appeared on Tamayo's beautiful face: "Mr. Aoki, why didn't you handle this yourself?"
Aoki didn't hide anything: "I'm going on a long trip, and I might not be able to return in time." Tamayo was taken aback.
Mr. Aoki's relatives and friends were generally only in their twenties, with at least several decades left to live.
But he was worried that his relatives and friends wouldn't be able to wait for his return.
What kind of long trip would take several decades?
Aoki said, "I can only entrust this matter to Miss Tamayo."
"I understand."
Although Tamayo was very worried, she still agreed, put away the Blue Spider Lily potion, and said earnestly, "I promise that when Mr. Aoki returns, all your relatives and friends will be alive and well!"
Aoki smiled: "Miss Tamayo, you don't need to feel too much pressure. This is just in case."
Traveling through worlds does have certain dangers, but he had anticipated them and they were still within his tolerance.
Iikura.
In a restaurant.
Mitsuri Kanroji, dressed as a chef, was busy at work. Customers came in an endless stream, and exclamations of praise could be heard from time to time.
At times like these, her enthusiasm would only grow stronger. While
her physical strength couldn't compare to that of a demon, her special constitution, combined with her breathing techniques, made her far more physically capable than most humans.
As dusk approached, after a busy day, Kanroji Mitsuri finally had a moment to relax before closing time. Just then, footsteps sounded.
"Excuse me, sir, today's ingredients… Mr. Aomura!"
Kanroji Mitsuri sat up, a look of delight on her face.
Aomura chuckled, "Looks like business is good!"
Kanroji Mitsuri tossed her hair, her cheeks flushed, "Hehehe, thankfully everyone likes it."
"It must have been tough, right?"
"It was tough, but I was also very happy!"
"Oh, right!"
Kanroji Mitsuri suddenly stood up, rushed off, and returned a moment later with a plate of sakura mochi.
"Mr. Aomura, please try some. These are my special sakura mochi."
Aoki didn't refuse her offer, picked up a piece, and took a bite.
Hmm... still like sand.
Kanroji Mitsuri's expectant expression immediately fell, but before Aoki could comfort her, she regained her energy.
"It's okay. If I fail this time, I'll keep thinking of ways. I'll definitely make food that even demons can eat!"
After closing the shop, the two walked side by side towards Kanroji Mitsuri's house.
Kanroji Mitsuri chattered on about her experience preparing to open the shop, only stopping reluctantly in front of her house.
"Mr. Aomura, please come earlier next time."
"I will!"
Aoki waved, watching Kanroji Mitsuri enter her house, and then disappeared.
Butterfly House.
Kocho Kanae yawned.
Since she stopped hunting demons, she felt she had been living too leisurely, her body had become sluggish, and she had even overslept today.
Stepping out of the house, she immediately saw Kanao engaged in a fierce battle with a young man under the cherry blossom tree named "Victory" in the yard.
A hint of surprise appeared in her eyes, and Kanao quickened her pace, walking over: "Mr. Aoki."
Aoki stopped what he was doing: "Ms. Kanao."
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Kanao opened her eyes wide, her