The Demon Slayer World.
All across the world, people gazed up at the sky with a tumultuous mix of emotions: excitement, fervor, fear, awe, hope, and yearning. Every emotion humanity was capable of feeling seemed to surge together.
In the sky, a vision appeared—something that could only exist in myth and legend. It was a reflection of another world, as if an inverted realm had manifested above them.
The skies of the entire world mirrored the landscapes of Teyvat, revealing scenes from every corner of this otherworldly land.
In the Asian continent, people saw the bustling harbor of Liyue, the grand inn perched on a massive divine tree, the Qianyan Army battling monsters in the forests, the mages wielding magical arts, and the Vision bearers channeling their elemental powers.
"Is that the mythical Thirty-Three Heavens?"
"Immortals have descended!"
"Immortals, protect us!"
In the nations of Europe, they saw projections of Fontaine and Mondstadt. The alabaster city of Fontaine, resembling the mythical Avalon of Arthurian lore, inspired cries of admiration among those who revered King Arthur.
In the lands of the Tigris and Euphrates, the Indus Valley, and the Nile River, they beheld visions of Sumeru. They shouted the names of their gods in fervent worship, believing they had seen manifestations of their deities.
In particular, the people of the Nile River basin marveled at the colossal pyramids of Sumeru's desert. When the pyramids emitted radiant divine light, they cried out in reverence to Amun.
Meanwhile, in the skies over island nations, they saw Inazuma's Narukami Island. The grand Narukami Shrine positioned on its highest mountain, the radiant statues scattered across the islands, and faint glimpses of the people going about their lives in Inazuma City all appeared in their heavens.
"Takamagahara! It's Takamagahara! In my lifetime, I've seen Takamagahara!" Priests and shrine maidens from various shrines gazed in rapture at the projection of the so-called "Plane of High Heaven," offering prayers of joy and devotion.
By this time, the Demon Slayer Corps had disbanded, its purpose fulfilled after the eradication of Muzan Kibutsuji.
Each member of the Corps had returned to the lives they were meant to lead.
The Kocho sisters had opened a medical clinic in Tokyo, and as they were seen by the public as "immortals," countless people flocked to them for treatment.
Looking up at the projection in the sky, Shinobu Kocho murmured with excitement, "Is that Takamagahara? It looks exactly like the myths and legends. Do you think we'll ever have the chance to visit it?"
Kanae Kocho gently patted Shinobu's head and said with a warm smile, "The gate to Takamagahara is right there at the Narukami Shrine. If we do good deeds and live well, perhaps Lady Fox Spirit will allow us to go there one day."
Sanemi Shinazugawa, the Wind Hashira, had stayed behind at the request of the Ubuyashiki family to help stabilize the temporary government.
Sanemi stared at the Vision hanging from his waist, lost in thought.
He had never expected to receive a Vision, but he had his own aspirations: to build a better nation, one free of corruption and decadence, and to help Lord Ubuyashiki establish a brighter future for their country.
And then, during an ordinary bath, this Vision had appeared, floating in his tub.
Returning to the present, Kagaya Ubuyashiki broke Sanemi's thoughts. Looking at the Vision on Sanemi's waist, Kagaya smiled gently. "Sanemi, are you still thinking about how to apologize to Genya?"
Sanemi turned to look at Kagaya, who also wore a Vision at his waist. "No… I was just wondering. I don't have the kind of grand ambitions that you do, Oyakata-sama. Why would the gods recognize me with this gift?"
"Good child," Kagaya said with a serene smile. "No matter how small or large a wish may seem, if it is sincere and good, then the gods will recognize it as such. The Vision you've received is their affirmation of your worth."
"… I understand." Sanemi nodded solemnly, gripping the Vision in his hand with new resolve.
Meanwhile, Giyu Tomioka, the Water Hashira, was in the mountains with his master, Sakonji Urokodaki, tending to the memorial plaques of the many disciples who had fallen during the final selection exam.
As Giyu wiped a plaque clean, his eyes flicked briefly to the projection in the sky. With a quiet shake of his head, he returned to his task, the Vision at his waist casually left sitting on the table nearby.
In a temple in Tokyo, Gyomei Himejima, the Stone Hashira, was busy helping a group of children who had lost their parents during the chaos in the city. Together, they were rebuilding the temple, carrying wooden beams and repairing its dilapidated structure.
With the power of his Vision, the construction progressed quickly. Gyomei even found time to playfully tease the children, filling the air with their bright laughter.
As he gazed at the sky, Gyomei clasped his hands in prayer.
"Thank you, Divine Lord. Children are the future. To protect and guide them is to safeguard that future. I will carry out my wish to its fullest."
Elsewhere, Mitsuri Kanroji had just finished declaring loudly, "I will definitely find a husband who doesn't reject me!" when she noticed the Vision in her hand.
"I've been blessed by the Divine Lord!"
Her face flushed bright red as she stammered, "My only wish was to find a husband! Even such a simple wish could be blessed… Ahhh!"
Overwhelmed with embarrassment, Mitsuri covered her face with her hands.
"Or… does this mean the Divine Lord wants me to become a shrine maiden?"
"No, no, I can't think like that! How could I make random assumptions about the will of the Divine Lord? Besides, Lady Narukami is a goddess!"
Clenching her fists with new determination, Mitsuri exclaimed, "I've decided! If I can't get married, I'll become a shrine maiden and serve the Divine Lord!"
Full of resolve, she turned and sprinted toward Narukami Shrine.
Obanai Iguro, the Serpent Hashira, was now studying legal texts at the suggestion of Kagaya Ubuyashiki, preparing to become a judge.
Although demons had been eradicated, the "demons" in people's hearts were endless. Obanai wished to bring justice to these "demons" through the rule of law.
When he opened a thick book of legal statutes, he found a Vision tucked between its pages.
In a birch forest, the Tokito brothers, Muichiro and Yuichiro, were arguing as they gathered firewood and herbs to sustain their daily lives.
Their heated squabble was interrupted when two Visions dropped from the sky and struck them on their heads.
At the Rengoku residence, Shinjuro Rengoku was scolding his son, Kyojuro Rengoku, in frustration.
"You little brat! There aren't any demons left. Why are you still practicing swordsmanship? You'd be better off throwing that sword away and becoming a merchant! What, do you think you can make a living with your sword skills?"
However, when Kyojuro replied with the words his mother had once told him—"Mother said I was born a strong person, so my duty is to protect the weak. Even if there are no demons, my strength should still be used to shield the weak from harm"—a Vision descended from the sky, stunning Shinjuro into silence.
Meanwhile, Tanjuro Kamado and his son, Tanjiro Kamado, carried bundles of charcoal on their backs, delivering it to each household in a small town.
Though Tanjiro had received a Vision, he did not display it publicly. Following his father's teachings, he believed in living humbly—boasting or showing off was a form of arrogance.
At this moment, in the Quantum Sea, a vast blue planet was orbiting a massive world bubble, much like a moon revolving around a planet.
In comparison to the enormous world bubble, the blue planet appeared small, resembling a satellite world.
The sky of the blue planet had transformed, now mirroring the world barrier of Teyvat. Its sun, moon, and stars were no longer its own but instead projections originating from Teyvat itself.
In this moment, the blue planet was fully integrated as a satellite world of Teyvat.
Within its mantle, the unique Ley Line structures of Teyvat had begun to take root, slowly but surely.
Celestia
Seated on the Throne of Heavenly Principles, Noah raised his hand. A projection resembling a planetary globe appeared in his palm.
A system notification echoed in his mind:
[Ding! The Demon Slayer World has been fully assimilated. Please verify, Host.]
Noah stared at the rotating projection in his hand—a visualization of the now-integrated worlds.
The Quantum Sea swirled in the background, but the blue planet spun peacefully within the massive world bubble of Teyvat, like a star secured in its destined orbit.
Teyvat had grown stronger, and so had the future of its people.
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