Faced with the system's request, Yosuke felt powerless.
"But… I'm already dead, aren't I?"
"Host, as long as I'm here, life in this world cannot die, and souls cannot reincarnate. So as long as a body that matches your soul can be created, you can be revived. And right now, I am capable of doing that."
"In that case, let's begin!"
Yosuke agreed without hesitation—because he could not bear to part with this beautiful world.
Yosuke's decisiveness moved the system deeply. At this moment, the system seemed to lose a bit of its cold mechanical nature, gaining instead a touch of warmth and humanity.
The system thanked Yosuke.
"I am truly grateful for your continued trust. There are some things—like the fact that the system is actually a materialization of the power of rules—that I've never properly explained. I'm very sorry."
"It's fine. You're the one who saved my life. And since you've always been in my mind, you're also my companion… my family."
Yosuke pulled the system into an embrace as he spoke.
The system embraced him back, its voice trembling slightly.
"Yes, Host!"
In the outside world, Yosuke's soul began to undergo an earth-shaking transformation.
A flame appeared from thin air, burning continuously around Yosuke's soul.
Gradually, the fire dispersed, and Yosuke's soul—tempered in the flames—became almost tangible, shining with a crystal-clear, glass-like radiance.
In the bright sky, countless particles of light appeared, endlessly pouring into Yosuke's luminous soul.
As those endless motes of light flowed into his soul, a skeletal frame formed first, followed by blood vessels… organs… skin… hair.
In just a short time, Yosuke's body was completely rebuilt.
Everyone present held hands, breathless with tension, silently praying, waiting for a miracle.
Kanae and Shinobu, both skilled in medicine, were extremely anxious. They realized that this newly rebuilt body of Yosuke's had no heartbeat, no functioning organs, no flowing blood—nothing but an empty shell.
As time passed, everyone's hopeful anticipation gradually turned into despair.
In the strange inner space, the system spoke to Yosuke:
"Host, your body has been fully reconstructed. This body is now unafraid of sunlight, stripped of all the drawbacks of demons while retaining their strengths. It can be said that it is the closest thing to a perfect vessel!"
"Alright. Thank you, system."
The system's figure merged slowly with Yosuke and said,
"No need to thank me. Please continue to guide me in the days ahead. Now… awaken, Host. Your companions are waiting eagerly for your return."
Outside, the heart in Yosuke's rebuilt body began to beat.
In the silence in which everyone held their breath, that faint heartbeat sounded especially clear.
It was like heavenly music.
The heartbeat grew stronger and stronger. Then the blood began to flow; the organs started functioning… everything gradually returned to normal.
Under everyone's expectant gaze, Yosuke opened his eyes—still wearing that same warm smile.
"Everyone… I'm back!"
Koyuki, Ume, Kanae, and Shinobu could no longer hold back their emotions and burst into tears.
Even Hakuji and Gyutaro—two men who practically never cried—had tears slipping down their cheeks.
"Welcome back, Yōsuke-sama!"
In this battle against Muzan Kibutsuji, humanity had won a complete and overwhelming victory.
The remaining scattered demons around the world all turned to ash with Muzan's death. Such was Muzan—forcing all demons to accompany him in death even as he perished.
No one present could stop this outcome.
In just a short period of time, the only remaining demons in the world were Nezuko—already restored to human form—Kokushibō who had overcome the sun, Tamayo and Yushirō freed from Muzan's control, Hakuji, Gyutaro, Koyuki, and Ume.
Oh, and Chachamaru.
Upon returning to the headquarters of the Demon Slayer Corps, Ubuyashiki Kagaya called for a Hashira' meeting.
"Gambling your lives to fight demons and dedicating yourselves completely… we offer our deepest gratitude."
All surviving members of the Ubuyashiki clan knelt before everyone in thanks.
"Please raise your heads!"
"There's no need for such formality!"
Faced with their leader's bow, all the Hashira were at a loss, overwhelmed by the gesture.
Ubuyashiki Kagaya looked healthier than ever; his once pale complexion now had a hint of color, and the scars on his face were fading. In other words, the curse on the Ubuyashiki bloodline… had been lifted.
"Yōsuke-san has something he wishes to say to you all."
Yosuke stepped forward and expressed his thanks to everyone present.
"Thank you all. Even after my death, none of you gave up on me. You brought me back from the brink of oblivion."
"Yōsuke-san, you're too kind. Compared to what you've done for us, this is nothing."
"That's right. Without you, we probably wouldn't have won this battle."
Yosuke spoke solemnly:
"Although it's not the best time, I must tell you all the bad news."
He turned to Himejima Gyōmei.
"Gyōmei, how does your body feel right now?"
Gyōmei flexed slightly and said,
"I feel good. Very good. Nothing seems wrong."
Yosuke nodded.
"That is the worst part of this bad news."
Michikatsu spoke gravely:
"Yosuke, I understand what you mean. A 27-year-old opening the Mark and surviving… that means…"
"Exactly. Gyōmei, who is past 25, awakened his Mark and yet survived. That means the rule that 'those over 25 who awaken the Mark must die' has been broken—because the Priest Master took the rule of life and escaped to another world. As a result, no living creature in this world can die anymore."
Zenitsu said naively,
"But… isn't that a good thing? Everyone can live happily forever."
Michikatsu warned sternly:
"Zenitsu, if a world loses death entirely, it will lose balance. The end will come—and far darker than the age of demons."
"That's right. That's why I plan to pursue the Priest Master and retrieve the true rule of life."
"Master, you're going to another world? I'll go with you!" Butterfly Shinobu said eagerly.
"No. This time, I'm going alone. Not even Hakuji or the others will accompany me," Yosuke refused with a shake of his head.
Hakuji frowned.
"Why, Yōsuke-sama?"
"That world is unknown to us. It may be extremely dangerous. So I want to scout ahead alone. Once everything is settled, I'll bring all of you over."
Ubuyashiki Kagaya thought for a moment and said,
"In that case, the Demon Slayer Corps will not disband yet. The crisis is not over. We will remain prepared—awaiting Yosuke-san's call to provide support at any time."
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