Whoosh!
Silently, the person was gone.
Muzan Kibutsuji felt an immense sense of crisis throughout his body. The hairs on his skin stood on end.
A blue figure made his pupils constrict to pinpricks. Without time to speak, he directly used his cells to notify the three Upper Moons to block and quickly communicated with Nakime.
From Seiichi's perspective, the world seemed to freeze, everything transparent. He saw Akaza slowly extend his fists, attempting to block, but when they were still two fingers' distance from the blade, the fists instantly turned to dust, vanishing. Even his two arms instantaneously became nothingness.
Ignoring him, Seiichi disregarded Akaza and continued forward.
Doma's physical strength was inferior to the other two, but his reaction speed was not slow. Tiny ice crystals quickly covered his entire body. However, it was useless. The blade smoothly sliced through the ice, passing through his entire waist, separating his upper and lower body. Doma was cut in half at the waist!
Kokushibo, who had already prepared Moon Breathing, looked at the blade that had pierced through Doma's waist and immediately unleashed his Blood Demon Art. Blades sprouted all over his body, and a large number of blades simultaneously blocked the attack.
Swish! All the blades shattered, and the entire right half of Kokushibo's body charred into dust, leaving only half of his body standing.
This was all secondary. The true power of this move would only unleash at the target.
If I take this blow! I will die!
Muzan Kibutsuji screamed frantically in his heart!
"Nakime!!!!"
A crisp sound of a biwa rang out, and a window appeared beneath everyone's feet.
Stepping into the void, Muzan's position instantly became very distant! Seiichi's attack could no longer continue forward.
"As expected, it's still too late. Then, we execute Plan B."
Seiichi turned and rapidly descended. The blue flames on his Nichirin Sword had not yet extinguished, forming a comet-like tail flame in the air. Around him, the pavilions of the Infinity Castle shifted, and countless demons poked their heads out to watch this shooting star.
With another sound of the biwa, windows appeared beneath the feet of countless Demon Slayer Corps swordsmen, and Nakime brought all the Demon Slayer Corps swordsmen into the Infinity Castle!
Tanjiro Kamado fell through the air, looking at Muzan Kibutsuji, who was firmly controlled by Tamayo, and at his terrified face. He roared in anger.
"I will definitely kill you! Muzan Kibutsuji!!"
Muzan Kibutsuji, who had narrowly escaped death, was now seething with rage, gritting his teeth and retorting.
"Come if you dare! Tanjiro Kamado!"
In the air of the Infinity Castle, Demon Slayer Corps swordsmen in black uniforms fell like rain, heading to unknown areas. Kasugai Crows carrying concealment runes flew into the Infinity Castle. Everything was proceeding according to plan.
Rewind to several days ago.
Seiichi and Stone Hashira Himejima sat beside Ubuyashiki Kagaya, while Ubuyashiki Amane and Kiriya Ubuyashiki also sat by his side.
"I have a premonition that Muzan Kibutsuji will definitely come. I want to use myself as bait, cough, cough."
"I want to consult your opinions."
Seiichi remained silent for a while, not speaking. Himejima wept incessantly.
They all knew that a person like Ubuyashiki Kagaya, once he made a decision, would not be persuaded otherwise.
"I think we can inform all our comrades about this matter."
Seiichi stated his suggestion.
"The children will not agree, cough, cough."
"If you insist, they will agree. After all, they respect you the most. Enduring humiliation, their anger will only intensify."
"This... You are right, Seiichi-kun. They have grown up."
After some hesitation, Ubuyashiki Kagaya still sent out a Kasugai Crow, summoning everyone who had participated in Seiichi's special training.
Soon after, everyone arrived. Himejima conveyed the Master's wishes, immediately sparking strong opposition. Under Ubuyashiki's insistence, everyone could only quiet down and reluctantly agreed to the proposal.
They knew that the most important thing was to exterminate Muzan Kibutsuji. All sacrifices would transform into the flame in their hearts.
"After Himejima-sensei's attack is ineffective, at that time, please do not make a move. I will attack."
"Because if even my attack is also ineffective, then concealing everyone's strength will give us an initiative."
Seiichi laid out the specific plan for what would happen next.
"I will have someone impersonate me leaving the Demon Slayer Corps Headquarters. Muzan Kibutsuji will not dare to come if he doesn't see me leave the Demon Slayer Corps Headquarters. I have already asked the Swordsmith Village to forge Nichirin Sword models identical to mine and had Cuckoo follow the swordsman impersonating me."
"The most important thing is the contact method. Assuming the space that Sanemi and Obanai saw is indeed Muzan's lair, and a situation where everyone is scattered occurs, Kasugai Crows covered with concealment talismans will quickly follow you. The people at the Headquarters need to quickly create maps and directions."
"For the concealment talismans, I'll leave them to you, Yushiro. For the map-making, please put in more effort, everyone from the Kakushi."
Seiichi looked towards Tamayo and Yushiro in the corner. Yushiro shivered and replied with a "Yes."
This person has such strong oppressive power!
"Tamayo-san, for the task of restraining Muzan, please take care. We will rescue you as soon as possible."
"It's fine. As long as Muzan Kibutsuji dies, what if I perish with him?"
Tamayo's resolute words made Yushiro's face anxious. But he understood that Tamayo's conviction was incredibly firm.
The Demon Slayer Corps members were already accustomed to good demons. After all, with Nezuko before, Tamayo and the others were easier to accept.
"As for the person to oversee and command from the Headquarters..."
Seiichi looked at Ubuyashiki Kagaya.
Ubuyashiki Kagaya extended his hand, and Kiriya Ubuyashiki quickly took it.
"Kiriya, you will have a hard time from now on. Your older and younger sisters will guide you."
Tears welled in the handsome boy's eyes, and he nodded heavily.
"Everyone, the Demon Slayer Corps' millennium-long hope, whether it can be realized, depends on all of you."
There was a flickering fire in everyone's eyes.
In the Infinity Castle.
Without surprise, everyone controlled their descending figures, looking up at Muzan Kibutsuji in the sky, killing intent pervading.
Several portals opened, and Nakime distributed different people to different locations, hoping that the Upper Moons and Lower Moons would completely slay them. Her most troublesome situation now was where to teleport Seiichi.
Nakime's teleportation was not unlimited. Her teleportation in the Infinity Castle required the consumption of power. Depending on the size of the target, the consumption for teleporting different people varied.
For a person like Seiichi, in her perception, he was like an abyss, impossible to look directly at. Opening a spatial passage to draw him in had already consumed a considerable amount of her power.
If she were to teleport him again, she would likely be drained. At that time, she couldn't guarantee that she could defeat the Hashira assigned to her.
After much thought, Nakime decided not to teleport, but instead to let Seiichi wander within the Infinity Castle. After all, the Infinity Castle's terrain was complex, like a maze without a map.
With each sound of the biwa, everyone was swallowed into a portal.
Nakime miscalculated many things, but the biggest problem was that she didn't restrict Seiichi!
Seiichi, constantly falling, observed his surroundings, then used an invisible leverage to leap onto a platform. His hands didn't stop, even catching several Demon Slayer Corps swordsmen.
It seems Nakime won't teleport me.
After a moment of contemplation, under the admiring gazes of the swordsmen, he said lightly.
"Let's go, we're going to kill Muzan Kibutsuji!"
The Infinity Castle battle begins now!