Transmigrated Become Sukuna, but the host is Yukinoshita Yukino?

"[Domain Expansion: Self-Embodiment of Perfection]"

The giant black hands engulfed everyone. When they regained their senses, the surroundings had turned dark, and they could vaguely see chains formed by arms surrounding them at the center.

In front of them, Mahito stood on a pair of open hands, smiling gently at them.

"Thank you, unknown sorcerer."

Mahito spread his arms toward Hayashizaki, as if he wanted to embrace him.

He lightly clapped his hands together: "Idle Transfiguration..."

Hayashizaki sighed helplessly: "You're asking for death, aren't you?"

Suddenly, Mahito felt a violent, overwhelming spiritual presence. A red light flashed in his eyes, and the scene created by the domain collapsed, replaced by a world built from mountains of corpses and seas of blood.

The sudden change in the scene left Mahito frozen in place.

"To think you've touched my soul... You really have guts, you fool."

A deep, magnetic voice came from above. Mahito looked up in surprise, widening his eyes as he gazed at the man sitting on a throne made of countless bones.

"Where is this!?"

Itadori Yuji snapped out of it, looking up as well at the man on the bone throne. He looked just like him but with an extra pair of eyes and black markings across his face.

"Ryoumen Sukuna!"

Yukinoshita Yukino had been here before, but at that time, the ruler of this bloody world was Hayashizaki, not Ryoumen Sukuna.

"This time, because you brought these people into this, I'll let you go for now."

Ryoumen Sukuna smiled mischievously and then turned his gaze to Hayashizaki, who still looked casually indifferent.

"Well, well, it's you again, my imposter."

After losing to Hayashizaki in the battle at the juvenile detention center, Sukuna had been thinking about the problem with the existence of [Hayashizaki].

Not only was his cursed energy identical to Sukuna's, but even his techniques were the same. Apart from having a different appearance, he was like another version of himself in this world.

However, it was clear that it was impossible for another version of himself to exist in this world. Since Sukuna hadn't left any heirs during his lifetime, the possibility of inherited techniques could be ruled out.

So the only answer was that Hayashizaki had somehow stolen Sukuna's power and techniques, just like he had stolen Fushiguro Megumi's Ten Shadows technique.

He was a true Faker.

"You seem really into this."

Hayashizaki grinned, "You think you're all tough now just because I gave you a finger, right?"

"You might be fine, but your students are all within my attack range."

Sukuna's four eyes flashed with a dangerous light, "Can you guarantee that you can save them all?"

The conversation between the two immediately overloaded Mahito's CPU.

What's going on?

This person's power can rival Ryoumen Sukuna's?

Why is he calling him a fake... So his technique is actually the same slashing technique as Ryoumen Sukuna's?

Questions piled up in Mahito's mind, one after another, but this was no longer a conversation he could intervene in. The pressure and presence emanating from the man sitting high on the skeletal throne were overwhelming.

Under the influence of this aura, Mahito's thoughts seemed frozen, to the point that he could barely even think.

After hearing Ryoumen Sukuna's threat to Hayashizaki, the black-haired girl behind him, who was being protected by Hayashizaki, immediately became worried and gently tugged at his sleeve. "Hayashizaki-kun..."

"It's okay, don't worry."

Noticing Yukinoshita Yukino's concern, Hayashizaki gently reassured her.

Ryoumen Sukuna's threat was indeed effective, since they were standing in his domain. Even though Hayashizaki could fight back by opening his own domain, it would take time. Before that, Sukuna had enough time to kill Yukinoshita Yukino and the others.

Yet despite this, the black-haired young man still wore an unconcerned smile, as if he didn't take Ryoumen Sukuna's threat seriously at all.

The source of his confidence was naturally the system prompt he had already heard in his mind.

[Foreign power detected invading the host's soul, do you wish to erase it?]

That's why he had told Mahito that he was choosing his death carefully when Mahito trapped him inside his domain.

After arriving here and figuring out the system's existence, Hayashizaki had already realized that the system's protection of the host's soul was very strong. Even when he tried to forcefully take over Yukinoshita Yukino's body, he had received a warning from the system.

Although the warning didn't affect him, it was easy to tell how much the system valued the host's soul.

Hayashizaki speculated that the system was likely a being tied to his own soul.

[First, send everyone except the two-faced cursed spirit and Mahito outside.] Hayashizaki instructed.

[Understood.]

Soon, Yukinoshita Yukino and the others suddenly felt a force pushing them away. Before they could react, they opened their eyes to find themselves back in the ruined building they had been in earlier.

"Ah! We're out!"

Itadori Yuji exclaimed.

"What's going on?" 

Yoshino Junpei, who had a higher level of knowledge about jujutsu than Itadori, looked confused. He had been paralyzed with fear when he was dragged into the domain.

In front of them was the domain Mahito had created. From the outside, it looked like a pitch-black barrier, somewhat resembling curtains.

"What do we do? We're out, but Hayashizaki-sensei is still inside!"

Itadori Yuji quickly snapped back to his senses and immediately charged toward Mahito's domain, throwing punch after punch at the boundary, trying to break through it.

"Don't waste your energy, Itadori-kun. It was Hayashizaki-kun who brought us out," Yukinoshita Yukino sighed. "Or do you think he needs us to rescue him?"

If that were true, it would be nice, but the reality was that he had once again saved her...

"Huh? Really?" 

Itadori Yuji blinked, his expression turning a bit awkward. "I guess you're right. I was just too impatient."

"Let's rest for now, and wait for Hayashizaki-kun to come out of there."

The black-haired girl found a relatively clean spot and sat down, closing her eyes to rest.

...

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Meanwhile, on the other side, within Ryoumen Sukuna's domain, the "Malevolent Shrine" a series of white lights suddenly pierced through, and the blood color slowly started to "bleach." The enormous white bones illuminated by the white light also began to slowly dissolve.

"Hmm? What did you do?"

Sukuna immediately frowned. My domain is being slowly eroded?

Did this guy activate his own domain?

No, that's impossible. I didn't even see him make a hand seal.

The white light spread faster and faster, and before long, the entire mental image of the domain disappeared, leaving only a pure white space that disoriented the senses.

Ryoumen Sukuna could no longer sit high on his throne, looking down at the two. He and Mahito turned their heads to look at the smiling Hayashizaki, and then their gaze passed over him, landing on a massive blue glowing orb behind him.

...

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