Another world

(3rd Person POV)

"Domain Expansion! Coffin of the Iron Mountain!"

The voice of Jogo is heard as he unleashes his Domain Expansion. Both Sukuna and Yamamoto are caught by this domain and see the same thing. The environment constructed by this domain resembles the inside of an active volcano. It is a sealed-off stone chamber with large fissures across the walls and the ground that spout large portions of magma. This produces an ambient heat so great that the average jujutsu sorcerer would combust upon entering the domain. However, neither Sukuna nor Yamamoto are average in any way.

"Hm, so this is your domain expansion. Quite fascinating. And the attacks in here are certain to hit as well. How useful, for someone as weak as you."

"I'll kill you for sure ..."

In the next moment, a monstrous amount of magma materialises and shoots towards Yamamoto. It is guaranteed to hit and that's what it does.

*BOOM*

*BOOOM*

*BOOM*

The attacks rain in as Jogo goes nuts on it. Sukuna only observes the exchange with a critical eye. He is unsure of the power Yamamoto possesses and feels like someone who endured all of his attacks and came out unscathed, can't be simple at all.

Jogo seems to have lost his mind as he continues to attack and doesn't stop one moment. But just as it seems like he is about to stop, Yamamoto's voice is heard.

'Normal Series: Normal Slash.'

*Swing*

Everything stops moving. Jogo stops attacking and Sukuna looks at Yamamoto's slowly appearing figure. The magma drips down his body and doesn't even damage his clothes, at least that's what it looks like. Yamamoto is slightly annoyed, as he had to coat his clothes with Haki to protect them from burning up and getting ruffled. Sukuna looks wide-eyed, as a small vertical line appears on Jogo's body, going from the top of his head to the bottom.

In classic anime fashion, Jogo's body splits in two and both halves fall to the ground before disintegrating. The King of Curses looks at this scene with narrowed eyes and his usual arrogance has left the chat for a short moment. It is not the fact that Yamamoto could kill Jogo this way, with just one slash. No, he could do the same. The problem is that he didn't even see the attack as it happened. In terms of speed, the King of Curses prided himself as the strongest and the fastest, not that he necessarily is of course. But seeing a Special Grade Curse like Jogo 'offed like that, makes him hesitate for a second.

"You are strong ..."

"Hm?"

"Who are you? I haven't heard of you until now?"

"Yamamoto Shigekuni."

"Yamamoto? Interesting. Are you a Sorcerer from the past? Or is there another powerful one like you in these times, who can hide his Cursed Energy as well as you do?"

"I don't know what you're talking about. I'm a Shinigami and ... I have come for you boy."

"Ehh? Hahahahaha, come for me?"

"Indeed. Your senseless killings, your disregard for human life and your disgusting soul are all reasons for me to get rid of you, or at least the 15 fingers which make up your current form."

Sukuna narrows his eyes. He has no idea what is going on or where Yamamoto came from, but he does know that he is dangerous as nothing worked up to this point. So he decides to use another attack. He brings his hands together.

"Domain Expansion: Malevolent Shrine!"

The surroundings change again. From Jogo's Domain Expansion: Coffin of the Iron Mountain, Sukuna's domain expansion creates a Buddhist shrine decorated with skulls, where he sits on a throne. But this time he doesn't sit and instead looks at Yamamoto in concentration.

"This is my Domain Expansion. Everything within the domain is relentlessly slashed with either Dismantle or Cleave, depending on its cursed energy level. Malevolent Shrine has a unique trait; it doesn't create a separate space using a barrier and is instead manifested into the surrounding airspace. By allowing an escape route, a binding vow is formed which vastly increases the guaranteed hit's effective area with a maximum radius of nearly 200 meters."

"Hm? You are explaining your technique to me? Fascinating. So you don't actually believe that you will win normally and make your technique more powerful this way, clever. Very well then, let me see your power, boy."

*Shing*

Massive amounts of 'Cleave' and 'Dismantle' are used by the King of Curses to attack and kill Yamamoto. However, the Shinigami doesn't bother all that much. His body is very powerful and there is not really anything in this universe which could kill him or hurt him really. But to show his appreciation, since his adversary also did everything to make his techniques more powerful, he shall show some respect, at least a little bit.

Yamamoto unsheaths Ryūjin Jakka and simply swings his Zanpakuto. 

*Whooosh*

*Cut*

His Zanpakuto slices through the 'Cleave' but does nothing and the attack lands on his body. His clothes are cut apart, speaking of the impressive power of the attack.

"Oh, you cut my clothes a little. You truly are a strong rascal."

Not bothering with the strange 'Shinigami', as Yamamoto introduced himself, Sukuna continued to attack using 'Dismantle' and 'Cleave' in order to set the stage for something else. The surroundings are destroyed as his attacks land on Yamamoto and the surroundings. Meanwhile, our MC is trying to use his limitless potential to cut apart both 'Dismantle' and 'Cleave'. He has limited success, however, which is why this farce is still going on. The reason why he hasn't managed to do it yet is quite simple. Cutting apart 'Dismantle' and 'Cleave', is equivalent to cutting apart Cursed Energy and that is not easy, forcing him to make the fight longer.

*Swing*

*Swoosh*

*BOOOM*

*BOOOOOM*

However, finally, a shift happens in the surroundings, which unnerves the King of Curses. Yamamoto who is in deep concentration, swings his Zanpakuto with impeccable technique. The blade meets the massive 'Cleave' and actually cuts through the attack, destroying it.

...

Sukuna's jaw would drop if he wasn't in a life-and-death situation. His eyes widen in surprise and confusion as this ... shouldn't be possible. Unlike Mahoraga who could adapt to the concept of slashing itself given time, Yamamoto cut through the Cursed Energy and destroyed it. That is ... impossible in his mind. But the strange thing is, that Sukuna can feel Cursed Energy from Yamamoto now. He has no idea what just happened and instead uses another attack.

"Divine Flame! ... Open!"

His left fist has flames coming out between the fingers and as he moves his fist from the top to the bottom, flames begin to dance around him. Sukuna brings both of his hands together and then slowly opens them, revealing the flame inside it.

With special movements, the King of Curses starts to mould and refine the flame and slowly pulls it apart. Yamamoto is surprised as he sees the flame. The heat is impressive, but the special property is what interests him more, it seems to be some sort of divine flame, at least to this universe's standards. Finally, Sukuna is finished and holds a small ball of fire in front of his palms. He dips his fingers into the ball and then pulls his right hand back as if pulling back the bow string. This seems to be correct, since the ball of flames, takes on the shape of an arrow.

Yamamoto smiles lightly and shakes his head. 

"Very well," he says.

Yamamoto returns his Zanpakuto to his sheath and then utters the words no one ever wants to hear.

"Bankai ... Mugen no Tachi!"

The enormously hot temperature inside Sukuna's Domain Expansion suddenly dropped massively. The ground inside this Domain was covered with rather small flames which were colourless but had a special property. Thanks to his fight against Ichibe Hyosube, Yamamoto had another extension to his Zanpakuto which was this one. Sukuna though, saw nothing. He didn't know what was going on until a moment later when he felt his Cursed Energy dropping and at an alarming rate.

Without thinking further, he fired his Divine Flame towards Yamamoto. But he wasn't just taking it, with a wave of his Zanpakuto, massive amounts of invisible flames, clashed with the Divine Flames and started to absorb them. The boundless hunger of Mugen no Tachi started to absorb everything inside the range, Yamamoto set for it, which was exactly the 200 meters of Sukuna's Domain Expansion.

"Stand proud, King of Curses. I recognise you enough to take all you have."

Those are the last words, Sukuna hears before everything turns pitch black.

.

Yamamoto has his eyes closed for a moment. He used 'Mugen no Tachi' in a very special way this time and it used a lot of concentration. Unlike before, he didn't want to absorb all of the body in front of him. He only wanted to absorb Sukuna and not Yuji. Therefore he had to be very specific and concentrate on what he did. But it all worked out. He didn't consume all there was to Sukuna though as there were still 5 fingers left and the residue of his Cursed Energy which was fusing with Yuji. One thing was for certain, Sukuna will never defeat Mahoraga and he will also never defeat Gojo this way. So all in all, things were settled here.

He picked up Yuji who was unconscious right now and made his way back to Shibuya. He landed right where he started and surprised the Sorcerers. The situation has somewhat calmed down after Sukuna and Jogo were both 'removed' from the battlefield. Yamamoto looks in a certain direction where he feels fighting still going on and chooses to go there instead and end things for now. The loss of life and the amount of freshly deceased souls is unbelievable and the disregard for the life of these Sorcerers is infuriating to him. As a Shinigami, he takes this more seriously than others, despite not looking like it.

*Boom*

With a powerful leap, Yamamoto arrives at the fighting area and sees a black-haired teen, who he recognises as Fushiguro Megumi fighting or rather trying to stay alive from his reanimated father, Fushiguro Toji. Megumi thinks about how he has to visualize winning against Toji and summons his Escape Rabbits. The cannon fodder shikigami swarm Toji, but he easily pierces through the escape rabbit shikigami, trying to attack Megumi. Megumi manages to dodge, however, and the fight continues. Megumi runs away and thinks about how he has to end the battle quickly since he doesn't have the energy to last a long fight when he bumps into Yamamoto.

"Ugh ... what? Who are you? Hm? Yuji!! What are you doing with Yuji?" Megumi asked a series of questions.

Yamamoto simply hands Yuji to Megumi and then looks at the reincarnated Fushiguro Toji. The Sorceror Killer shoots towards Yamamoto and swings his weapon with full force. The attack would injure anyone if it were to hit them but does absolutely nothing to Yamamoto. The special-grade cursed tool Playful Cloud pierces Yamamoto's head ... but does nothing.

*BOOOM*

"Oi, you can't just go and poke people," Yamamoto says and slaps Toji in the face.

*SLAP*

*BOOOM*

*SPLASH*

The body of Fushiguro Toji shoots back, hits a giant building and splashes against it, painting it red with blood.

"There ... all done. Now, if you would excuse me, I have places to be and things to do."

A door appears in front of Yamamoto and he steps into it, disappearing from the world and leaving behind a flabbergasted Megumi and a slightly less chaotic situation. After he arrives in his home dimension, Yamamoto sits down and thinks about what he should do now. It was only a short stop in the Jujutsu Kaisen world and he doesn't want to return to Bleach just yet. So to alleviate his boredom and thirst for adventure, he decides to go to another world.

He doesn't need a break at all and just opens the door to another reality. As he steps outside, he appears in a hot volcanic zone which he remembers from the anime and manga.

"Oh, so they did send someone to come for me ... very well, I'll kill you."

"Huh?"

________________________

Guess where he went