-AUTHOR's POV-

As we left off, the three brothers burst outside of Shibuya while sliding on the transfigured worms fro Mahito and to land on the floor and to find out surrounding the floor is nothing but transfigured spirits on the ground, spreading all over and Mahito to appear...

Mahito: Let's kick it up or notch! This will be the last to curse each other!!

The three brothers gave each other a side eye to each other while staying quiet, as Todo claps his hands, swapping Itadori with Mahito as Todo grabs onto Mahito tight for Itadori and (YN) to attack him. Once they were both about to land a hit, Mahito twist his head around and to pop out...

Itadori/(Yn) Mind: He severed himself!?

Then, he grew back a new head, only this time he grew a sort of snail head, and spread his arms long and swing them to try and attack Todo (YN) and Itadori. Mahito's real head started bouncing away and roll and grew little legs and arms and to grew back to its original body back and face towards the brothers...

Mahito: Soul Multiplicity: Polymorphic Soul Isomer!

Itadori Mind: What is that transfigured human?!

The transfigured human started charging towards the brothers to attack...

(YN): Todo!

Todo: On it, brother!

Todo claps to swap places with him to get closer to the transfigured human.

Todo Mind: Given that he's able to hold off me and my brothers, the distribution of power between his bodies are likely 2-8. And the weakened is 2 is the main body! I'll make sure my brothers destroy it!

As Todo helps Itadori fight off Mahito, (YN) goes rushing to the transfigured human...

(YN) Mind: From what I can sense from that transfigured human, it's most likely a grade 3 or a weak grade 2. I'll take it down no problem.

But right when (YN) is about to throw a punch, the transfigured human punches him first, even though the punch didn't even do anything to (YN) at all, still, he felt a tiny impact from its punch.

(YN) Mind: What??

Itadori: (YN)!

Todo: Brother!

Mahito: Pay attention!!

Itadori and Todo were still dodging Mahito away from his transfiguration womb attacks. Back to (YN), the transfigured human again punches (YN), and yet again nothing to him. So (YN) swings a punch to its face, knocking it away and goes after him. Once he arrives to it, he finds it lay on the ground, dead already.

Venom: It's dead??

(YN): I know, right? It's punches had so much power, yet it was defeated by a a single blow?? And the funny thing is, I didn't even put a lot in that punch.

Venom: How weird.

(YN): ...Okay, now I get it. That freak managed to gain explosive power by burning through multiple souls in an instant. It's an extremely offense-oriented transfigured human.

Venom: ...Well, speaking of, we got more company.

(YN) turns and to see three more transfigured humans behind him...(YN) emits venom claws in both hands and to fight them off.
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As (YN) deals with the transfigured humans, Todo and Itadori continue to fight Mahito off, even destroying the transfigured worms trying to surround them. One of them send both Itadori and Todo flying away out of the city as Mahito runs after them...they found them standing up, but to also spot (YN) there already as he stopped for a sec...

(YN): Nice try, I know what you're trying to do, and it won't work at all.

Mahito Mind: Tsk, Itadori and Topknot gorilla weren't a problem at all, but the fact I had to get (YN) far away as possible doesn't work at all. I guess the three polymorphic soul isomers aren't enough. Besides Topknot gorilla, landing a punch to (YN) is a rather deep hurtle. But if I unleash my domain, I'll touch Sukuna and get killed, and also, (YN) will start breaking my domain. But not that, if I even have (YN) in my domain, that curse parasite in him will be a problem too. Barriers are complex. I already revealed the option of excluding him from my domain. The same play won't work for both Itadori and (YN). But...it's a gamble!!!

Itadori: !!!

Mahito: Domain Expansion: Self-Embodiment of Perfection!

Mahito Mind: It's a desperate gamble! On a 0.2 second domain expansion!

Todo and (YN) moves to protect themselves from the domain. So they activate a simple domain, Todo learned it from Yuki Tsukumo, and (YN) during his training in Africa with Yuta. Itadori on the other hand, acted even faster, racing forth to elimate Mahito before he unleashed idle transfiguration. Though, Mahito activated his technique even faster than that. The manifestation of the inmate domain is usually followed by the activation of a technique, but merge those two separate steps into one. It was an act of speed mode possible by his awakens state that follows black flash.
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With Mahito activating his domain, he touched Sukuna and has lead him directly into Itadori's vessel and facing forward Sukuna.

Mahito: So, I take it I'm safe in here, right?

Sukuna:

Mahito: Heh, knowing you, you have some kind of backup plan for Itadori, huh? I won't let you. I'll kill him before you switch back with him. So shut up and watch from here on.

Once Mahito's Domain dissolved, and is back outside, he had his both hands aimed towards Todo for some reason....suddenly, Todo's hand felt weird, and notice his left hand beginning to transfigured.

(YN): Your hand!!

Venom: I got it!

(YN): Venom wait!!

Venom pops out and to quickly chomp Todo's hand with its mouth...

Todo: Nrgh!!! I guess that works too.

(YN): Venom! are you-

(YN) notice Venom began to gag and having trouble swallowing somehow...

(YN): spit it out!

Venom: *nods*

(YN): What do you mean "no?!"

Venom: Sh-Shit!!

Venom then spits out, and yet whatever Mahito did to Todo's hand, it started to shoot out sharp blades all over them, stabbing them and one of them stabbing through (YN)'s eyes...

(YN): Fuck!!

Todo: Shit!!

Itadori: Todo!! (YN)!!

Mahito punches Yuji away, and to throw a curse womb to (YN) and grow into a giant worm and to tackle him and drag him away from Todo as Mahito goes after Todo...

Mahito: Come on, I just made it kore fashionable. Take this! Black Flash!!

Mahito uses Black Flash on Todo, sending him away...but notices it didn't do much impact on him as he was still standing...

Mahito Mind: He just..focused all of his domain cursed energy in his stomach on an instinct when I landed on him. No matter , my technique has recovers and he won't be able to switch spots! I'll kill him for sure!

As Mahito goes after Todo to finish him, Todo's necklace began to rip and to fell off the ground...once it did, the necklace opens, and inside of it, has picture of his fan favorite star girl, Takada, and on the other, a picture of his two brothers....

Mahito: Huh? .....Huh??....Huh????

Todo began to imagine himself with Takada, as the two started "beating" Mahito into a pulp...but in reality, as Mahito got close to Mahito, Todo gives Mahito a clap, meaning he manage to use boogie woogie by clapping his hand, and to swap places with Itadori as Itadori already swing his arm...

Mahito: SHIT-!!

Itadori Mind: Black Flash!!

He lands his black flash on Mahito, sending him flying away and goes after him...back with Todo, he was on the ground, looks at his hand he clap with Mahito, and notices it was burned...

Todo Mind: Heh, it was just for a moment...but I touched him. It's a miracle I got off with this only....

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Back with (YN), the giant transfigured worm was obliterated in one blow by (YN) as (YN) began to use his reverse cursed energy to heal himself up and his sight too, and spots Todo on the ground.

(YN): Todo!

He goes and checks on him...

Venom: Is he okay?!

(YN): Yea, he is, just tired.

Venom: (YN)! Look over there!

They look over towards Itadori and Mahito, and they notice the two fighting, and Mahito has changed into a different form...

(YN): Looks like he's got a new look. I gotta go help Yuji. Todo will be fine here.

Venom: ...*gasps* Wait a minute!

(YN): What??

Venom: When I chomp Todo's hand, I manage to swallow bits of his hand.

(YN): And??

Venom: Since I'm your heart, and yet I'm part of your body now, and if I ate some of Todo's DNA...wouldn't that mean you can use his technique??

(YN): .....!!! No way. That's bullshit.

Venom: It sky sound like its but there's a slight chance it'll work!

(YN): ...You better hope it works.

Venom. I hope so too. Now come on!

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Back with Itadori and Mahito, the Two began fighting each other, dodging their hits as well. Mahito quickly grabs Itaodri's feet and slam him to the ground and about to land a punch to him.

Mahito: Take this!

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Suddenly, a loud clap was heard, as Yuji vanished and (YN) to appear in his position, starring at Mahito.

Mahito: You again?!

(YN) throws a vicious uppercut to Mahito, sending him flying away and reunited with Yuji...

(YN): Itadori, you alright??

Itadori: Yea, I am. Wait! How did..but, Todo..wait what???

(YN): I know, believe me I thought it wouldn't work, guess Venom was right.

Venom: You're welcome.

Itadori: I..I still don't understand.

(YN): I'll tell you about it later. Right now, our main focus is that bastard.

Itadori and (YN) stare at Mahito as he gets up and to chuckle...

Mahito: Like the look?

Itadori: What's the difference?

Mahito: I understood after using Black Flash. What my true soul is.

(YN): Wow, how shocking to hear.

Itadori: Doesn't make a difference. You didn't even strike me as the type to go on a journey of sled discovery.

(YN): No kidding.

Mahito: Heheh, that's true. But I'm just starting on the final touches. After I kill you two, I'll finally be born in this world.

(YN)/Itaodri: ....

With that said, Mahito began approaching to the two of them as both Yuji and (YN) both approach to Mahito, and began cracking their knuckles to begin their final fight against him.

(YN): Ready, Yuji?

Itaodri: Yeah!

(YN): Good, let's end him!

-END OF CHAPTER 22-