A/N:- I will add a few images in paragraph comments to make it easier to visualize some objects.

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"Shadow clone Jutsu"

Izuna creates ten shadow clones to fight against Urashiki's puppet.

"You underestimate me! Even Kyubi with his hundred clones was no match for my puppets." Urashiki mocks Izuna.

"NO! It's not the quantity that matters, but the quality. Since it is going to be my first all-out battle with my Rinnegan, I won't hold back."

Izuna grabs the blade in his mouth and makes some hand signs.

"Power Release: Asura's cloak"

Swoosh…

A dark red cloak appears around his body. Purple lightning flickers through his eyes as he wields his blade.

"Sasuke! A ninja is all about speed. Show me how much progress have you made in that regard!"

"Hah… you took the words out of my mouth, Nii-san! I was waiting for this moment for so long."

Sasuke takes a sword stance.

"Amaterasu!"

He coats his blade with black flames and purple lightning flickers through his body.

Urashiki takes out some pills from his gourd and consumes them. His complexion changed slightly and a giant horn grows in the center of his forehead.

Whoosh…

Izuna and Sasuke disappear from their position, turning into a bolt of red and purple lightning.

Haah…

Urashiki activates his tomoe-less purple Rinnegan. He extends his arms and aims them towards the duo.

Swish… swish… swish…

Urashiki rapidly fires a barrage of black chakra receivers from his arms.

Clang… clang…

Izuna and Sasuke deflect the attack and close the distance.

"I am not done yet!"

'Tool Creation Technique'

Urashiki claps his hand and creates a multitude of tools like axes, blades, hammers, chains, shields, and scythes.

Haah…

He wields his fishing rod and the rest of the weapons floats behind him in a Chakram formation.

'Amenosubaruboshinomikoto'

He swings the fishing rod to launch a barrage of fishing hooks.

Haah…

Izuna intercepts the barrage with an attack of his own. He swings the cyan blade and launches a barrage of cyan vacuum blades.

Bang… bang…

The cyan vacuum blades slash through the fishing hooks and land on Urashiki.

Urashiki summons a giant red shield to block the attack.

"Amenotejikara"

Sasuke uses the ability of his left eye to switch positions with one of Urashiki's blades.

Shiing…

Urashiki's eyes turn blue. He wields a chain with his left hand and wraps it around Sasuke tightly locking him in his grasp.

"Now I got you. Friend of Kyubi!"

Heh…

Sasuke smirks at him.

Shoom…

He disappears from his place and appears in front of Urashiki as Izuna replaces him with own jutsu.

"Amenotejikara"

Izuna copies Sasuke's Rinnegan ability. He slashes his blade towards Urashiki, shattering the chain and the shield in the process.

Bang…

Urashiki slams in the ground, creating a giant crater.

Ugh…

He pukes out a mouthful of blood.

Argh…

"Damn you insects! How dare you lay your filthy hands on me?

He controls the gravitational field and lifts a giant piece of land.

Haah…

He hurls it towards the Uchiha duo.

"Susanoo"

Sasuke summons his Susanoo and swings the blade to slice through the boulder.

BOOM…

His blade cleaves the boulder in half and lands on Urashiki.

Crack… crack…

Cracks appear on the blade as it shatters and disperses.

Urashiki has a glowing white blade in his hand which he drew from one of his puppets.

Whoosh…

Izuna appears behind Urashiki and performs a lateral kick.

Swoosh…

Urashiki ducks down and dodges the kick. Izuna smirks and mutters.

'Frog Kata'

BOOM…

Urashiki is sent flying by the invisible blow of the Nature energy.

BANG…

Urashiki slams into the barrier. Red lightning flickers through his body as he slides down. The horn in the middle of his forehead cracks and separates from his body.

"Since you don't want me to lay hands on you then would leg work?" Izuna unites with Sasuke.

Ahahaha… Haha… Muhaha…

Large amounts of chakra surges in Urashiki's body.

"I WILL KILL YOU! I WILL EXTERMINATE YOU INSECTS!"

Urashiki's hysterical cries echoes in their ears.

He stands upright and clasps his hands together.

Shoom… Fwoosh… Fwoosh…

The Otsutsuki puppets stop momentarily and the Otsutsuki symbol on their forehead glows brightly.

Bang… Bang… Bang…

The puppets fly towards each other and fuse together to form a gigantic humanoid construct.

Haah…

Urashiki stretches his arms and a giant opening appears in the center of the puppet.

Whoosh…

He encases his body within his puppet.

SHOOM…

The puppets charge a dense purple chakra beam and aim it at Izuna and Sasuke.

"Nii-san, beware! This attack can penetrate through all sorts of defense and even nullify regeneration."

"SUSANOO"

Izuna creates a full-body Susanoo. The Susanoo spreads its arm and a gigantic black shield appears in its left hand.

"Let's see which is more powerful, my shield or your spear!"

Swoosh…

He infuses his Susanoo with Nature energy and adds another layer of protection.

Shoom… Shoom…

Cyan scales form on the Susanoo and a green vertical eye opens in the center of the black shield. Flame motifs surround the eye, making it more imposing.

BAM…

Izuna slams the gigantic shield on the ground and places it in front of the chakra beam.

Fwoosh…

The chakra beam slams into the shield. The eye in the center of the shield glows brightly and disperses the energy of the attack.

The right hand of the Susanoo wields a katana and slashes it towards the gigantic puppet.

Clank…

The puppet draws its white blade and blocks his attack.

Crack… crack…

Izuna's katana shatters into fragments and disperses.

Tch…

Izuna clicks his tongue.

"These Otsutsuki energy weapons are a problem."

The Susanoo's shield continues to degrade under the energy beam.

"I have to do something."

Izuna stretches his arm and five malleable purple orbs with dense chakra appear in his palm.

"Shinra Banshō"

He shapes the orb into a giant purple katana and swings it around.

Clang… clang…

The purple katana deflects the puppet's weapons without any scratch.

'Even with my chakra reserves, I have used up a lot of chakra in this battle. This is my first time in a while to be so low on chakra.'

The Susanoo dashes towards the giant puppet and bashes its chest with its shield.

Crack… crack…

The chakra cannon on its chest shatters.

"Sasuke, how long will it take for you to find it?"

Izuna asks Sasuke.

"Just a little more!"

Sasuke is dodging the relentless attacks of the puppet as he scales its surface.

Haah…

Izuna grabs the puppet and tries to lift it up in an attempt to throw it.

Swoosh… Swoosh…

A pair of additional arms appear from the mechanism of the puppet.

Izuna dispels his shield and locks arm with the puppet. Both sides are in a stalemate as they continue to push each other.

"Amaterasu: Flame Wrapping Fire"

Izuna wraps his Susanoo with black fire to gain an advantage.

Kacha…

The puppet opens its giant mouth and sucks the surrounding fire.

"What?! It can even absorb a jutsu!"

Kacha… Kacha…

Two additional pairs of arms sprout from the puppet's chest. The arms wield white energy blades.

Swoosh…

It swings the blade in an attempt to slice through Izuna's Susanoo.

HAAH…

Izuna's Susanoo kicks the legs of the puppet and jumps back.

Shoom…

The eyes of the puppet glow brightly, and it charges another powerful blast. Izuna summons his shield to block the attack.

"Found it!"

Sasuke covers his Kusanagi blade with Amatersau.

Stab…

"Blaze Release: Honoikazuchi"

He impales the weak point of the puppet with his blade.

Srrr…

The Amaterasu shapes into numerous spikes and pierces through the joints of the puppet.

Shoom…

The puppet glows brightly as Sasuke destroys its energy core.

Whoosh…

Sasuke jumps back and lands beside Izuna.

BOOM…

The giant puppet explodes into pieces, leaving shards of dismantled small puppets.

Swoosh…

A shadow flickers out of the remains of the puppet.

"I have been waiting for you to show up!"

Whoosh…

Izuna appears behind the figure.

Stab…

He impales Urashiki's heart.

Bleurgh…

Urashiki pukes out a mouthful of blood as he stares at Izuna with shock.

Swish…

Izuna draws his blade and stabs him again.

"These Otsutsuki have cockroach-like survivability. I want to ensure he dies for real."

FWOOSH… SHOOM…

Enormous amounts of chakra surges through Urashiki's body as he releases a powerful shock wave, pushing Izuna behind.

Crack… Crack…

Cracks appear on the barrier isolating the group.

"Nii-san, beware! He is going to undergo his final transformation!"

Sasuke warns Izuna as he raises his guard.

"What?! Is he a relative of a certain white space-lizard?"

Izuna warily stares at Urashiki.

"Ahaha… Haha… Now you monkeys have gone and done it. I have to say you monkeys possess some level of skill for this desolate dimension. No wonder Momoshiki and Kinshiki lost to you. However, I am different!"

Urashiki's body turns upright as dark clouds loom over the place.

He plucks out his eyes and swallows them.

"Ahaha… haha…"

SHOOM… SHOOM…

He releases a powerful gust of chakra.

Crack… crack…

The isolation barrier cracks from the powerful shock waves as Urashiki undergoes his transformation.

Meanwhile, Izuna is closely studying his body.

'He is releasing such powerful chakra without destroying his body. Also, I can feel that his Rinnegan has evolved. It's almost as powerful as my Rinne-Sharingan. How is he doing it?

If I can figure it out, I might be able to solve the issue with my body.'