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Rimuru will not give up! She unleashed the power of her various Armor Skills which she had been building and upgrading all this time, merging them together with the latest Mech Design created by Kireina's Divine Realm engineers and several Totems to boot, the amazing new transformation covered Rimuru's small body with a 200-hundred-meter-big mega mecha! This mecha was stylized into a beautiful metallic golden rainbow luster and it had a faint resemblance to Gundam designs, but stylized into a feminine appearance, with slender limbs and curves on its figure!

The rainbow mech flew towards the gigantic phoenix which was being attacked by Popi's new combined attack, as he shone like a rainbow and slimy sun atop the skies, flashing rainbow stars and firing them towards the embodiment of death and darkness made into a phoenix!

"Nirvana Blades!" Rimuru said, summoning her two trusty blades which she had acquired long ago! The beautiful Nirvana Blade was the first ever legendary weapon she ever acquired, which was gifted to her by nobody else than her beloved Master, Kireina! She had acquired it alongside the weapons of the other girls such as Zehe, Nesiphae, Brontes, and Gaby in the second ever Dungeon they had explored within the Grand Forest, the Water Temple Dungeon! After having defeated the last boss there, the girls each one received their own Legendary Weapon, and Rimuru got herself her Nirvana Blade!

After that, she had also acquired her second iconic blade after the first fight against the invaders from the Athetosea Kingdom, defeating the Champion of Winds (not the hero of winds) netted her the amazing blade of winds, the [Longsword of Unraveling Winds: Óvindandi Vindar]!

Using both of these Blades as her main weapons, Rimuru relentlessly upgraded them over and over again, fusing over many materials and even many other blades into them, but always keeping their names and their original appearances, as it was their powerful and her greatest memory since she began her journey.

These two blades were once more materialized, now upgraded into Supreme God level, they had evolved into completely insane and powerful blades! Nirvana unleashed a tremendous aura of rainbow light, while Óvindandi Vindar unleashed a gigantic aura of rainbow winds!

FLAAAAASSSSHHH!

"W-WHAT?!"

The Necrotic Death Lord was surprised as he saw Rimuru approached him from behind while unleashing her slashing attacks using her two blades!

"Supreme Nirvana Blade Arts: Transcendence of Spirit!"

Suddenly, Rimuru unleashed a truly transcendental attack! Her two bladed slashed through the gigantic phoenix from behind, as tremendous slashes made of rainbow divine supreme aura were unleashed, clashing against the back of the phoenix who was too busy dealing with Popi to react in time!

SLASH! SLASH!

BOOOOMMM!!!

"CRYYYYAAAAHHH…!"

The massive phoenix received a deadly attack, its two wings were sliced apart, falling over the floor!

"GRAAA! Curse you!" roared the Necrotic Death Lord, hating on Rimuru for being so amazingly strong! He raged angrily infusing all the power and soul he could muster into his titan, until it finally began to move again, its powerful beak clashed against Rimuru's mech, as it crushed through her mechanical exterior but protected the soft interior!

CLASH! CLASH! CLASH!

Rimuru clashed against the beak of the phoenix with her blades, the thunderous rainbow lightning clashed against the powerful darkness!

Popi watched the scene and quickly decided to fall and become the meteor himself for a sneak attack behind the phoenix!

"Popi!"

FLAAAAAAAASH!

The massive rainbow slime suddenly clashed against the wingless phoenix from behind, hitting the bird into the ground!

BOOOMMM!!!

"Popi, come!" Rimuru ordered, as Popi flew toward Rimuru and merged with her mechs suddenly turning into a Totem, a Popi Totem! The totem expanded across the entirety of the mech like runic designs, flashing with bright light.

The amazing power of this totem enhanced all of Rimuru's power through the roof, as she gathered all the power within her and fused it together into her blades, unleashing a massive barrage of rainbow slashes against the phoenix, all merged together into a thunderous vortex of rainbow winds and light!

BOOOOOOMMM!!!

The massive attack hit the phoenix head-on as the destructive rainbow light unleashed began to consume the entirety of the Phoenix! The iridescent rainbow light wind danced around beautifully, consuming the death and darkness with utmost ease, and unleashing the true power of Rimuru and Popi! The two supreme slimes completely decimated the phoenix, as the Necrotic Death Lord within it screamed in utter agony, as his entire body was consumed by this power!

"GGRRRYYYYYAAAAAAAAAAAGGGH…!"

BOOOOMMM!!!

The massive skull-face was deleted from existence!

Rimuru and Popi reigned supreme as the darkness around slowly dissipated, the black smoke showing off the clear winner as the people in the Pandemonium cheered for the adorable slime. many of the Archdemon Rankers that were looking at this scene looked at the utter and sheer ridiculousness of the variety of powers that these two slimes possessed.

And the worst part was that it wasn't even their final forms! There was even more power within them if they were to unleash their truest strength against a formidable foe, but sadly, the Necrotic Death Lords were severely weakened at the end, and they became an easy and tasty prey for Kireina and her beloved Rimuru-chan…

Meanwhile, a small floating eyeball made by Kireina transmitted what it saw in the projection within the Pandemonium of Greed into her own Divine Realm. In there, the beautiful original goddess of slimes, Blooia, looked with admiration and inspiration at Rimuru-chan, who was working and doing her best in Hell!

"Wow, Rimuru-chan, you're so amazing, guu!"

"I am here too…" said Rimuru, as she was sitting right next to Blooia.

"Ahaha! I-It's hard to get used to it!" sighed Blooia.

"Well, we cannot completely leave Genesis, but we sent second bodies there." Said Kireina at the side of Rimuru, well, Rimuru was actually sitting over her lap like a spoiled wife.

"Hehe, it has been a lot of fun though! I wonder if the other three Death Titans are going to die soon too, guuu~" giggled Rimuru.

"Let's keep looking, things will get interesting…" said Kireina with a mischievous smile.

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