Epic of Caterpillar

"You might have defeated me before, but now it is utterly futile! No amount of cosmic power or necrotic energy will help you as I\'ve received the divinity of not only my glorious undead lady, but the very ruler of the Netherworld! HE desires your deaths! And I shall bring your souls to HIM!" He laughed. "Now go! [Endless Undeath Legion]! Devour them all!"

"OOOOHHHH!"

"GRAAAHH!!"

"KILL!!"

"FRESH SOULS… DELICIOUS LIFE!"

"BLOOOOOD!"

Millions of Undead condensed into an endless sea of death itself, as it rushed towards Luminous and Frank at the same time. It seemed completely endless and indestructible, and as it expanded more and more, the two realized it shaped as countless hands trying to grasp them.

"Behold the millions of souls I have consumed to attain this power! I have yet to reach a billion, but soon enough it shall become a reality!" Laughed the Necrotic Death Overlord. "I am sure devouring you two might even allow me to rise into a Netherworld Death King!"

"You talk a lot for being a pile of dust." Said Luminous, his eyes flashing with bright golden light. "[Primordial Light Arts]: [Divine Purifying Luminosity]!"

FLAAAAAAASH!

A massive flash of bright divine light emerged from Luminous claws, spreading everywhere around the Domain of Death, and shaking his surroundings. The Undead Legion quickly began to be purified, beginning to turn into dust in mere seconds! The power that Luminous exuded was even stronger than before.

"W-What?!" The Necrotic Death Overlord was naturally shocked by this, he never expected Luminous to have this much power within him! "Y-You…!"

He quickly sensed an even stronger presence emerging from within the very legion of undead, as Frank appeared with a blast of cosmic power, destroying all of the undead easily and making his way towards the Necrotic Death Overlord incredibly quickly.

"You\'re not going to escape now, aren\'t you?"

"Bastard!!!"

The Necrotic Death Overlord roared furiously, while Luminous devastated his endless army of the dead, Frank began swinging his sword against the phantasmal soul countless times, slashing it apart but then seeing it regenerate right back.

FLASH!

"[Black Netherworld Death Sword]!"

The Necrotic Death Overlord furiously materialized a gigantic sword made out of Black Netherworld Metal, swinging it against Frank and attempting to slice him apart just like he did to him!

SLAAAAAASH!

CLAAASH!

Frank managed to catch the attack, but the enormous pressure and the overwhelming power the Necrotic Death Overlord continued to gain while being in this Domain made his attack incredibly powerful.

"[Primordial Light Arts]: [Sunshine Burst]!"

FLAAAAASH!

However, a massive beam of pure sunlight emerged out of Luminous hands, reaching the Necrotic Death Overlord\'s sword and shattering it into pieces!

BOOOOOMMMM!!!

"My sword, shattered into pieces so easily?!" Asked the Necrotic Death Overlord in shock, only for his fury to help him conjure several more of those where they came from! "Drown on them then!!!"

FLASH! FLASH! FLASH! FLASH! FLASH!

Luminous readied himself, infusing his powers into his scales and beginning to intercept each gigantic black sword with his claws, tail, and powerful light beams, shattering them apart as he drew closer to the Necrotic Death Overlord.

Meanwhile, Frank wasn\'t just standing there. He quickly summoned his second weapon, the Heavenly Spear of Light, Mercury, and pointed it at the Necrotic Death Overlord from behind, infusing Cosmic Energy into it.

"[Shining Cosmos]!"

FLAAAAASH!

The spear was suddenly taken over by the pure light of the cosmos, flying down like a ray of thunder towards the gigantic Necrotic Death Overlord and piercing through his body.

BOOOOOOOMMMM…!

"Unnngghh…! T-To a Necrotic Death Overlord, this is nothing!" The Necrotic Death Overlord laughed, employing his own cosmic power, and generating countless stars made of death and darkness, firing them back at Frank. "[Death Starfall]!"

BOOM! BOOM! BOOOM! BOOOOM!

Frank had to quickly defend utilizing barriers of cosmic light and his netherworld essence. The explosions were powerful enough to weaken even his cosmic barriers, this foe might be a bit too strong, perhaps…

However, Frank noticed the Necrotic Death Overlord simply left his own spear stuck on his phantasmal body. And as the seconds passed, the power of Mercury continued growing stronger, spreading across the Necrotic Death Overlord\'s phantasmal soul, and weakening him severely!

"Now, die, die- Agh! Huh?! T-This damn weapon… It still stuck here?! How hasn\'t it fallen into ashes by being exposed to my powerful soul…?!" The Necrotic Death Overlord felt utterly shocked.

"I am not a mere weapon, you know?!" Roared the spear back at the Necrotic Death Overlord with the voice of a bratty young girl. "Name\'s Mercury, and I\'ve been sucking all of your damn cosmic energy! Feeling a bit… lethargic now?!"

"HUH?! A-An Ego Weapon?!" The Necrotic Death Overlord desperately grabbed the spear and threw her away from him, but the damage was already done, an enormous hole on his soul constantly began spreading further, filling his soul with life while consuming his cosmic and necrotic energy and redirecting it to Frank.

"Kireina also granted my second weapon an Ego…" Sighed Frank. "Though it seems it is a bratty girl as annoying as Gram."

"Who are you calling annoying?! I am your damn partner, man! Have some respect for me will you?" Gram asked furiously.

"Oi you two stop talking like idiots, that thing\'s trying to regenerate the damage!" Said Mercury, appearing behind the two.

"I know, let\'s end him." Frank nodded, grasping Mercury\'s handle and imbuing his Divine and Cosmic Energies. "Luminous!"

"On it!" In the other side of the battlefield Luminous stood over a pile of millions of undead turned into ashes, as he channeled his powers, generating a gigantic holy light sword.

Both attacks from Frank and Luminous reached the Necrotic Death Overlord\'s soul wound, piercing through his internal phantasmal soul and then, blowing him up into pieces!

BOOOOOOOMMMMMM!!!