Epic of Caterpillar

From within the neighboring Spirit Sky Island, a mass of colorful crystals constantly grew, almost as if they were cancerous tumors that never stopped growing and multiplying across the entire floating piece of land.

The Spirit Sky Islands did not have such a name for nothing, although this one was not as big as the Realm of Niflheim, it was big enough to harbor whole countries inside, and many ecosystems.

However, if anybody were to travel across certain areas of the Spiritual Plane, a pattern would be noticed. The islands that floated in the endless Sea of Clouds, which usually harbored rich live within them would begin becoming more and more empty, deserted, and devoid of most life.

This was because to advance their cultivation further, Spirit Masters who harbored strong Spirit Hearts would absorb the spiritual energies of Spirit Sky Islands, who were living beings of their own, negatively impacting the ecosystem of this vast Plane.

Usually such a thing would really affect things in the great scheme of things, as the Spirit Sky Islands would slowly crumble into Spirit Dust and then merge with the Sea of Clouds, only for the endless gravitational forces to combine the ashes of many to recreate yet another new Spirit Sky Island through the enormous quantities of Spiritual Energy in the atmosphere.

However, things were changing now, as the Spiritual Plane was slowly beginning to decay due to its collapsing Pillars after the Spiritual Yggdrasil Tree within the Plane's Core were to begin withering, such process started taking longer and longer to happen.

Which made many of the lands of this Plane end up deserted and withered… However, even the still living, withered Spirit Sky Island was a precious resource, as they were living beings of their own, qualified as silent and peaceful Spirit Beasts who simply roamed the skies and absorbed spiritual energy from the environment, once the mass of spirit crystals emerged, it was instantly absorbed into the entity that the malefic Wasp-like woman left behind.

Withered and tired, the Spirit Sky Island was incapable of fighting back against this parasitic mass of spiritual crystals, its core was infected and assimilate, as its surface and everything else started to shapeshift rapidly!

"GRUOOOHHHH…!"

A mighty draconic roar echoed from the entire Sky Island, thousands of kilometers huge, not as huge as what the monstrosity that the Necrotic Ruler had become by turning Helheim as his vessel, but big enough to be almost unfathomable!

A gigantic turtle-like head emerged from its front, piercing through the hard rock and ores, and opening its rainbow, blazing eyes.

Four enormous arms emerged from the other areas of the island, made of incredibly condensed rainbow-colored spiritual crystals, with gigantic, sharp claws, each one being kilometers big!

Using its innate ability to float in midair, the monstrous aberration quickly started to fly into the skies, slowly beginning to move towards the Realm of Niflheim…

It was already quite obvious, but its goal was to destroy the entire Realm and everyone in it! Due to its sheer size, if it were to collide at full force, the realm would not be able to resist the shockwave and crumble into pieces.

And as its draconic roar echoed across the skies of the Spiritual Plane, Kireina started to prepare herself to battle that monster, holding her scythe tightly as the Insectoid Swarm had finally reseeded, but now she had an army of Spiritual Beast Undead amounting over twenty thousand, with a few other thousand Skeletons and Zombies she had summoned normally.

"Looks like we can't even take a break." Kireina sighed. "Can you guys move? Are you alright?"

"Ugh… I'm exhausted, master…"

"W-We apologize for being so useless… We were caught by that damned insect woman."

"Did she turn us into some sort of beast? My head's all spinning around…"

"Geeehh…"

They weren't in their best, that was for sure. However, Kireina also sensed something within them, a spiritual energy flowing across their bodies. It seemed they ended inheriting a bit of the power of the monster they had become.

"I guess you guys need a bit of healing first." Aldrich suddenly appeared above them. "How about this? [Undead Reconstruction]!"

FLAAAASH!

The ancient Elder Lich conjured a mighty spell of Death and Phantom Attribute capable of healing Undead, which it quickly did at an astonishingly fast speed. The four Undead Generals felt much stronger and revitalized!

"Oh, what's this? I feel so much better now! Thank you big bro!" Katara floated towards Aldrich and started eyeing him with her huge red eye. "You're so handsome! Who are you?"

"Gehehe… He's really my type." Futima lifted herself off the ground using her long hair, glancing at the handsome Aldrich. "Who are you?"

"Huh? Could you give me a bit of personal space…" Aldrich sighed. "My name is Aldrich, young Undead. And I am the greatest necromancer to have ever existed!"

"Kireina-sama, did you summoned this guy?" Duruno asked, carrying his head.

"I don't like his attitude… though I am grateful he healed us." Gufumin sighed.

"Y-Yeah, he's… well, it's a long story, but yeah, he's a Summon." Kireina laughed.

She never thought these two groups of completely different people would be interacting in such a way, especially because Aldrich as a whole seemed like the protagonist of his own story while these four goofball Undead seemed straight out of some gag manga.

Aldrich was too serious while they were too playful, it was as if they were from two different genres altogether… but it was funny to see, even in this perilous moment.

"Well, thank you for healing them, Aldrich, get along well with them, I'll assign you as part of their group from now on." Kireina laughed. "I hope you can tolerate their hijinks, they're quite a competent team, even more when they got their mechs available. Thankfully, Charlotte has finished mass producing the latest model, so, are you guys up for fighting at our side?"

"Sure thing, I want to take revenge on that damned insect woman…" Katara said hatefully.

"She's gone though, no? I can't sense her disgusting presence anymore." Sighed Duruno.

"Wait, what?! She ran away and left that huge titan thing?!" Futima was pissed off.

"We can tell Kireina-sama more about her once we're done here, I guess." Gufumin smiled. "For now, Undead Team, let's do this!"

Four enormous mechanical armors were summoned by Kireina's command, flying towards them!