Once more, the chosen kings of the World of Chikyuu were facing off an attack by the sworn enemies of their 5 kingdoms, the Underground Empire Bugnarok. This one wasn't as dangerous as their initial attacks had been, given that it seemed to consist entirely of Bugnarok's soldiers, the Sanagim. And their target was Kamakiri-Ohger's - Himeno Ran's - sovereign kingdom of Ishabana, which was able to get everyone to safety in the capital city of Flopital. Soon enough, only a single one of the enemy troops remained. "Oh, it's time for your end.", said Gira - Kuwagata-Ohger - mockingly. "Prepare to face the true power of the King of Evil."

But his ally Rita Kanisuka - Papillon-Ohger - stopped him from doing so, raising her own sword. "You are not a king.", she stated. "As the chief justice, the duty of execution falls to my blade."

"Hey, wait a mi tue.", Himeno further interrupted. "They attacked my kingdom. Surely I have the right to punish crimes against it."

"This is getting tiresome.", Yanma Gast - Tombo-Ohger - interjected, pressing down on the trigger of his Ohger Calibur. Ohger Charge! "Let's just kill him and get it over with. He's only a grunt." He then pulled on the blue switch of the sword three times, before pressing the trigger again. Ohger Finish!

As if on cue, something came down from the sky, falling into the hands of the surviving Sanagim, which caused the attack to be blocked. The object was then closely observed by the 5, with Kaguragi Dybowski - Hachi-Ohger - clearly identifying it. "An axe?"

Sure enough, it was an ornate looking axe, which had an amber crystal on the back of the blade. Black smoke emerged from the axe, causing the Sanagim's eyes to glow red, as a demonic sounding voice emerged from it. "Accursed insects! Destroy the accursed insects!"

He then swung the axe, generating a wave of energy that knocked the 5 monarchs off their feet with an explosion. "What power.", Himeno commented. "I've never seen anything like it from a Sanagim."

"I've also never seen one talk before.", Yanma added. "If I wasn't in horrible pain and on the verge of death, I'd by intrigued enough to study it."

The Sanagim then raised up the axe. "Come forth, Kuwaga Titan!" The amber gem on the axe then began to glow and envelop the Sanagim body as the sky was filled with thunder. As the light cleared, a black stag beetle with green markings appeared in the sky, with the front half splitting in half to reveal a humanoid head, and the shell section also split in half, with a pair of legs folding out, as the insect legs folded up and transformed into a pair of arms, complete with hands. "Jaakouken!" The robot then summoned a sword to its hand.

"It can't be.", Rita stated, almost allowing some emotion to enter her voice, before composing herself. "What I mean to say is, There is no way Bugnarok could have acquired a Shugod of their own."

"That isn't a Shugod.", Gira stated emphatically. "This is some form of… strange demon of destruction. A Hakaima."

"Whatever it is, we only have one way to counter it.", Yanma stated. "Let's summon King-Ohger."

Within a minute, the land's deity appeared to face off against the giant creature that Gira had dubbed the "Hakaima". But before the fight could begin in earnest, the enemy held out its hand, declaring "Jamahl Zone!" A crack appeared in the sky, into which both King-Ohger and the enemy were sucked.

On the other end, both fighters found themselves in a strange, featureless void with steam surrounding them. "What is this place?", Gira asked. When they caught sight of their opponent, he moved King-Ohger over to directly attack with its sword, only for it to have no effect on the Hakaima. "Where'd it get this power?"

"You may be strong in your world, accursed insects.", the voice controlling the Sanagim declared. "But in this Jamahl Zone, warriors of darkness are the ultimate." He then charged energy into his sword, before swinging it. "Titanic Thunder!" The attack made contact with King-Ohger, causing an explosion that separated it into its components, the 10 Shugods. They then shattered the walls of the dimension, all falling towards a blue planet, falling in different directions. "You've been defeated, but not destroyed. My work isn't done." The large Hakaima then flew through the crack, before it sealed itself up.

And back on Chikyuu, beneath the ground in the kingdom of Bugnarok, the esteemed Emperor of Destruction, Deathnarok the 8th, spoke to his Prime Minister Kamejim. "What did you deem so important as to pull me here?", the Emperor snarled.

"Something unusual in the last attack, Lord Deathnarok.", Kamejim reported, presenting his screen. It replayed footage of the recent confrontation. "During the invasion, one of the Sanagim somehow got his receptors onto a strange weapon. And with it, he managed to transform into a giant insect creature…"

"A Kaijim?", Deathnarok asked.

"No, this was different.", was Kamejin's answer. "Whatever this creature was, it vanished into a portal along with the humans' monarchs and King-Ohger. A partial that's still open, and shows us a world much like that of Chikyuu, only with different landmasses."

"No doubt, one filled with just as many revolting humans." Deathnarok hissed at the thought. "Which will be just as ripe for us to conquer."

"I have already created a new Kaijim to go and conquer this world.", Kamejim stated. "He will deal with hose wretched human monarchs when we find them." He gestured, at which point a creature that looked similar to a Sanagim, only with more unique armour on its back and arms, along with a pair of horns sticking out of its head. "Do you understand your task, Gamajim?" (Author's note: Derived from Kamakirimushi, which means "longhorn beetle")

"Yes sir.", Gamajim nodded, before a pair of wings emerged from its back, which it used to fly off towards the portal.

As you might have guessed by now, the world on the other side of the portal was Earth. But not Earth in the present day year of 2023, nor an Earth inhabited by an insect motif Kamen Rider. Those would be too obvious. Instead, on the Earth they had ended up on, it was early in the year 2002. This world had seen attacks from high-tech supervillains, the literal Devil in Hell, rogue robots built for assassination, a group of scientists plotting to wipe out humanity and revert the planet to primacy, an eccentric billionaire bent on controlling the crime in Tokyo, an alien criminal gang who wanted to use the planet as a base and an army of inter-dimensional conquerors who wanted to genocide the planet to lure out a legendary being. Currently, they were under attack from the Will of Darkness's Army (formerly Melzard) led by Mother Melzard. For close to a year, they had been repelled by the second generation of B-Fighters in a long and fierce battle. Currently, at the B-Fighters' Beetle Base near Tokyo, Japan, a strange reaction occurred with the Astral Saber, an ancient sword that had entered the Cosmo Academia's possession some time ago. This was observed by the organisation's AI Bit, who was unable to report it as everyone who could act on it was currently at their homes.

"Emergency! Emergency!", Bit cried out, to an empty room. "The Astral Saber's doing something." The hilt opened, with the 8 Insect Medals that were stored within the hilt emerging from within. 4 of them then flew away at incredible speeds that no machine could record, while the other 4 fell to the floor. "Half of the Insect Medals have disappeared."

And elsewhere, inside the evil fortress known as Melzardos, Mother Melzard also felt something, which alerted the three most senior of her 8 children, Raija, Dezzle and Descorpion. "What is it, Mother?", Raija asked.

"I sense… a presence.", was her answer. "One I have not felt within millions of years."

"Perhaps, this could be the Will of Light.", Descorpion suggested.

"Regardless, we will have to inspect its location.", Dezzle pointed out. "And I've recently monitored a tear in the dimensional barrier not too long ago. And one of them is nearby."

"In that case, Mother." Descorpion stepped forward. "Allow me and my B-Crushers to search for this presence and decide whether it is friend or foe."

"Very well.", Mother nodded. "If this presence is a friend, then bring them to me. Otherwise, you are to destroy them."

And this very presence had appeared within a nearby forest, looking up at the sky with its borrowed light receptors. "So, I've returned to Earth. Perhaps I can also take some revenge in addition to my grudge." Then, as if on cue, he was greeted by Descorpion and the rest of the B-Crushers; Mukadelinger, Killmantis and Beezack. "Ah, so this is my welcome committee."

"Who are you?", Descorpion asked, before getting a good look at the weapon his target was holding. "Geist Ax? How did you acquire it?"

"It collided with my grudge while it was drifting through space.", the dark entity answered him. "I latched onto it and drifted across dimensions in search of insects, upon which I discovered this vessel, a fellow soldier of darkness being preyed upon by bugs."

"Looks to me like a bug himself.", Killmantis commented. "But as you can see, we're not going to begrudge you your choice of vessel to possess."

"He is merely a temporary vessel, until I can restore my true self.", the presence responded to this. "But I can agree with the irony until I can get my sister to create a new body. In order to crush a bug, I need a bug."

"Your sister?", Beezack questioned. "Could you be talking about… Mother?"

Mukadelinger seemed to be getting even angrier. "We'll ask again. Who are you?"

"Oh, how soon people forget.", the presence laughed. "I am the scourge of dimensions, the conqueror of the vast infinite, the founder of the Jamahl." The silhouette of a badly burned pelvis, arm and head with a rictus grin appeared. "I am Gaohm."