The Protagonist's Sister Is Actually The Strongest

The true origin of the King of Steel shocked Anna to the core.

Mostly because she was a fan of Power Ranger TV shows when she was a kid.

But nonetheless, to think that they were real somewhere…

And they got killed by their own robots!

It couldn’t get any worse than that.

They rushed towards her after amusing her with their story; their mechanical bodies were thirty meters tall each, not the biggest thing she has fought before, but there were five of them at once.

“Not good, I need more speed!” Anna thought.

“{Divine Thunder God Body: Raijin’s Embodiment}!”

RUMBLE!

Anna’s entire body flared with lightning, becoming pure divine thunder; their massive claws descended, only for her swords to intercept them all.

CLASH! CLASH! CLASH! CLASH!

The claws and jaws were pushed back as cracks spread through their metallic bodies, tiny pieces of metal falling and tearing down.

However, she noticed that their colorful cosmic energies continued to rapidly regenerate their wounds, making it a battle of attrition!

“So you’ve got extra regeneration now, huh?!”

She roared mightily, her beastly form still active as she combined it with her Raijin’s Embodiment, turning into a beastly divine thunder beast, half white tiger and half black fox.

She converged their powers together, amassing the White Tiger’s Holy White Flames and the Black Fox’s Abyssal Shadows together with her Lightning, her Myriad Self Arts, her Cursed Seals, her Heart of Hope and Love, and her Swordsmanship.

“{Myriad Self Blade Arts}: {Cosmic Soul Blade Beast Rampage}”

Her eyes glowed with bright beastly light as she rushed towards her nearest foe, the White Tiger, her massive, bulky body almost resembling a giant tiger-fox hybrid made of golden thunder.

CRAAASH!

Her swords cleaved through and sliced apart the White Tiger Robot, who screamed in agony!

“GRYYAAGHH…!”

As she heard him scream, she noticed several metal pieces and crystals floating around her, which she instinctively stored inside her Inventory.

“I AM… NOT DONE YET!”

The White Tiger form began to rapidly recover even as it was sliced apart, its energies converging, unifying metal and internal circuits.

“Not happening!”

She waved her hand, generating a massive sphere of pure, blinding light.

“{Holy Cosmic Nova}”

A Spell and a Spiritual Technique altogether into one, Anna combined it with the power of her own Physique, unleashing a truly terrifying attack!

“GRAAAAH!”

The White Tiger mech roared as the other four rushed to help it defend against the sphere! However, from within the Domain’s Walls, Sepa and Bastet emerged, transformed into their machine forms through Anna’s Automatic Mechanoid Assembly and Nanomachine Swarm giving them powerful mechanical, physical forms.

“Where do you think you’re going?! Helping a pal when you’ve got worse problems to deal with?!”

Sepa wrapped around the bodies of the Qilin and the Phoenix, beginning to crush them together with all her might, her Cosmic Powers rapidly starting to melt their cosmic metal!

“Like she said!”

Bastet slashed apart the head of the Golden Dragon and used her jaws to bite off the Turtle’s Tail, making them quickly turn against her, attacking her together.

CLASH! CRASH! BAAAM!

As this happened, the White Tiger was left defenseless as the Holy Cosmic Nova engulfed it on an explosion of several energies and elemental powers converging and erupting at once within a confined space!

Anna closed her hands, sealing the space using her Wind Spells and Vacuuming them within a certain area, forcing the explosive damage to accumulate and focus tremendously!

“UUAARRGH!”

The White Tiger screamed in agony as it was engulfed in a massive explosion, its metal unable to keep up with its regeneration, becoming completely pulverized.

BOOOMMM!!!

The four other beasts glared in disbelief, quickly roaring back against their attackers! The Phoenix burned through Sepa’s mechanical body and started to melt her instead, while the Qilin kicked her head off and smashed her body into the smithereens.

Royal Road is the home of this novel. Visit there to read the original and support the author.

CRASH! CRASH! CRASH!

Meanwhile, Bastet was torn to shreds by the Golden Dragon and the Turtle’s combined assault, being reduced to smithereens that quickly dissipated into light and disappeared.

BOOOM!

“Cheap imitations like those won’t stop us!”

“We are the True Masters of the Morphin Core!”

“White Tiger is gone, yes.”

“But did you thought we couldn’t bring him back?!”

FLUOOOSH!

Suddenly, their powers combined together as their bodies began to transform!

Anna instantly knew what this was.

“A combination sequence?!”

Metal transformed, twisting and turning into different shapes.

The Golden Dragon turned into a large torso.

CLANK!

The Phoenix into a head and blazing wings, attaching to the torso.

CLANK! CLANK!

The golden turtle split itself apart, becoming the two bulky legs.

CLANK! CLANK! CLANK!

And lastly, the Qilin combined into a single, giant, blue-colored arm with large black fingers to grasp things.

Ultimately, the head of the golden dragon surged above the phoenix-turned-head, becoming a golden helmet!

Anna had, of course, tried to stop them, attacking the mid-transformation, but it didn’t work; storms of colorful cosmic electricity pushed her back just enough for them to finish off.

ZAAAP! ZAAAP!

“Dammit!”

It seemed they were rather experienced in being interrupted when they merged and had learned how to create countermeasures.

“{Almighty Combination: King of Steel}!”

The titanic robot of over a hundred meters in height roared together, the voices of all beasts becoming the one of an old, brave man.

Their beastly bodies combined into a humanoid machine, with a bulky body and blocky appearance; his metallic face also slightly resembled a humanoid appearance, with glowing red eyes and a golden dragon helmet.

“Come, White Tiger Arm!”

FLUOSH!

Their powers rapidly revived the White Tiger, who became a new arm, and then their rainbow-colored cosmic energies manifested a massive sword.

“Holy fuck…”

Anna gasped as she rushed forward to fight; the titanic sword swung down towards her with the power to split worlds apart.

(Listen While Reading: Jet Set Run )

“Face the might of the King of Steel, Mortal of Flesh and Blood! {Aurora Blade}!”

In that moment, as she faced that massive sword, Anna knew she had to go even further beyond.

Her Transformation was a combination of several activated Skills.

Yet against this? It wouldn’t be enough.

She needed more.

“Alright, let’s do it.”

Anna’s hands clapped together; her Skills emerged from her Soul and rapidly converged with one another.

FLASH! FLASH! FLASH!

The spheres rotated around each other for a split second before fusing, three flashes of light emerging from them, erupting.

The power of her Eyes, as they shone with Divine and Cosmic Light activated.

“{Divine Eye of Truth: Fusion}”

As the skills fused, Sepa and Bastet rushed into the combination at Anna’s request.

“Sepa, Bastet! Infuse your Essence and a piece of your Soul, please!”

“Ugh! Aren’t you asking a lot?!”

“Fine, but this better be good!”

The two Constellations, in that split second, infused a tiny piece of themselves, alongside their essence, further boosting the Fusion!

FLUOOOSH!

The power was rapidly infused into Anna as her beastly form began to become more refined and perfected.

And then, she added one last ingredient as it was almost finished.

Metallic fragments of the King of Steel she had gathered herself, some including the crystals embedded into the core of the White Tiger Mecha.

“You’re going to fucking regret having killed my Saturday Morning Heroes.”

Ding!

[You have exchanged 300 Skill Points.]

[You have successfully fused the Skills: [Divine White Tiger’s Embodiment (SS)], [Divine Nine Tailed Abyssal Fox Embodiment (SS)], and [Mechanical Body Transformation (SS)] with the Cosmic Essence and Soul Fragments of Sepa and Bastet and the Cosmic Metal Fragments of the King of Steel, alongside a small crystal fragment of the Morphin Core!]

[You have created a new Fusion Skill…]

CRAAASH!

The Aurora Sword hit Anna in that moment; the strength of the King of Steel surpassed Worlds themselves as he set to split her Domain with his almighty combined powers.

“You’re done for!”

As he roared and his powerful aura pushed down, he felt…

Nothing?

“Huh?!”

Rainbow cosmic flames kept emerging, blazing through the Aurora Blade.

And yet...

Anna was not sliced.

She was pushing back.

CREAAAK…!

The massive hunk of metal started to move back towards the King of Steel; his mechanical eyes widened.

If he could sweat, he would be doing that right now!

Anna’s silhouette was revealed beneath the Aurora Blade; her hands were pushing the sword up.

The blade’s slicing power…

It was unable to pierce through Anna’s new armor.

A mechanical gold armor, covering her entire body from head to toe.

Her helmet was shaped like a golden cat, with black visors for her eyes.

Her chest armor metal was shaped like the head of a millipede, with sharp fangs and glowing red eyes made of jewels.

Her left and right shoulder armor was shaped as a tiger and a fox head, made of metal and with jewel eyes as well.

The rest of her body was finely wrapped in pure gold, shining brightly, cosmic light and tiny stars emerging constantly from her body…

There were many beautiful decorations through her armor, sharp fangs, claws, and even mandibles and bug legs finely assembled together.

And within the armor’s chest area, inside of the millipede’s metallic mandibles, a glowing golden and blue core had materialized, infusing Anna’s armor with a power from another world.

The same origin as…

“T-That’s…! Morphin Power?!”

The Morphin Power of the Morphin Cores of the Worldline of the King of Steel!

Anna’s long hair had become blonde and blue, growing incredibly long behind her helmet, waving around behind her, resembling a sea of gold, stars, and light.

Her Myriad Self Aura was already infused into her body, as rainbow-colored circuits began to light up around her armor, fueling it with her own Aura!

FLUOSH!

“You loved killing them, didn’t you?” Anna asked; her voice had become extremely serious and also…

Furious.

“Then I bet it’ll make you really mad if I kill you with their own powers.”

[You have created a new Fusion Skill: [Mighty Morphin Mechanical Armor: Four Cosmic Golden Beasts of Hope (SSS): Lv1]!]

[Due to the {Bookmark} feature within your {Skill Library}, the Skills used for this Skill Fusion have been preserved.]

The King of Steel started trembling, stepping back.

Traumas about being used as a tool by these humans flashed through his mind!

“T-This can’t be…! No…! It’s impossible! IT’S IMPOSSIBLE!”

He screamed furiously as he swung the Aurora Blade down once more.

And yet…

“{Mighty Morphin Weapon Manifestation}: {Golden Tiger’s Katana}”

A beautiful golden katana manifested in her right hand as she swung it up with all her strength.

SLAAASH!

Crack, crack…!

CRASH!

And the Aurora Blade was shattered into pieces.

“WHAT?! T-THE AURORA BLADE!”

The King of Steel screamed pathetically.

-----