My body is controlled by it

Now, the one controlling William’s body—was no longer William.That armor—the chest armor Singogeni—was the one in control.
"At last, I can do what I want," with William’s body, the armor smiled.
From William’s smile and gaze—or rather, from the armor’s smile and gaze through William—it was clear that all of its evil plans were being revealed.
"Arga!" Sudirja shouted.
Arga understood the signal’s meaning. He immediately created a clone of himself while leaping into the air.
Still, it wasn’t enough to defeat that armor.
"So weak," with William’s body, the armor sneered.
When the armor controlling William stomped on the ground, all of Arga’s clones were blown away.
Arjuna and Sudirja knew they also had to confront it. So they prepared their magic circles.
The armor let its enemies finish their preparations—not because it didn’t notice, but because it wanted the battle to be entertaining. The first attacks it received had been far too weak.
At the feet of Arjuna and Sudirja, magic circles formed. The two circles had different patterns, but both glowed with the same color: sky blue.
"Sukmo rupo lan hurep asmo progo, sang wiro dadi roso lan rojo kan sukmo!" Sudirja and Arjuna shouted in unison.
Two objects appeared before them:
In front of Sudirja, a long sword engraved with the motif of a serpent and the sun.
In front of Arjuna, a golden arrow with the motif of an eagle.

Without hesitation, Sudirja rushed toward William, whose body was being controlled by the armor. His slightly glowing sword clashed against William’s right hand.
If the armor hadn’t been attached to William, clearly his alter’s arm would have been severed as easily as slicing through wet clay bricks.
"Oh~ this is all you’ve got~?" the armor complained, speaking through William’s mouth.
From the pouty expression the armor gave through William’s face, it was clear: disappointment and boredom beyond measure. The armor intended to finish off the three standing before it.
The Singogeni armor (the alter-version armor from the one attached to William’s body) sensed something dangerous. Without waiting for a summoning command, it appeared on its own, wrapping itself around Sudirja’s upper body as its host.
"Oi, I didn’t call you—what the hell are you doing showing up!?" Sudirja yelled, panicking as he looked at the armor now on his body.
"I had a bad feeling if I didn’t," Singogeni replied—more precisely, the alter-version of Singogeni.
Singogeni felt delighted upon seeing someone else wearing an artifact similar to itself. From William’s smile—now controlled by the real Singogeni—it was clear: uncontainable joy.
The battle it desired had finally arrived. Without waiting any longer, William—controlled by the true Singogeni—lunged at Sudirja. His hands clashed against Sudirja’s palms.
Clearly, that wasn’t Sudirja’s movement. It was the alter-version Singogeni, controlling its host’s body.
"Oi!" Sudirja barked.
"Sorry, master~ reflex, reflex," the alter-version Singogeni answered.
But the attacks from the true Singogeni didn’t stop there. With William’s body, it kept striking.
Though the strikes had no actual effect, the alter-version Singogeni kept controlling its host to dodge and block.
"Oi! When the hell will this stop? If you keep moving too much, I can’t think of a strategy!" Sudirja barked.
"What else can I do, master~? If I stand still, it’ll be even harder to think clearly," the alter-version Singogeni replied.
"Fine, later then," Sudirja muttered.
"Alright," the alter-version Singogeni sighed, sounding resigned.
Sudirja thought of a plan to restore his alter’s consciousness. But his brain found it hard to think. His body kept colliding with the true Singogeni’s strikes, delivered through his alter’s body. Physically, the attacks had no effect—but mentally, they did, albeit in a different direction.
He was already extremely irritated by those nonstop strikes. His chattering teeth and reddened face made it clear that his irritation was utterly uncontrollable.
"Dammit! Can you stay still for once!?" Sudirja roared, punching his alter who was being controlled.
His fist struck his alter’s chest, but of course his alter wasn’t blown away—their strength was equal.
However, that strike unleashed a massive shockwave, blasting away the other two: Arga and Arjuna. It also erased Arga’s newly created clone before it could attack.
Meanwhile, throughout the fight, William struggled to regain consciousness. Right now, all he could see was darkness. A strange kind of darkness—everything was black, except for his own body.
Where is this?
William tried to recall something. He remembered he was supposed to be part of an investigation. He was supposed to be in a cave.
Wait, wasn’t I attacked by some strange armor in that cave?
He tried to recall everything. Slowly, he began to understand.
Am I dead?
He tried slapping himself, just to check if he was dreaming. But strangely, the pain came from his chest.
What the hell? I slapped myself. A 'slap' means hitting the cheek with an open hand, right? So why does it hurt in my chest?
He tried to remember more—maybe he could find a clue about where he was.
Oh right, in this world there’s something called fragtesis. If I recall correctly, the definition of fragtesis is: an alternate or imaginary spatial of a world. Sure, my alter explained it differently… like a reality that seems like another world but still belongs to the same world, same spatial coordinates, and same timeline. But in simpler terms, it’s basically an alternate or imaginary spatial of a world.
William then remembered something else: a concept in mathematics called dimension.
Fragtesis is the alternate or imaginary spatial of a world. In my previous world, there was no fragtesis. That means this world has a higher dimension than my original world, huh? But how strange—this is a five-dimensional string world, yet its civilization is still only at 0.2 on the Kardashev scale.
William nearly forgot something important: to confirm whether he really was dead, or just in another fragtesis.
Oops, almost forgot. Focus, William. Focus.
He tried activating a magic circle—but nothing happened.
Ah. Yeah, I’m dead. This is it?
He could only surrender now. To him, it felt like he was truly dead. Even if he denied it, he believed nothing would change.
But just as he was about to sink his thoughts deeper into the darkness, something disturbed his hearing.
He heard a noise. A noise that grew louder and louder.
So damn noisy.
He covered his ears, hoping the sound would disappear—but it didn’t. The sound only grew clearer. When it turned into the ringing of metal, he finally understood. He wasn’t actually dead. He had only fainted after the armor flew at him.
That’s why he struggled to wake up, to regain consciousness. With all his strength, he tried to sense the surroundings he couldn’t yet see.
And after a long struggle, at last, he regained his consciousness.
"Damn it, he’s already awake," the true Singogeni grumbled.
"Oh, you bastard! You’re the one who made me struggle like hell!" William roared.
"Singogeni of this Time Nexus—are you the cause of the villagers of Kemarus disappearing?" Sudirja asked.
"No, I came from outside the village. I only used one of the villagers—who happened to be at my location then—as a host. But when I entered the village, my host suddenly vanished. I ended up in this cave because a Jerangkong wore me and carried me here," the true Singogeni explained. "Anyway, please let’s continue our fight."
"What!? Say that again and I’ll tear you apart right here!" William snapped.
"Idiot!" Arga shouted.