UltSans hesitated, his hollow eye sockets scanning the dim hallway. The blaring alarms drowned out the sound of approaching footsteps, masking the presence of the guards closing in on his position. He stood still, his skeletal frame eerily calm, as if the chaos around him was nothing more than background noise.
Meanwhile, inside UltSans, the symbiote—still undefined, still nameless, a being without a host—continued its invasive exploration. It pushed deeper, past the physical, into the labyrinth of UltSans' mind.
What it found there was unlike anything it had ever encountered.
The first figure the symbiote saw was a white skeleton, dressed in a green shirt with yellow stripes and brown jeans. His face was partially obscured by a strange gray static fog that swirled around his eyes and forehead, leaving only his nose, mouth, and cheeks visible. The skeleton's expression was unreadable, his presence both calm and unsettling, like a storm waiting to break.
Next, the symbiote noticed a red phantom, her form flickering like a dying flame. She wore the same green shirt with yellow stripes and brown jeans, but her eyes burned a bright, unnatural red. Her presence was sharp, almost predatory, and her gaze seemed to pierce through the symbiote, as if she could see it even in this mental realm.
But the most terrifying figure was the giant black mass that loomed in the shadows. Its form was grotesque, half-melted at the bottom, with bones—ribs, spine, shoulder blades, and more—protruding from its oozing, tar-like body. Tentacles writhed from its back, sharp and menacing, while its claws—long, jagged, and dripping with an unknown substance—twitched as if eager to tear something apart.
Its face was a nightmare. A wide, demonic grin stretched across its features, revealing rows of sharp, glistening teeth. Its red eyes glowed with an intensity that seemed to burn through the darkness, radiating pure malice.
This was no mere figment of imagination. This was a manifestation of UltSans' hatred, his madness, and the corruption that had consumed him over countless resets.
The symbiote recoiled, its form trembling as it took in the horrors of UltSans' mind. It had expected to find a host, a vessel it could control. Instead, it found a battlefield of conflicting identities, each more terrifying than the last.
The white skeleton, the red phantom, and the black mass—they were all parts of UltSans, fragments of a broken soul. And now, the symbiote was trapped in the middle of it all, unsure if it could survive the storm it had unwittingly stepped into.
Outside, the guards were almost upon UltSans, their weapons raised and their voices shouting orders. But UltSans didn't move. His attention was elsewhere, focused on the chaos within.
The symbiote, still reeling from what it had seen, realized one thing:
This wasn't just a host.
This was a force of nature.
And it was no longer sure who was in control.
Chara's voice cut through the mental void like a blade, sharp and unyielding. Her crimson eyes burned with intensity as she glared at the intruding symbiote.
Chara: "What is that? No, no, no! Not another goop! I don't accept anyone! Whatever you are, get out! Before I kill you!"
Her tone was direct, her expression a mix of seriousness and anger. She stood tall, her phantom form flickering with an aura of defiance, as if daring the symbiote to challenge her.
Meanwhile, the giant black mass loomed in the background, its grotesque form unmoving. Its demonic grin remained fixed, its glowing red eyes locked onto the symbiote. It didn't speak, didn't react—it simply watched, its presence a silent but overwhelming threat.
Chara's voice snapped again, sharper this time, as she turned her attention back to the symbiote.
Chara: "We already have too much to deal with—hatred, madness, everything! I don't accept anything or anyone else that isn't useful!"
Her words were final, her stance unyielding. She wasn't just rejecting the symbiote—she was erasing its right to exist in their shared mind.
A softer voice chimed in, hesitant and uncertain. It was UltSans, or at least a part of him—the part that still clung to a shred of curiosity and kindness.
UltSans?: "But... we don't know what it is?... Maybe—"
Before he could finish, Chara cut him off, her voice a whip-crack of authority.
Chara: "Azzy, it's not the right time for your pure-hearted nonsense! I'm the one in control here. Focus on what's outside our soul!"
Her words were a command, not a suggestion. She wasn't just speaking to UltSans—she was reminding him of the hierarchy within their fractured psyche.
The symbiote, caught in the crossfire of this internal conflict, felt a wave of uncertainty. It had expected to find a host, a mind it could dominate. Instead, it found a warzone, with Chara as its ruthless general and the black mass as its silent enforcer.
For the first time, the symbiote wondered if it had made a mistake.
Got it. I'll stay completely faithful to what you originally wrote—no assumptions, no breaking the story or characters. Here's the refined version without adding knowledge the characters wouldn't have.
Abyss: "What... is that?..."
Its voice rippled into the space of UltSans' mind, distorted and uncertain. It had no real form here, no body—just a presence, an instinct that drove it to understand what it was seeing.
Chara's head snapped toward it, her expression cold, unreadable. There was no curiosity in her gaze, no sympathy—only irritation. The way she looked at Abyss was as if it were nothing more than an intrusion.
The symbiote twisted slightly, struggling to take in what it was seeing. The giant black mass loomed in the background, shifting ever so slightly, its grotesque form unmoving yet somehow aware.
Chara hesitated for a moment before scoffing, a low growl of annoyance escaping her.
Chara:"That!... That's Hate... Hatred from all humanity over years... Years of hell from those pitiful demons..."
Abyss shifted again. This explanation meant nothing to it—but the weight behind Chara's words, the sheer force of resentment, sent an odd sensation through its formless body.
Chara's voice hardened, sharp and unyielding.
Chara:"But don't try to play any card! I have enough with hate, and I won't tolerate any other corruption, or whatever you are..."
The symbiote hesitated.
It had no intention of "playing" anything—it barely even understood what it had stepped into. But the hostility in Chara's voice was enough to make it instinctively pull back.
Abyss slithered away, distancing itself from the confrontation. It didn't leave—it simply went deeper, moving through the strange mental space, drawn by an urge to understand.
It knew nothing of these figures. Nothing of their history.
But now, it knew what that black mass was.
Hatred.
But… how?
It wasn't just an emotion. It wasn't the feeling of hate. It was something literal, physical, alive.
Abyss struggled to process this. In its experience, corruption was always a label—something others called it. It had been branded a disease, a mistake, a failure.
But this… this thing—Hatred—was something entirely different.
Chara had called it a corruption.
That word struck Abyss in a way nothing else had.
Because if this was corruption… then wasn't it just like Abyss?
It latched onto that thought, twisting it into something it could make sense of. If Hatred was like a symbiote, then it would name it Hatred—to fit what it was. To make it understandable.
The more Abyss pushed forward, the deeper it saw.
Memories.
Abyss observed them like distant flickers of light, fragmented and scattered. It was a hell of a life.
Not in the way it had seen before—not pain in a physical sense. This was something worse.
This was a deliberate kind of suffering. A torment not meant to destroy the body, but to crush the soul.
A prison of emotion.
A punishment with no end.
Abyss did not yet understand the white phantom or the red one. It did not know their names, their pasts, or what they were to each other.
But now it knew something far more important.
It knew that the host—the one called Azzy—had been changed.
Not by time.
Not by nature.
But by Hatred.
And now, Abyss would have to decide.
Would it simply watch?
Or would it become part of this nightmare?