Entity 73 - "Abyssal Ooze/Kirai”

⚠️ Content Warnings ⤴

Info

Info:

Ambience— use headphones.

Warnings:

Body Horror
Suicidal ideation
Claustrophobia
Shaking text

Author's infodump ramble:

HUGE thank you to everyone who helped in this project. I've been wanting to fix up this page for SOOOO fucking long yall have no idea. I wanted to make Kirai isolated from the Pantheon— let it be its own page, and write a good "Backrooms wiki" article before worrying about all the other stuff.

The monster is always scarier when you don't see it, and all that. I really think you guys are in for a treat here.

Shoutouts:
Praetor3005 - Very cool (gave me greenlight and crit :)
C-Graph - Motivated me to start this damn thing, gave me top tier crit
Natedagreat563 - Crit me like 8 times jfc thanks man
scutoid studios - CSS
stellate - General feedback and motivation to make a page actually worthy of their fan art
PrinceBun - General feedback and concepts
Poliacci - General feedback and concepts
Sariastuff - Crit me like 4 times wtf man ty
centurys lute the same reason as Eggi, good criticism of the original page

“Yeah man, I've never seen anything like it- no matter what we throw at this stuff it just seems to take it! Its just uncanny really— WHOA HEY WATCH WHERE YOU'RE—”

Clink
SPLASH!!

Now you've really gone and done it, haven't you? Of all the days to miss an untied shoelace, it just had to be on the day you were assigned to perform testing on Abyssal Ooze.

You look down at your ruined M.E.G. lab coat, completely splattered with the infectious substance. There's no point in removing it. The black slime has already absorbed into your hands like water into cracked desert ground.

You stare into the deep swirling mass of black. Thoughts race through your head, as you reflect on your fleeting life. How could you be so stupid?

You contemplate your dwindling future as you sit in the steadily expanding puddle of inky sludge, and you debate whether or not to accept your fate. Perhaps it's best to go out on your own terms. To simply open the door to the hazardous materials vault, and grab a single bottle of Cashew Water. To take a few simple swigs of the enigmatic beverage, and go out with a bang.

Or perhaps, you needn't give up on hope just yet.

You make your decision.

You stumble out of the lab into the pristine hallways of M.E.G. Base Alpha.

Such a shame it would be to stain these hallways red with wretched flesh.

You discard the thought. Though you feel disdain for placing the poor base janitor in such a precarious position, duty always comes first. You at least know that much.

Shakily composing yourself, you begin a brisk walk to the hazardous materials vault, perhaps the last one you'll ever take. You build your resolve as you continue your mission, avoiding all distractions on the short trek. You don't have time for goodbyes. Your friends will understand.

It isn't long until you arrive at the ominous door to the object storage department. The large black letters spelling "restricted area, keep out!" may have kept you out in the past, but now? It's just a means to an end. You swipe your keycard, and the door unlocks.

You stare at the inviting abyss of the darkened room. It's almost suffocating.

Maybe you shouldn't do this. Go back to the lab, try to find another solution.

No. It's too late for that now. The infection will only spread from here, and you've already wasted enough time. You shut the door behind you, and turn on the lights. It doesn't take long for you to find the shelf of Cashew water— it's hard to miss, being surrounded by enough reality fresheners to make a Smiler melt into a mere puddle. You grab a bottle, and unscrew the cap. It smells nauseating.

You take one last look around the room. Is this really where you want to breathe your last? The floor of a dingy storage room?

"I lost the permission to care once I spilt that vial."

You raise the stainless steel bottle to your lips. The putrid aroma of the Cashew Water makes you want to vomit. You pinch your nose, and tilt back your head.

"Here goes… One…"

"Two…"

"Three."

Just as you begin to tilt the bottle upward, you feel yourself freeze. You refuse to go out like this. To die with the absolute minimum amount of dignity. To die without even having tried to fight for your life.

Doesn't the M.E.G. keep records for this sort of thing? We have our database, sure, but not everything is included in there. Surely I can find something of use, right?

You screw the cap back onto the bottle of Cashew water, feeling a new sense of invigoration. Despite the black lines creeping along your veins, you feel great. Energized. Prepared.

You leave the hazardous materials vault, and head across the hall to the classified records department.

Entity 73's liquid state, colloquially referred to as "Abyssal Ooze," is a fairly common substance that can be found in various places scattered across the Backrooms. The "ooze" in question is black in color, with a thick, viscous texture, similar to molasses. Most often, the ooze can be found leaking from wallpaper within indoor levels, and pooled in puddles or lakes in natural ones.

On its own, the substance possesses no special qualities or dangers, outside of being incredibly difficult to dispose of. The only time an agent should pay it any mind is if it comes into contact with human skin. For more information, see files "Infection Patterns" and "Encounter Protocol."

A vial of Abyssal Ooze.

Infection Stages
Stage 1	Approximately fifteen minutes after exposure, the victim's veins will begin to darken, becoming black and visible beneath the skin. During this stage, the subject is fully cognitive and aware of this process. While no pain is caused, subjects may feel distressed. This stage can last anywhere from ten minutes to seventy-two hours. Research into the inconsistency of the infection stage is currently ongoing, with leading theories suggesting that Abyssal Ooze functions similarly to snake venom once in the bloodstream. Other theories suggest that the constitution and general stability level of the individual is the key factor.
Stage 2	Stage two begins once the Abyssal Ooze has fully spread throughout the subject's nervous system and bloodstream. In this period, the subject will experience greatly heightened reaction time, senses, and heart rate. This stage usually begins within two hours after stage one's completion, and lasts for around thirty minutes. During this stage, the subject's mind will begin to slip into the clutches of Entity 73. Their grasp on reality will begin to slip, but the subject will fail to notice, due to the rush of endorphins caused by the start of this stage. Throughout stage two, the outside of the subject's body will slowly begin to be covered by a hard shell of chitinous black material.
Stage 3	Stage three begins once the substance has spread across the subject's entire body like a cocoon. At this point, the psyche of the subject has been fully overwritten and replaced with that of Entity 73. Once the transformation process is completed, Entity 73 will engage in a complete biological restructuring of its host. During this process, roughly 90% of the subject's body will be transmutated into Abyssal Ooze, from which Entity 73 will sculpt its preferred form. Infected individuals within stage three are to be avoided at all costs.

Kirai is frequently described as well-spoken and charismatic, and will often use these traits to attempt conversation with passersby. Despite this, encountering Kirai in its humanoid form is a rather uncommon occurrence. The entity's motivations are currently unknown, making this isolationist behavior a blessing in disguise.

Since behavior and memory are identical between instances of Entity 73, it is largely assumed that Kirai possesses some sort of a hive mind connection with its manifestations. This being said, instances of Entity 73 have only been observed one at a time, even across levels. If an individual should come into contact with Abyssal Ooze while Kirai is already active, their infection process will simply be paused until the current host expires.

While in possession of a host, Kirai tends to wander a variety of Levels, making it extremely hard to consistently track. However, there are a few telltale signs one can observe in any given environment that often align with the nearby presence of Entity 73. A list of currently documented "tells" is provided below, ordered from least to most likely in accordance with Kirai's presence.

+ Display tells

Location encountered	Phenomena experienced
Level 8	Caverns had been entirely overtaken by pitch black rock, making sight impossible.
Level 11	The ever-present white noise of city chatter became slowly muted as subject grew near.
Level 2	Pipes began to burst, spewing Abyssal Ooze onto the floor.
Level 9	The sounds of nighttime insects disappeared, leaving only the small hum of streetlamps to break the silence.
Level 9	Various large puddles of Abyssal Ooze were spotted in random arrangements.
Level 9	While perhaps unrelated, sightings of the Mangled and its cloak of fog dropped to 0% during the assumed time of Kirai's presence.
Level 1	The air became thick, almost viscous in quality— not unlike that of gelatin.
Level 1	An intense ringing in the ears was felt, accompanied by the pounding of blood in the head.
Level 158	Train car was entirely overtaken by black, branch-like tendrils. It is worth noting that this could have potentially been an observance of the level's own unique events, and unrelated to an actual instance of Entity 73.
The Blue Channel	Spiderweb-like cracks began spreading across the sky, revealing an empty void behind. Decay rate of abandoned levels seemed to accelerate.
Level 6	[OVERSEER LEVEL CLEARANCE REQUIRED.]

If encountered, Kirai has been known to occasionally grant certain favors to those who solicit it, with a debt to be repaid at a future time. Due to the M.E.G.'s extensive backlog of malicious interactions with other "deal maker" entities, all forms of interaction between Kirai and members of the M.E.G. are strictly prohibited. If Kirai decides you're worthy of approaching, do not engage with the entity. No matter what it may promise you, nothing good will come of it.

Falling back against the floor, you stare at the worthless file in front of you. You really thought this would be the key to your salvation, but no such luck. With nothing left to do, you drag yourself to your feet and begin to walk back to your desk.

You gaze down at your arms as you trudge back. You hadn't noticed due to your focus on the files, but your fingers have become rotten with gangrene up to the middle joints. The tips have begun to calcify with a hardened black substance, which feels fused to your skin. Sores open and burst as Abyssal Ooze runs down your hands, seeping onto the floor like maple syrup. You stare at it for a few minutes, before realization hits you.

SHIT! HOW LONG HAVE I BEEN LEAKING?

Your heart sinks as you turn around, witnessing the slick, greasy trail of black that leads into the classified records storage. You've got to do something. This much Abyssal Ooze is a massive biohazard, and you don't want your own ineptitude to hurt anyone else. As you attempt to make your way back into the room, you feel tug in your calves. Your tendons and ligaments burn with an icy fire as you experience the worst muscle contraction of your life. When you look down at your legs, you suddenly see why.

Your legs are covered up to the knees in black chitin that heralds your approaching fate. Moving is agonizing, but still possible. Despite feeling like your skin is peeling off like the layers of an onion, you press on. The distance to the door is only a few feet, but it feels like a mile.

Just a few more steps now. If you were going to die alone, at least let it mean something.

You slump into the door, jamming your useless hand into the door lever. You let your body weight push down on the handle, and you fall into the darkened room. Your heart is racing as you scan the area for a spray bottle, a mop, a roll of paper towels— anything to alleviate the steady stream of fluid leaking out of your body. You see where you left Entity 73's file. It lies only a few steps away, in a steadily expanding puddle of black.

Another round of cramps sends shocks of pain up your spine. You don't even have time to ponder the implications of this before you're on the ground. Your head smashes into the concrete floor of the facility with a sickening squelch, and your brain screams with stimuli as the impact threatens to give you an early exit.

No such luck.

You retch onto the floor, unable to force your body to remove yourself from the puddle of your own sickness. Your vision starts becoming hazy as tiny pinpricks of blackness start clouding around the edges of your view. You look towards the floor, only to realize that you weren't lying in a pool of your own vomit. You were lying in a pool of the very same black substance that has become the bane of your dwindling existence.

More pockets of Ooze burst from your fractured skull, and the viscous liquid begins to seep into your eyes. You can't move your arms to wipe your face, as they've been completely encased in the carapace quickly forming around you.

As your eyes drift towards the ceiling, you notice something out of the corner of your eye— a simple poster on the wall.

How disappointing.

You feel your consciousness sink into a formless void.

‡ Licensing / Citation

_cc _licensebox _metatag _title entity featured

page revision: 14, last edited: 17 Mar 2025 08:19

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The Backrooms

You've been here before.

Abyssal Ooze

Kirai