Lu-Rookniu (Loo Rook-nee-u)

One of the Nine Horrific Lords

Lu-Rookniu is one of the nine Horrific Lords of the Outer Reaches, known in whispers as "She who crawls," Lu-Rookniu is the most widely worshipped of the Eldritch Beings with her perverse falsehoods permeating the minds of those that conduct sadistic rituals in her name. Her goal is to bring the whole of reality into one physical existence that is perverted and stretched into a grotesque monstrosity of oozing, creeping flesh.
This being masquerades as a goddess of nature, healing, and immortality that spreads her influence through many beings that are convinced of her lies. Despite possessing the ability to exist in other realms she prefers to exist in the mortal realm whenever possible though her existence itself is taxing, even for her power, and in order to exist, she requires constant sacrifice. In order to interact with our world, she requires extensive living creatures to take place both willingly and unwillingly in a ritual that turns them into an amalgamation of twisted, bubbling, flowing flesh that embodies the sentience of the Horrific One. The dimension that she is said to hail from is incomprehensible in nature and rare among the creatures of the Outer Reaches because she embodies the entirety of life and death in her own dimension. Her followers often liken her to a flowing stream of life, while the wise regard her as an uncontrollable river of madness that absorbs all that it touches and makes it one.
During the Eldritch War this being was constantly appearing in every corner of Isekai due to her influence and method of interacting with our realm, which she sorely desires further presence in. Her presence was nearly the end of the Southern Continent, specifically the Island of Blessings which is known to have been consumed and turned into a place of malice, disgust, and unnatural power. To this day few will venture to the island despite Lu-Rookniu's presence being banished and eradicated from the area during the intervention of the gods.
It is said that this creature is one of the oldest of the Eldritch Beings, starting from a twisted thought brought to life through morbid curiosity and madness of the creatures of the Outer Reaches that extend beyond written or spoken knowledge. The simplest explanation of her existence is found in the iconography of her followers, she is depicted as a writhing scab with many eyes that ascends from the abyss to take in the blood and souls of those that participate in her circle. This creature always seeks out a small, hidden presence in the world and waits for her followers to expand her presence through her dictated rituals. From that point she expands, taking in blood, bone, metal, magic and melting it all into one flesh that lacks any true consistency and defies explanation in any conventional or paranormal science. The most recent iconography of Lu-Rookniu is a vat of multi-colored essence, ooze, or smoke with multiple eyes that have their attention scattered about randomly in all directions.
When the living are sacrificed to the Eldritch Being a different subtley happens based upon whether they were willing or unwilling and is the basis for strict adherence to the rituals of Lu-Rookniu. Those that are sacrificed in dark rituals to this being will find themselves melting into a central point with others of the same type. The unwilling face a slow and horrific end as their body slowly turns to a gelatinous mass, painfully and impossibly melting into a sentient pile of slime in their general shape. This becomes twisted together with other creatures regardless of species where the subjects remain conscious and understanding of their surroundings as their masses fuse together into an abomination that continues to twist and meld into one. The end result is that all bone, organs, and skin deteriorates save for the eyes. The eyes retain their size, shape, and individual characteristics of the living creatures and it is rumored that some tattered remains of consciousness doomed to eternal torment and pain but the fate of the willing is far from merciful. Those that willingly participate in this ritual, including those that perform the ceremony experience their skin, organs, and soft tissues slowly melting over the course of a month leaving their skeletal structures intact, these are a difficult to recognize but powerful type of Undead. While their soft tissues serve to expand and enlarge the twisted creature of ooze and flesh created from the unwilling and willing the essence of Lu-Rookniu comes to possess it and to hunger.
The Undead created from the willing participants are stripped of pain, morality, and empathy with other creatures or purposes save for those that are bid by the will of their "goddess." These particular Undead are called "Lu" and have a host of abilities that are never seen with the more common Undead that they share an appearance with, skeletons. These creatures are made of living bone that has an amazing ability to regenerate and to overgrow itself into different structures like weapons, armor, or horrific devices for the capture and torture of the living which they bring back to the initial piece of Lu-Rookniu that they have summoned through their rituals. Through these perverse means, they gain a type of near immortality so long as their mistress lives, expands, and feeds on the flesh and fluids of the living.
The abomination itself will grow in power and ability as it grows in size, feeding off not only the physical tissues that it consumes but on the magical energies and the souls of those that it absorbs. It is said that the dimension that contains her true form is one that has been wholly consumed by her presence and exists as one entity melded together, one existence that is her with countless eyes and wailings of the incomprehensible horrors that exist under her will. This is the end goal of the Eldritch Being, to consume all and blend them into one undying, suffering mass that her existence permeates.

Divine Classification

Eldritch Horror

Species

Eldritch

Church/Cult

Cult of Lu

Physical Features

Lu-Rookniu is an ever-expanding mass of bubbling, oozing, flesh, and fluid that shifts between a solid and semi-solid with no discernable shape that is constant in her appearance. The defining trait of this entity is the enormous amount of non-uniform eyes that float about in the mass, surfacing and sinking beneath the ooze seemingly at random. These eyes do not move with purpose but rather seem to be individually controlled and in various states of being whether it be rolling in agony, searching in fear, or intently focused on anything that is not within the mass. It is often thought that these are somehow still connected to the souls and consciousness of the creatures sacrificed to create it though they seem to possess no control over their situation but rather just provide the entity with vision and some sort of sadistic pleasure through their continued and meaningless existence.
It is unknown if there are distinct or lasting features that this being can take but momentary shapes and formations have been observed to include enormous limbs, gaping jaws of monstrous proportions, and a thinning of the flesh and ooze to the consistency of string for the purpose of movement and entrapment. Despite having an appearance of slime the flesh of this creature is incredibly tough, hard to separate, and seems quite capable of simply melding back together regardless of the amount of force used to cleave it. During these movements and transformations, the eyes are incredibly active, bobbing like corks in the midst of an ocean and visibly trying to escape when threatened as they are the only part of the being that appears unable to reform immediately after receiving external damage. Instead, when an eye is injured it expands as if being inflated by an enormous amount of fluid and the sound of a thousand screams can be heard as it grows to several times the natural and possible size of the organ before bursting with terrific force.
Rumors and dark writings dictate that Lu-Rookniu has a central eye that exists somewhere within her realm and is the first instance of her existence, the goal of her cults is to one day expand her influence enough to entice her singular Eye to dwell among them and grant them eternal existence and purpose.