An odd construct of Black Gel that has taken on the shape of a young woman. The Black Gel originally was apart of the root of all things, The Primordial Soup of Akasha (or Akashic Pool), which came into existance through MuMu (The Goddess of All) at the beginning of the universe's creation. However, billions of years after the Pool's creation, a seperate Gel budded off from the Akashic Soup and fell to earth begun a 'life' of it's own as an independent entity. The Black Gel originally had no human form nor was it of this world (the Akashic Pool being located within the core of the universe), however the slime began to mutate and consume matter, growing and shaping itself into the entity that Kuro-Puurin is now. Kuro-Puurin, as she's come to be called by humans, exists only to expand herself by consuming all things and making them one with her every expanding mass.
Kuro-Puurin is one of the most powerful Amorphs ever to come into existance, this is not because she is a direct spawn of the Akashic Pool, but because she has consumed so many demons and entities whoes power has been absorbed into Kuro-Puurin's very being and has since fueled an constantly expanding well of power. For this reason alone, Kuro-Puurin was able to contend with the Gods and has even consumed a few Lesser variants, however before the Black Gel could devour the more powerful gods of the Tengokusekai (heaven); an army of Monks, Priests and Mikos from the Holy Order of Tengoku cornered and sealed her away within the deepest wells within the Hall of Ptolemea. Centuries later, Kuro-Puurin's body has managed to break the first seal and has completely flooded the deepest floors of the hall transforming into a varidable ocean of black slime called "Umi no Kuro-Puurin" or "The Ocean of Black Pudding".
Even though Kuro-Puurin has broken her seal, the Black Gel still cannot leave the Hall of Ptolemea. The tomb is Kuro-Puurin's only source of Mana that can sustain her life, this is due to the second seal; the Sealing Keystone that was placed at the center of the tomb by a powerful Shrine Maiden. The Keystone works by keeping Mana inside the tomb and thus keeps Kuro-Puurin alive, but also keeps her anchored at this location because she cannot survive outside the tomb with such an immense form (there just isn't enough Mana to fuel it), the fact that the surrounding area is a vast desert only works in the seals favor.
It is strictly forbidden to enter the Hall of Ptolemea, not because the seal...but because Kuro Puurin will seek out and drag any living things down into the Umi no Kuro-Puurin and drown them in the black sea.
Kuro Puurin herself has what many would call a "one-track mind" her very existence is to devour all things and send them back to Akasha for reconstruction by the Goddess of All. She has a soft face and even softer spoken voice but, her intentions remain as they are. While born with an ability to adapt, Kuro has exhibited no form of emotions beyond those that allow her to carry out her impulse to consume, she understands not why people scream she absorbs all that they love and cherish, she only knows that they make a lot of noise until they are eventually silenced never to be heard from again until the Goddess rebuilds the very universe. Interacting with Kuro is...awkward at best as she has literally no social skills and will quicker consume you than actually befriend you. However, as stated before, Kuro holds the ability to adapt so...this isn't entirely saying that teaching her about human emotions and values is impossible. It's just incredibly difficult and suicidal.
Oh lawd an apocalyptic and ravenous amorphous being brought forth by the
Circle_of_Jermod. Don't stop...
Just run...
Run, you asshole!
RUN!