The Village of Iruburu

Iruburu (イルブル) is a village in the 6th layer inhabited entirely by Narehate, created by the Three Sages. The Force Field does not exist in the village, and by extension, neither does the Curse.

Narehate in Iruburu take the form of what it is they most desire, and are granted the village's protection. In exchange, they are bound to the village.

The village itself seems to be somewhat sophisticated. It has restaurants, inns, and a system of currency.

The main industry in the village is trading based on the concept of "Value." The inhabitants are constantly trading and bartering for things of equal or higher Value. An item's Value seems to be self determined by whoever is in possession of the item, as well as by the village itself based on the importance the item has to its owner. It is such an important concept, that when a customer damages an item before it is paid for, an event called "The Balancing" occurs. A noise rings out across the village, and one of the perpetrator's possessions of equal Value is destroyed. The perpetrator may even be maimed in order to compensate for the defacement, if the Value of the damaged item is high enough.

Humans are of especially high Value, especially human children.

Furthermore, inhabitants of the village are able to use the Balancing, or a concept attributed to it, to seemingly use it as an omnipotent tool of creation, or recreation, as long as the user has a concise image of what they desire and can compensate for it. However, it isn't specified if the Value compensation is based on the creators' perception of the thing to create or by the village's understanding of it.

It also is unknown if it is possible to use "lower Value", which manifests as currency of the village, to compensate in this instance or if it requires the use of the one's body as the only instances of usage had the respective inhabitants compensate with their bodies.

Since the Narehate of Iruburu cannot leave, the only way they can hunt is to lure prey into the city.

History
The village was created by members of Ganja, who originally set out to find, what natives called, "Shourou's Golden City" on the 6th layer of the Abyss. After learning from Interference Units they met that they wouldn't be able to return to the surface, Ganja set up a permanent camp on the 6th layer.

After some time, many Ganja members got ill and Belaf found out that the cause of the sickness was the water they had been drinking, due to it being infected by some unknown creature of the Abyss. During the time of the illness spreading, the members of Ganja who hadn't fallen ill the an discovered an Artifact that granted the deepest wish of a person while holding if their mind wasn't too "complex"; Cradle of Desire.

Vueko requested it to be given to Irumyuui, a native girl who had accompanied them into the Abyss as a guide after her tribe banished her for infertility, in the hope of saving her from the illness. Wazukyan, the leader of Ganja, agreed and the Artifact was given to Irumyuui. The Cradle of Desire caused Irumyuui to transform and gave her the ability to birth small rabbit-like creatures. However, these creatures were born without organs for ingestion, causing them to die shortly after birth. Ganja resorted to use them as source of sustenance, as they lacked other viable options. It was later discovered that eating the creatures could could cure them of the illness caused by the bad water, though only if the meat was fresh enough; butchered before it died on its own.

At some point in time, a second Cradle of Desire was given to Irumyuui by Wazukyan. Over time, Irumyuui transformed more and more until she reached her final stage with the ability to transform humans into Narehate. In this form, she had already lost her consciousness and became the base of the village. Due to Vueko not agreeing with this, she tried and failed to take her own life and was imprisoned in the part of the village that used to be Irumyuui's head, in order to keep her from harming herself.

Some time later, Faputa was born, due to the wish Irumyuui had made with the second Cradle of Desire, and unlike the Narehate transformed by the village who can't leave it, Faputa can't enter it.

After Reg had brought back body parts of Faputa into the village to trade them for Nanachi, it reacts to them and Juroimoh starts to attack to claim the parts. In the battle with Juroimoh, Reg shoots his incinerator creating an opening in the village causing damage to its protective boundary and it starts to disperse. This leads to a confrontation between Faputa, the villagers and Reg, which is ultimately interrupted by creatures of the 6th layer swarming into the village and beginning to wreak havoc.

The village started to crumble and fade away completely after Faputa used her control over it to start a process of taking in its remaining Value and it ultimately vanished completely leaving only rubble from its collapse behind.

The Luring
The Luring is an event in which the inhabitants of Iruburu, who cannot leave the village, lure in creatures from outside to hunt, therein increasing the total Value of the village. During this event, the inhabitants attempt to damage the creature and let themselves be damaged by the creature so that the Balancing deals with it. A primitive form of it can be seen when Irumyuui hunts the flying creatures that are preying on the members of Ganja during the creation of the village.

The Luring event is not always succesful in completely hunting down the prey as the Fuzosheppu had previously been lured into the village but managed to escape when it was almost completely whittled away.

The Luring lets villagers see various creatures of the Absolute Boundary but one in particular seen during the destruction of the village was never before seen during one.

Language
Iruburu has an extremely convoluted language system, wherein the meaning of words tends to change back and forth. For example:

"Iruburu" means: "Jakopufu" means: "Indebu" means:
 * "village" 50% of the time
 * "cradle" 40% of the time
 * "mother" 10% of the time
 * "to request" 40% of the time
 * "special" 30% of the time
 * "stimulus" 30% of the time
 * "Seems like a lie but is true" 60% of the time
 * "Deep emotion" 40% of the time

Phrases the restaurant worker taught Riko

 * "Konbosu" (Understood)
 * "Kefukeferi?" (What is its rough Value?)
 * "Maen" (A generous affirmation)
 * "Ngamu" (A generous negation)
 * "Mimiu" (Excuse me a moment)
 * "Ienme" (Thank you) (80%)
 * "Riezoochi" (Sorry)
 * "Famo" (See you later)
 * "Sansaika" (I want to go)
 * "Rahossu" (I want you to do this for me/ Please)
 * "Shukaeigiitsu gosshusosu" (You will go bankrupt if you buy me)
 * "Kobuchakkyuu jinshiitsufaffu" (Do you know of a robot and a fluffy one?)
 * "Rahochusosu jinshiitsufaffu" (I'm looking for a robot and a fluffy one)

Other phrases  :
 * "Hadimae" (Whoops/ Ah/ Exclamation Point)
 * "Ngangamadeimo" (I don't understand)
 * "Menme" (Come in)
 * "BURUUsou" (Hello There)
 * "KUGUfamoHONdeissosu" (Children sure are cute, aren't they?)
 * "Fasshenburee" (Let's do this, everyone)
 * "Indemaen" (Of course)
 * "Rahoossu" (Do it now, please)
 * "Sazonfattsu" (Metal Wire Squad/Wire Team)
 * "Wiigorii" (Hold it down)
 * "Mepopohon" (Sleepyhead)
 * "Haniisuku" (Inn)
 * "Shazara faberasozu debei" (The scent of your blood is attracting beasts)
 * "Jimuntsu modikopoh" (What are they talking about)
 * "Madimo" (I don't know)
 * "Adimono jimuntsepo" (They are talking in the newcomers' tounge)
 * "Modipoh" (What is that noise)
 * "Rie" (My bad)
 * "Abuee" (She is inside)
 * "Imigootsue" (She is still inside)
 * "Bigoou" (Now)
 * "Zoi poojyu" (She stopped moving)
 * "Menbuesu" (Go)
 * "Menbuee" (Move)
 * "Jyazaraa Mugumodi" (What beast is that)
 * "Mijumo" (No idea)
 * "Baajazusu Jizumoo" (Haven't seen, even in "Luring")
 * "Konboissu" (Sure)
 * "ENnu sosu" Brought them out this way, have you?)
 * "ENnu HONdINDEbuu sosu" (So you really brought "their" child out this way)
 * "FURUFU de fabera" (Damned Narehate)
 * "Mandappu! Famosu!" (Thanks for the meal! Until next time!)
 * "WANbu" (take it)
 * "Shourou" (The Capital of the Unreturned)
 * "ZOOmu" (Curse)

Trivia

 * According to Wazukyan, it has been 150 years on the 6th layer since the village was created.
 * An inhabitant only ever mentioned in name, without having an appearance in the story themselves, is the Narehate puppet maker, named Jezun.
 * The reason why a "human child" had an extraordinary Value was because the village was originally..."that."
 * In a Twitter exchange, Akihito Tsukushi named one of the background villagers appearing in the anime Moichemo.