Bottomless Abyss

Biodata

Cosmology

• The Bottomless Abyss contains infinite layers of planes and expands through infinitely branching time-spaces across the Multiverse. Its branches may form projected worlds or become isolated branch-type Abyss worlds with their own development paths. 195 584
• Its time flow is eternal and unchanging, making Abyss time a reliable reference even for beings traveling between worlds with differing temporal rates. 142
• The Abyss is a fundamentally hostile environment: conflict, betrayal, slaughter, and destruction define its native order. 1 585
• A branch Abyss may be much weaker than the main body due to restricted energy and population, despite sharing some abyssal characteristics. 195
• In some time-spaces, the concepts of the Bottomless Abyss and Styx River are implied to have been introduced as hidden external factors; the resulting subspecies develop differently according to their host plane's environment. 1012 1013

Demonic Hierarchy

The Styx River

The Primordial Sea of Demons, also called the Styx River, runs through the Abyss's infinite layers. It embodies ultimate death while serving as the origin point from which endless demons are born. 1

• When the Styx tides recede, countless demon eggs are left along its banks. 1
• Its scarlet water devours anything that touches it, including Gods, and assimilates intruders into the river itself. 1 574
• Flight, burrowing, and spatial manipulation are normally forbidden near the Styx; passage requires a Styx Ferryman or long-distance teleportation. 574
• The river also manifests as tributaries within individual Abyss Layers, including Crimson Heaven. 574

Ecology and Society

• Demons are immortal in the sense that they do not die of old age, but their practical life expectancy is extremely short due to constant predation and combat. 41
• Most newborn demons die before leaving the Styx riverbank; those that survive face a stated 99.999% chance of dying in later battles. 41
• Demons may draw knowledge from bloodline inheritance, but killing, destruction, and plunder can also earn the favor of the Abyssal Will and unlock its accumulated knowledge or treasures. 3 15
• Material resources are treated as secondary to power. Continuous slaughter directly enables demonic growth, making outsiders who enter for trade or profit potential prey as well as economic participants. 210
• Native Abyss Demons possess exceptional inherent talent and receive additional advantages while within the Bottomless Abyss, making other Abyss Lords reluctant to provoke them without cause. 571

Abyssal Laws and Mechanisms

Abyssal Contract

The Abyssal Contract allows demons to answer summons and form contracts with other beings through the power of the Bottomless Abyss.

• Contracts are stated to be unbreakable, even by a Demon Prince. 4
• It provides a means for demons to cross into other worlds through summoning rituals. 45
• Demons possess relative resistance to foreign world rules, enabling planar invasions that would immediately destroy many other lifeforms. 164

Advancement and Favor

The Abyss rewards destruction that aligns with its nature.

• Demonic advancement is influenced by individual strength and achievement; stronger candidates receive a wider range of possible advancement paths. 4
• Slaughter and destruction can please the Abyss Consciousness, granting knowledge and resources unavailable through ordinary study. 3 15
• Repeated planar destruction is considered a route toward qualifying for Demon Lord-level advancement, though the required resources and opportunities are extraordinarily rare. 27

Abyss Layers

Abyss Layers are individual domains within the Bottomless Abyss, each with distinct environments, inhabitants, and rulers.

• A Demon Lord possesses absolute dominion within their own Abyss Layer and can adjust its rules according to their authority. 576
• An Abyss Layer also functions as part of its Lord's immortality; destroying the main body alone is insufficient while the layer, avatars, projections, and other anchors remain. 576 585
• Lords commonly secure or create layers from fragmented time-space, then establish barriers, rules, terrain, and energy systems under their authority. 571

Abyss Blood War

The Abyss Blood War is a Special Domain within the Bottomless Abyss dedicated solely to unrestricted slaughter.

Notable Locations

Major Events

• The Bottomless Abyss drags the defeated Miling Plane and its attached dimensions into itself after the plane's resistance collapses. 166
• Orsaga reaches Demon Lord status by offering the Warhammer plane to the Abyssal Will, prompting a major reaction among Abyss Demons. 569
• Orsaga constructs Crimson Heaven from the remains of a destroyed Abyss Layer, drawing the attention of neighboring Abyss Lords. 571
• The Abyss Blood War becomes a major battlefield for Orsaga and his forces, enabling massive power acquisition through its unrestricted absorption law. 1552 1553
• The return and awakening of Great Beings causes widespread structural changes throughout the Multiverse and destabilizes the Abyss Blood Battlefield. 1752 1753