The underwater nation known as the Abyssal Dominion of Kermadeep stretches across a vast deep ocean basin, encompassing the geological features of the Kermadec Trench and its surrounding abyssal plains. This dominion has evolved over centuries as souls from the multiverse reincarnated into forms suited to the crushing depths, drawn by memories of oceanic worlds or the promise of quests that reward settlement in matching racial or cultural enclaves. The lore of Kermadeep begins with the arrival of Isekai souls around 5,000 years ago, when a massive magical ebb in the ocean currents revealed ancient fissures in the seafloor, exposing mineral-rich vents and sediment-starved slopes that promised resources for gear crafting. Early settlers, many remembering lives from drowned coastal kingdoms or abyssal realms in other planes, established the first habitats within interconnected cavern networks and hydrothermal vent fields. The founding queen, a reincarnated soul from a matriarchal island society, declared the basin a sovereign dominion under her line, claiming all lands and resources in the name of the gods’ balance. Over time, the nation expanded as more souls migrated, incentivized by quests offering rewards for avatars resembling local species—such as snailfish-like beings or amphipod hybrids—to bolster cultural authenticity. Conflicts with wandering leviathan hordes and rival factions from shallower kelp forests shaped the dominion’s militaristic ethos, leading to fortified cities built from pressure-forged crystals and enchanted carapaces. Legends speak of the “Scholl Deep Awakening,” an event 2,000 years ago when a primordial subduction shift unleashed magical currents that enhanced gear attunement, allowing tier advancements tied to the trench’s unique pressure and chemosynthetic flows. This event solidified Kermadeep as a hub for alchemical innovation, where avatars harvest seep gases and vent minerals to forge items that harness the basin’s elemental water and fire for steam-powered utilities. The dominion’s history is marked by periods of isolation during magical maelstroms, fostering a resilient culture that views the depths as a sacred gift from the gods, limiting surface-like technology while embracing magic-infused industry. Queens have ruled through the female line, passing heredity via rituals that infuse successors with memories of past rulers, ensuring continuity in governance and the management of the monarchy’s ownership over all territories. Expansions incorporated sunken forests from ancient submergences and crystalline expanses formed by magical formations, integrating diverse communities that recreate past-life cultures in dedicated city districts.
The environments within the Abyssal Dominion of Kermadeep reflect the trench’s extreme geology and ecosystems, creating a layered landscape of darkness and wonder. At the heart lies the Kermadec Trench itself, a straight, sediment-starved chasm reaching depths of 10,047 meters, with jagged volcanic rock walls and abyssal plains covered in minimal silty sediments. Here, avatars navigate high-pressure zones where subduction activity generates seismic tremors and geothermal vents spew mineral-rich hot water, supporting chemosynthetic gardens of enchanted tube worms and mussels that grow rapidly under alchemical enhancements. Interconnected habitats include massive undersea caverns carved into the trench walls, rich in minerals and air pockets maintained by magical barriers, serving as residential networks for millions. Hydrothermal vent fields dot the basin, with bubbling methane and hydrogen sulfide converted into energy via pipelines, illuminating clustered domes in cities like Bubble Bastion. Kelp forests on the shallower trench slopes provide dense hiding places, with giant kelp enchanted for nutrient provision and underwater breathing aids. Deep-sea trenches within the dominion host bioluminescent flora and fauna, such as giant amphipods up to 34 centimeters long and hadal snailfish adapted to depths of 6,472 to 7,561 meters, alongside pearlfish species at 8,200 to 8,300 meters. Underwater caves network through volcanic rock, offering isolation for monasteries or research stations, while seagrass meadows on abyssal plains serve as breeding grounds with magical grasses for healing. Sunken forests of submerged ancient trees provide shelter, their wood used in gear crafting, and hybrid areas like magic-infused lagoons alter salinity for diverse species. Floating habitats anchored to the seabed near the surface allow interaction with terrestrial visitors, and subaquatic gardens cultivate land and aquatic plants under magical light. The basin’s terrain includes crystalline expanses from magical formations and jagged lava flows, with “weather” patterns like unpredictable currents, seasonal leviathan migrations blocking routes, and magical maelstroms that ebb and flow, affecting stability and travel.
The people of Kermadeep, a mix of avatars from various reincarnated souls, feel a profound sense of pride and loyalty to their country, viewing it as a bastion of resilience against the unforgiving depths. Many express gratitude for the monarchy’s provision of infrastructure, seeing taxes as a fair exchange for the safety of fortified cities and the benefits of public works like enchanted barriers that equalize pressure. Avatars often speak of the dominion as a second chance at life, especially those who remember surface worlds lost to floods or wars, fostering a collective identity tied to adaptation and communal survival. There is a shared reverence for the queen’s line, with heredity passed through females evoking stories of enduring matriarchs who guide the nation through seismic shifts. Daily magic use reinforces a feeling of empowerment, with adults casually employing spells for tasks like illuminating dark trenches or propelling submersibles, leading to a normalized acceptance that binds communities. However, some feel a subtle undercurrent of restriction due to the monarchy’s ownership of all, with whispers of longing for more personal autonomy in gear crafting or habitat expansion. Non-humanoid avatars, such as snailfish-like beings or amphipod hybrids, feel included in the cultural tapestry, as the line between people and monsters is blurred, promoting a sense of unity in diversity. Children, before reaching reproductive adulthood and gaining magic, are cherished and protected, with compulsory education instilling national pride through lessons on trench lore and local languages. Overall, the populace feels secure in their isolated depths, with a patriotic fervor during festivals that celebrate Isekai origins, though isolation breeds occasional yearning for surface connections.
The potential positives of Kermadeep abound, offering avatars a secure haven in its deep basin where the monarchy’s central governance ensures efficient resource distribution through taxes funding military defenses against leviathan incursions and public utilities like steam-powered lifts and magical light channels. The nation’s isolation from surface conflicts provides safety, allowing focus on alchemical innovations from vent minerals and seep gases, leading to advanced gear forging that accelerates tier advancements in pressure-enhanced environments. Diverse environments foster unique magical flows, enabling rapid growth of enchanted mussels and tube worms for food and potions, supporting a population of millions with sustainable aquaculture. Cultural enclaves recreate past-life societies, rewarding similar-race migrations with quests, enriching social fabric and promoting harmony among varied avatars. Common magic use enhances daily life, from telepathic communications in dark caves to illusionary performances in arenas, creating a vibrant society. Hereditary stability through the female line ensures consistent leadership, with queens overseeing compulsory education in central cities like the seat of government, equipping youth with cultural knowledge before adulthood grants magic. However, negatives persist, including geological instability from subduction-induced seismic activity that threatens cavern collapses and habitat breaches, requiring constant magical repairs. High pressure and perpetual darkness demand specialized gear for survival, limiting mobility for lower-tier avatars and causing psychological strain from isolation. Territorial disputes with rival underwater factions or monster hordes strain the military, and the monarchy’s ownership of all can foster resentment among those desiring personal property, leading to internal conflicts over resource rights. Environmental challenges like unpredictable currents and magical maelstroms disrupt trade routes, while seasonal leviathan migrations block access to vent fields, impacting food production. The blur between people and monsters sometimes leads to cultural clashes, and the lack of innate magic until adulthood leaves children vulnerable, with heinous crimes against them severely punished but still a societal fear.
Other important information for the Abyssal Dominion of Kermadeep encompasses its governmental structure, centered in the capital city of Scholl Bastion, a massive domed metropolis in the trench’s deepest point, where the queen resides in a submerged castle fortified with force magic. Major cities like Ventforge and Seep Haven participate in governance through councils of elder avatars, advising on issues like resource mining and defense wards. The monarchy owns all lands, with avatars renting via taxes that fund roads of enchanted sediment, public parks in seagrass meadows, and utilities like transmutation spells for waste recycling into nutrients. Heredity passes through the female line, with queens selected from daughters infused with ancestral memories during rituals, ensuring wise rule. Adulthood arrives at reproductive capability, granting magic and legal rights adjusted by local cultural rules, such as age restrictions on gear attunement in cavern districts. Compulsory education in schools teaches trench-specific skills, like navigating currents or harvesting bioluminescent flora, alongside local languages for diverse Isekai origins. The nation’s population mirrors world-wide tier distribution, with 40% at tier 1 focused on basic labor like sediment farming, 20% at tier 2 handling alchemical trades, 10% at tier 3 in military roles, 5% at tier 4 leading guilds, and 2% at tier 5 as elite mages overseeing magical reactors. Lavish costumes, essentially worn gear, are normal, resembling elaborate cosplay with fin enhancers, shell plates, and thermal vision goggles enchanted for daily magic use, accepted as commonplace. The distinction between people, beasts, and monsters is perspectival, with many “monsters” like giant amphipods having their own civilizations integrated into border communities. Cultural festivals celebrate Isekai diversity, such as the Vent Harvest Feast where avatars share past-life stories amid potion tastings. Defense integrates natural adaptations, like shrimp beings’ thermal vision for patrols, with magical shields against pressures. Trade routes connect to surface islands via levitated submersibles, exchanging crystals for woods, regulated by the monarchy to prevent overexploitation. Family units form across varying lifespans, with gestalt avatars like swarms creating communal bonds. Artistic architecture blends coral constructs with vent-forged metals, and medical practices use deep-sea potions for pressure ailments. Exploratory expeditions venture into uncharted trenches for relics, while alliances with floating cities share resources. Population growth is regulated by habitat expansions via magical barriers, preventing overcrowding in the basin’s limited spaces. Emergency protocols activate reserve crystals during low magic flows, and reincarnation hubs fit new souls with basic gear for integration.