Sea of Worlds

Biodata

Feature	Information
Name	Sea of Worlds (界海)
Type	Inter-world realm and Realm Master collective construct
Status	Extant
First Appearance	Chapter 311

Nature and Structure

• The Sea of Worlds contains innumerable worlds, including the Immortal Martial Realm and the Secret Worlds visited by Lu Changsheng. Its worlds are described as countless as grains of sand in the Ganges River. 311
• From within it, worlds resemble palm-sized nebulae in a star-filled expanse. The Immortal Martial Realm is at least ten times larger than nearby worlds. 318
• It is characterized by disorder: space is distorted, rules are chaotic, and hostile forces continuously erode outsiders. 318
• Spatial formations and spatial traversal cannot be used within it due to its chaotic space and rules. Ancestor Realm martial artists instead cross it by physically sprinting through space. 319
• A world whose origin is exhausted and rules shattered can be fully eroded by the Sea of Worlds, becoming a dead, desolate place where life cannot multiply. 363

Realm Master Composition

• Realm Master lore identifies the Sea of Worlds as the result of countless Realm Masters voluntarily merging their evolved worlds for mutual survival after being hunted throughout the Great Universe. 484
• It exists within the Great Universe while also being described as existing between reality and illusion, resembling a vast bubble filled with the smaller world-bubbles of Realm Masters. 496
• Each integrated Realm Master leaves a core imprint within the Sea of Worlds. If their world collapses outside it, the imprint can allow them to recover over time. 496
• Other Realm Masters can permanently kill a Realm Master by destroying their world and uprooting their imprint from the Sea of Worlds. High-level Transcendents are also said to be capable of killing Realm Masters. 496
• Realm Masters cannot casually enter one another's worlds; doing so is regarded as prying into another's secrets. 496

Properties

Traversal

• Movement through the Sea of Worlds covers distances in the Great Universe that ordinary Transcendents may be unable to cross in thousands or tens of thousands of years. 496
• This unmatched travel capacity makes Realm Masters the usual carriers for major merchant guilds' transport missions. 496 497
• Only Realm Masters can ordinarily sense and locate the Sea of Worlds directly. 499

Danger to World-Born Life

• Beings born within ordinary worlds generally require Martial Dao Supreme-level strength to survive within the Sea of Worlds; even Heavenly Saints may perish there. 311
• Lifeforms born in the Sea of Worlds itself are unaffected by this survival restriction. 313
• Lu Changsheng's Heavenly Saint Dao Body could resist the erosion only temporarily; the Ancient Mansion Martial Ancestor had to shelter him within a Martial Ancestor phantom to protect him. 318

Realm Master Conflict

• Realm Masters maintain distance from one another while traveling within the Sea of Worlds, since an attack there can result in permanent death. 498
• Ruined worlds left behind by fallen Realm Masters become exploitable ruins containing possible treasures and benefits. 496 498
• Realm Masters are often more likely to form close bonds with Transcendents than with fellow Realm Masters, who uniquely threaten their survival. 498

Scale and Resilience

• The Sea of Worlds continually grows as more Realm Master worlds merge into it, and some Realm Masters envision it eventually rivaling or replacing the Great Universe. 484 508
• Its scale and regenerative capacity prevent even Sovereigns from completely destroying it through attrition, despite the Sea of Worlds being lower in power level than a Third Realm Sovereign. 528 538
• A Third Realm Sovereign can nevertheless target and destroy an individual Realm Master within the Sea of Worlds. 528

History

Primordial Era and the Severed Heavenly Stairways

During the Primordial Era, Immortal Realm powerhouses descended into the Sea of Worlds from the Heavenly Realm and competed for an unknown treasure or inheritance. The Heavenly Stairway was later severed for unknown reasons, beginning an “Immortal Banished” era in which Immortals became exceedingly rare. 375

A restored Heavenly Stairway discovered in the Primordial Cave Mansion later allowed Heavenly Realm powerhouses to return. Huilong Immortal conscripted Supreme Ancestor Realm cultivators through the Ascension Alliance, Supreme Sacred Hall, Heavenly Realm Association, and Secret Alliance, while several Heavenly Immortals caused widespread slaughter around the Kunwu Realm. 375

Lu Changsheng's First Entry

After reaching the peak of the Heavenly Saint realm, Lu Changsheng entered the Sea of Worlds under the Ancient Mansion Martial Ancestor's protection. He regarded it as “vast,” “magnificent,” “mysterious,” and full of “infinite possibilities,” while immediately experiencing its lethal erosion. 318

His later travels revealed that worlds may be separated by years of travel even for Ancestor Realm experts. The journey from the Immortal Martial Palace to the Kunwu Realm took three years. 320

Immortal Conflict

Following Lu Changsheng's ascent to the Heavenly Realm, he returned directly to the Sea of Worlds by using his clone as a coordinate and forcing open a stable spatial passage through the spatial torrent. 406

At the time of his return, Heavenly Realm Immortals were contesting control of the Sea of Worlds while searching for opportunities left by an ancient Golden Immortal. The Myriad Immortal Alliance had become the dominant force, attempting to monopolize its resources. 406

Lu Changsheng subsequently used spatial traversal and top-tier Insight to reshape the Sea of Worlds within his Illusory Realm, intending to use its complete structure to strengthen that divine ability. 413

Recognition by Realm Masters

After Lu Changsheng transformed his Illusory Realm into a True Realm, he merged it into the Sea of Worlds and became a true Realm Master. 496

During his later Dimension Ascension, the Sea of Worlds expelled Lu Changsheng's spiritual imprint and repelled his True Realm. Lu Changsheng concluded that his ascended True Realm had risen to a level comparable to the Sea of Worlds, forming a separate, controllable “small Sea of Worlds.” 522

Notable Inhabitants and Visitors

• Tian Wu Chi — A Giant Spirit Tribe lifeform from the Sea of Worlds who served as the living seventh-floor Tower Spirit of the Tongtian Tower. 311
• Shang — A Turbid Dragon Clan lifeform from the Sea of Worlds and the ninth-floor Tower Spirit; he states that the ninth floor imitates Sea of Worlds space. 313
• Giant Axe Immortal — An Immortal Realm powerhouse native to the Sea of Worlds who unsuccessfully fought Heavenly Immortals after attempting to enter the Heavenly Realm. 376
• Lu Changsheng — Initially entered as a protected Heavenly Saint, later returned as a Heavenly Immortal and eventually merged his True Realm into the Sea of Worlds as a Realm Master. 318 406 496

Trivia

• The Sea of Worlds is sometimes visually compared to a giant bubble, while each Realm Master world within it appears as a smaller bubble. 496 503
• A Realm Master's world can fail and collapse during construction; many broken worlds in the Sea of Worlds are the remains of such failures rather than the aftermath of battle. 500
• The Sea of Worlds' immense scale is the principal reason Sovereigns cannot fully overcome it, even though Sovereigns possess higher-level power. 538