Liu Dajun

Biodata

History

Transmigration and discovery

Liu Dajun was a financially comfortable, unmarried twenty-six-year-old on Earth when a car accident near Su Mo’s village left him unconscious. His weakened soul entered the Microcosm and occupied an Ultra Empire citizen’s body, while his original body remained alive 5 6 8 12.

The empire discovered him within two minutes of his arrival. Mebius questioned him through the Mind Web, whose linked consciousnesses made concealing information effectively impossible. Liu initially tried to withhold information about Earth, fearing that he might expose his home world to an alien civilization 4 5.

After unsuccessful attempts to return home, he began adapting to the Ultra Empire. Su Mo investigated him for a possible system or other extraordinary advantage, but spared him after confirming that he was an ordinary person 6.

Integration into the Ultra Empire

Learning that Blue Star faced destruction every thousand years, Liu compared its catastrophes with Earth’s dinosaur extinction and flood legends. He proposed that the apocalypse was a test that civilizations could survive—a theory Su Mo explicitly dismissed 5 6 7.

Over the following century, Liu learned the local language, married Zoffy’s younger sister, and had children. He introduced everyday conveniences and delivered speeches explaining the leadership’s preparations, helping unite citizens who had previously been indifferent to the coming disaster. His popularity among ordinary people eventually exceeded Ultra V’s 8 10 11.

Liu volunteered to design the Giants of Light’s appearance, modeling them after Ultraman Tiga. Ultra V approved the designs, and Liu became part of the empire’s leadership circle 8.

Monster disaster and withdrawal

Su Mo responded to the Tiga-inspired giants by introducing five enormous monsters. Liu feared that his design had brought Ultraman’s fictional enemies into reality. When he explained the connection, Original Ultraman punched him, and the leaders examined his mind to verify that he had not acted deliberately 7 8 9.

The giants initially struggled because most had been built for disaster relief rather than combat. Liu explained that warriors could operate their built-in cockpits, allowing Original Ultraman, Zoffy, and other pilots to take direct control 9.

The empire defeated the monsters, but three fortresses were destroyed and eleven damaged. Ultra V cited two hundred million deaths, telling Liu that he understood the incident was unintentional but could not forgive its consequences. Overwhelmed, Liu attempted suicide with a laser gun; Zoffy intervened, ordered him to make amends, and sent him home under guard with his wife watching over him 10.

Liu remained withdrawn at home for thirty years. His increasingly prolonged dazes were initially mistaken for lingering guilt, but were actually caused by his original body pulling his consciousness back toward Earth 11 12.

Historian and duke

The appearance of giant mosquitoes brought Liu back into the empire’s central research work. He identified the creatures as enlarged versions of Earth’s mosquitoes and helped record their characteristics. He also supplied names for later Giants of Light, including Taro, Ace, Leo, and Gaia 11 12.

Ultra V assigned Liu to record the Ultra Civilization’s history in simplified Chinese on durable meteorite tablets. Although presented as an outsider’s historical account, the assignment also prepared Liu to preserve the civilization’s memory after returning to Earth 12.

When told that his original body was still alive because the worlds experienced time differently, Liu insisted on staying. Ultra V recognized him as one of their own but ordered him to survive as the civilization’s “last spark.” He eventually offered Liu a choice: return as a duke and spread Ultra culture, or be publicly condemned for the monster disaster and stripped of his citizenship 13 14.

Escape plan and return to Earth

Liu proposed a third option: use his returning consciousness to locate Earth and establish an escape route for the entire empire. Ultra V accepted, mobilizing the citizens’ biological computers to trace the connection. Liu received his ducal regalia and began returning to his original body 15.

The attempted route to Earth prompted Su Mo to activate World Destruction Mode early. While leaving, Liu saw the colossal destroyer send meteors and monsters toward Blue Star. Su Mo deliberately revealed that the escape attempt had triggered the attack, intensifying Liu’s belief that he had doomed the civilization 15 16.

Liu pleaded for mercy and tried unsuccessfully to warn his friends. His despair produced two tangible Soul Tears, which Su Mo collected before Liu’s soul was pulled out of the Microcosm 16.

Guiding Big Pineapple

Back in his hospital bed, Liu watched Big Pineapple’s livestream to distract himself from his grief. Recognizing submerged Ultra Civilization buildings, he realized that the empire had fallen and another cycle had begun 23.

When Big Pineapple found tablets bearing simplified Chinese, Liu identified himself as their author and proved his knowledge by naming the calendar year and describing the other records. He warned the audience about the world’s destroyer and directed Big Pineapple toward the Ultra Empire’s foremost laboratory for evidence, weapons, and a possible way home. His disclosures drew the attention of governments seeking to protect or capture him 25 26 29.

Liu later guided Big Pineapple through the laboratory and determined that its remaining backup power provided only seven days in which to return to his original time. Giving him this choice reminded Liu of Ultra V’s ultimatum 39.

He also opened the passage Ultra V had failed to complete and used Blue Star’s summons to call for Zoffy and Original Ultraman. Liu gambled on Big Pineapple’s indecision to keep the opportunity open. When Glitter Tiga returned, he understood its message that Original Ultraman had died, but did not explain it to Big Pineapple or the viewers 40 41.

Appearance

• Three-Eyed body: His host body possessed a third eye between the brows, which blinked rapidly when he became agitated during interrogation 5.
• Ducal regalia: During the return experiment, he wore a large scarlet cloak and a medal identifying him as a duke 15.

Personality

Liu initially interprets transmigration through the novels he has read, expecting that knowledge from Earth might help him overcome danger. His immediate discovery overturns those expectations, leaving him frightened and wary of revealing information that could endanger Earth 5.

He becomes deeply attached to the Ultra Empire through his family, friendships, and public work. After nearly two centuries there, he considers it home and resists returning to Earth even when offered a chance to escape the catastrophe 8 11 13.

His sense of responsibility also makes him intensely self-reproachful. He blames himself for both the first monster disaster and the accelerated destruction following his escape proposal, despite Su Mo being the agent behind the attacks. After returning to Earth, that attachment persists through his efforts to preserve Ultra history and reach its surviving warriors 10 16 25 40.

Abilities & Skills

Cross-cultural knowledge

Liu’s principal advantage is ordinary Earth knowledge rather than a personal system or innate supernatural power 6.

• Introduced stools, sofas, buses, and other everyday conveniences to the Ultra Empire 11.
• Used speeches and Earth stories to raise morale and explain the leadership’s work to ordinary citizens 8 11.
• Learned the local language well enough to communicate without a mental link 8.
• Recognized giant mosquitoes through their resemblance to Earth insects 11.

Giant of Light contributions

Liu supplied the Tiga-inspired visual designs; the empire provided the technology used to construct the giants 8.

• Explained how warriors could pilot the giants through their built-in cockpits 9.
• Coined the name Ultra Light for their high-energy beam 10.
• Suggested names for subsequent Giants of Light 12.
• His design role did not prevent the early models from lacking adequate combat systems 9.

Historical recording and laboratory guidance

Liu’s long residence made him a source of practical knowledge about the lost Ultra Civilization 12 26 39.

• Compiled and revised its history in simplified Chinese for reproduction on meteorite tablets 12.
• Identified surviving records and ruins during Big Pineapple’s livestream 23 25.
• Guided Big Pineapple through the foremost laboratory and explained its backup-power limit 39.
• Activated a passage and a summons intended to reach Zoffy and Original Ultraman 40.

Soul Tears

Liu involuntarily produced two Soul Tears when his despair, regret, and resentment reached their extremes. Their creation was an exceptional event, not a documented cultivation breakthrough or controllable technique 16.

Equipment & Associated Items

• Meteorite history tablets — Durable records written in simplified Chinese; surviving examples later established Liu’s connection to Big Pineapple’s world 12 25.
• Laser gun — A newly developed weapon created at his suggestion; Zoffy knocked it away during Liu’s suicide attempt 10.
• Duke’s cloak and medal — Symbols of the status granted to him before his return to Earth 15.

Relationships

• Ultra V — Ruler, patron, and colleague. He admitted Liu into the leadership circle, later entrusted him with the civilization’s history, and insisted that he survive to preserve its memory 8 12 13.
• Zoffy — Closest friend and brother-in-law. Their arguments over Earth stories reflected their familiarity; Zoffy introduced Liu to his sister and intervened when Liu attempted suicide 10.
• Zoffy’s younger sister — Wife and mother of his children. She was tasked with watching him after his suicide attempt 8 10.
• Original Ultraman — Colleague who especially enjoyed Liu’s stories about heroes. He attacked Liu after learning the apparent connection between Tiga and the monsters; Liu later learned of his death 9 10 41.
• Older brother — Earth family member associated with Liu’s company. His calls reached Liu during the return process and helped confirm the difference in time between worlds 12 15.
• Mebius — Developer of the Mind Web and Liu’s initial interrogator 5.
• Big Pineapple — Fellow transmigrator whom Liu advises through livestream comments, providing historical context, laboratory instructions, and a possible return route 25 26 39.
• Su Mo — Creator and destroyer of the Microcosm. He initially spared Liu, later accelerated the empire’s destruction to prevent its escape, and collected Liu’s Soul Tears 6 15 16.

Legacy

• Preserved Ultra history: Liu’s Chinese-language tablets survived the empire and gave Big Pineapple and Earth’s researchers evidence of an earlier transmigrator 25 26.
• Supernatural foundation: Su Mo placed the two Soul Tears on Blue Star as lakes. Later Asura Clan members used water from the Lake of Despair, together with pain, to draw out supernatural power 22 48.
• Limits of that inheritance: Because the Tears were level-three items belonging to someone else, those borrowing their power could reach at most the peak of level two 48.

Notable Quotes

“No! I’m not going back. I’m staying here. I’ve lived here for two hundred years. I’ve spent most of my life here.” 13

“Perhaps—perhaps coming to this world was a mistake. I should never have come here. I should have died long ago!!! I’m sorry, everyone. I’ve doomed you. I’m a sinner against the entire Ultra Empire!” 16