Yuki

Biodata

Feature	Value
Name	Yuki Sorajima; usually called Yuki (由基) 226 331
Alias(es)	Taiyi; Li Dan of “Head Hunters”; Civilian Superman Rod 365 493 597
Species/Race	Human, with the Demon Possession bloodline 142 255
Gender	Male 2 44
Affiliation	Founder and authority holder of Thorny Rose; cooperates with the Return Faction. His Player panel nevertheless lists Faction: None 231 294 551
Occupation/Role	Reincarnation Game Player; first-year medical student; Pathfinder/Pioneer 5 296 587
Status	Alive; preparing to lead his allies through the conflict surrounding their return 600
First Appearance	Chapter 2, the earliest supplied appearance 2

Power Progression

Physical attributes, skill grades, item levels, and overall combat evaluations are separate measures. Yuki’s overall evaluation can also be temporarily inflated by special equipment 142 293.

Stage / Realm / Level	Chapter	Notes
Human physique — Excellent	37 45	His physique is comparable to a professional athlete’s; Reinforcement Magecraft supplies an additional physical boost.
Physical specialization	45	Spends one Specialization Point on fitness, improving speed, strength, endurance, and recovery.
Vestment of the Unknown — storage unlocked	46 50 96	Upgrades his Ego Trait, gaining a memory slot for a useful draw; the later panel identifies it as LV2.
Reinforcement Magecraft — Proficient	46 59	Can concentrate reinforcement on a particular body part or localized concept more efficiently.
Demon Possession — Mastered; Demon Heart unlocked	88	Invests two Enhancement Points and an acquired arm. Demon Heart feeds on souls and converts them into energy.
Human physique — Extraordinary	96	Confirmed on his post–Demon Hospital panel.
Reinforcement Magecraft — Excellent	102	Can reinforce several body parts simultaneously, combining speed, vision, and cutting power.
Firearms Mastery — Proficient	137	Spends one Enhancement Point immediately before confronting a stronger enemy.
Human physique — Transcendental	142	Invests four Specialization Points in physical attributes.
Ego Trait — LV3	142	Invests two Specialization Points; draws a positive Mystic Code once per Dungeon cycle and retains one storage slot.
Overall evaluation — Transcendental II	142	Reassessment follows his physical and Trait upgrades; his build now covers reconnaissance, mid-to-close-range combat, and anti-energy defense.
Demon Possession — further upgrade	159 255	Invests a Bloodline Object and four Enhancement Points. Regenerative Tail is subsequently documented as part of his bloodline.
Reinforcement Magecraft — Master	190	Gains a fuller understanding of conceptual reinforcement, extending its effects beyond ordinary material properties.
Demon Martial Arts acquired	195	Obtains Wu Raian’s integrated fighting techniques, addressing his lack of supernatural combat technique.
Overall evaluation — Transcendental IV	222	Specialization spending raises him from Transcendental III to IV, the peak described as reachable in reality.
Demon Possession — LV4; Monster I	222	Consumes the Pain Engine and eight Enhancement Points. Unlocks Blood-Burning Heart and enters the Monster stage.
Vitality Shift — Master	255	Invests six Enhancement Points, pairing the skill with regeneration and Blood-Burning Heart.
Soul Furnace domain — item fusion	288	Integrates other Chaos Items’ abilities to a limited extent, reducing their side effects by half within the domain.
Physical attributes — LV8; Monster III	293	Invests sixteen Specialization Points. Receives a Monster III evaluation without relying on temporary special-item boosts.
Demon Possession — Insect Demon Armor; Monster IV	316	Uses the King Insect Carapace and sixteen Enhancement Points, substantially improving defense.
Hunter’s Snare — Arcane Grade, LV5	322	Upgrades the enemy-binding item after winning the War Tower battle.
Ego Trait — LV4	349	Spends four Specialization Points. Can add two keywords to guide a positive Mystic Code draw.
Moonlit Ghost Step — Mastered	378	Uses Moon Monster Essence and four Specialization Points to inherit Kokushibo’s spatial movement skill.
Soul Lamp — Dark Night Tide resistance	398	Absorbs Ashura Rhinoceros Beetle’s soul, enabling stealthy movement within the tide.
Soul-focused Epic metamorphosis	405	Chooses a transformation that connects his skills and items through soul power rather than specializing solely in physique, items, or demon bloodline.
Truth’s Eye (Incomplete) acquired	431	Gains the special skill after infiltrating and attacking Hundred Eyes of True Knowledge.
Immortal Crystal acquired	471	Gains freely shapeable, self-repairing protection with high physical and energy defense.
Physical attributes — LV9	484	Confirmed among his gains from the Race Game.
Epic Metamorphosis — War God Plunder	484	Incorporates the War God lineage, allowing temporary use of the dead’s abilities through continued energy supply.
Ego Trait — LV5	484	Spends eight Specialization Points. Conceptual Craft Essences become reusable, with use counts determined by their combat strength.
Reinforcement Magecraft — Legendary	484	Spends eight Enhancement Points; gains wide-area application and reduced cooldown during burst use.
Void Alchemy — Master	484	Invests four Enhancement Points and begins planning Legendary advancement through his Stand User.
Overall rank — Epic III	485	Confirmed after his Dungeon return.
Total Annihilation unlocked	584	Acquires the skill representing Thorny Rose’s authority.
Physical attributes — LV10	590	Spends sixty-four Specialization Points to reach the current physical-attribute ceiling.
Hunter’s Blunderbuss — Abyss Grade	590	Uses the Kindling Crown and twenty-four Specialization Points to upgrade his longtime primary weapon.

Background / History

Yuki is a transmigrator whose knowledge of familiar fictional characters helps him identify potential allies and threats. Before becoming powerful, he relies on preparation, adaptability, and ordinary combat skills; he is also identified as a first-year medical student 5 35 51 173.

His knowledge is useful but incomplete. He recognizes the Kure Clan’s distinctive eyes without recognizing the individual Player, and later admits that he originally invented the name Taiyi during a bluff rather than constructing a consistent background for it 173 196.

Appearance

• Black hair: Repeatedly described as a black-haired youth or young man 2 369.
• Early combat gear: Uses a tactical vest, helmet, military boots, firearms, and blades during Bloodthirsty Red Moon 24 29 36.
• Military uniform: Wears a crisp black uniform while working with the Defense Force 255 268.
• Disguises: Uses the Fool’s Mask to become a blond, blue-eyed young man 322.
• Visible power effects: Reinforcement Magecraft produces luminous circuits, while a bloodline upgrade releases red Blood Mist from his body 35 59 222.

Personality

Yuki is methodical under pressure. He checks routes, ammunition, and escape options even when surrounded by enemies, and he prepares retreat plans rather than letting the pursuit of a high quest rating dictate every decision 29 36 137. His preferred strategy is to choose the battlefield and exploit an opponent’s habits, information gaps, or assumptions 156 266 294.

He enjoys becoming stronger and is willing to take substantial risks for substantial rewards. During his first Dungeon, he grows excited by the Game’s winner-takes-all structure; later, his increasing power makes him more willful and less concerned about hostile Players’ lives 35 351. His ruthlessness is selective: he refuses to expend trustworthy allies merely to weaken an enemy and rejects killing Mai as a means of obtaining the Divine Torch 347 480.

His ambition is ultimately personal rather than imperial. He wants to return home with his companions, not rule every faction or become an isolated, perfectly rational powerhouse 222 226 493. Ordinary life with his team remains worth protecting even after he becomes capable of challenging the Game 432 487.

Away from battle, Yuki is teasing, flirtatious, and openly lecherous. He proposes that Mai and Hayasaka become his “wings,” makes extravagant declarations to Mai, and repeatedly provokes Kaguya’s jealousy or irritation 44 228 298 485. His companions’ affection and criticism help preserve the ordinary, independent Yuki beneath his increasingly complicated identity 349 355.

Abilities & Skills

Vestment of the Unknown

Yuki’s Ego Trait generates vestments or Conceptual Craft Essences whose usefulness initially depends on chance. Player panels also call the Trait Unknowner’s Mystic Code 45 50 142.

• Storage: Gains one memory slot, allowing a useful draw to be saved for a planned encounter 50.
• Positive draws: At LV3, draws a positive Mystic Code once per Dungeon cycle 142.
• Keyword guidance: At LV4, can add two keywords; later requests a draw using Teleportation and Location 349 591.
• Multiple uses: LV5 removes the earlier one-use limitation, though use counts depend on the Craft Essence’s strength 484.
• Latency field: “Your Latency Is Too High” makes his appearance seem delayed to observers; he uses it against the insect swarm 231 279.

Reinforcement Magecraft

Reinforcement Magecraft enhances physical performance and, at higher mastery, concepts such as sharpness, sturdiness, and penetration 59 190 514.

• Body reinforcement: Enhances cutting force, speed, dynamic vision, and eyesight 59 102 116.
• Simultaneous enhancement: Excellent Grade permits multiple body parts to be reinforced at once 102.
• Concept enhancement: Can make cloth harder than steel or fingers function like a blade 190.
• Weapon forging: Permanently reinforces a Tachi’s sharpness and hardness without adding side effects 63.
• Legendary application: Supports wide-area use and improved burst-use cooldown 484.

Demon Possession

Demon Possession supplies supernatural perception, soul-powered regeneration, and an internal energy core. Its stated drawback is the intensification of negative statuses and bodily mutations 88 255.

Component	Function
Demon Eye / Devil’s Vision	Sees the supernatural world; later permits observation of spiritual and material substances 88 293.
Demon Heart	Feeds on souls and converts them into energy for the body 88 255.
Regenerative Tail	Consumes soul energy to rapidly repair injuries 255.
Blood-Burning Heart	Improves energy efficiency by burning soul energy; received damage intensifies the burn 255.
Insect Demon Armor	Defensive mutation obtained through the King Insect Carapace 316.

• Counters Pan Zi’s Soul Hounds during their factory battle 118.
• Helps Yuki understand and predict Akaza’s attacks 266.
• Scales with the original body’s strength: becoming a demon does not replace the importance of physical attributes 591.
• Combining it with the Chainsaw Sword can rapidly consume Quiet Dew’s limited supply 63.

Soul-Focused Epic Metamorphosis

Yuki chooses soul power as his core because it supports his bloodline, weapons, and other skills at once 362 405.

• Void Conversion: Converts abyssal aura into soul energy 514.
• Soul Extraction: Works alongside Void Conversion and War God Plunder in his Epic build 484.
• War God Plunder: Takes abilities from the dead for temporary use; sufficient energy can maintain them indefinitely 484.
• Build integration: Addresses the energy demands of Demon Heart, Blood-Burning Heart, and Regenerative Tail 405.
• Stand User compatibility: Plundered abilities can be split off to his Stand User 484.

Furnace Domains and Necromancy

Yuki’s Furnace system combines battlefield control with the abilities of installed items 288 314.

• Soul Furnace: Partially fuses Chaos Item abilities while halving their side effects 288.
• Night Furnace: A space-stripping domain used to force Ashura Rhinoceros Beetle into a battle on Yuki’s terms 398.
• Enemy confinement: Hunter’s Snare binds targets inside the domain, though sufficiently powerful enemies can break free 293.
• Necromancy: Turns enemy corpses against their surviving teammates during the Daybreak confrontation 353.
• Scaling cost: Adding and upgrading numerous installed items becomes increasingly expensive 314.

Martial Arts and Spatial Movement

Yuki initially compensates for ordinary fighting technique with superior strength and reinforcement. Demon Martial Arts gives him the specialized techniques needed against comparably strong enemies 195.

• Demon Martial Arts: Includes Lion’s Frenzy, Falling Fang, and Instant Blade among Wu Raian’s integrated techniques 195.
• Meteor: A secret art that becomes stronger as combat continues, used against Akaza 266.
• Moonlit Ghost Step: A spatial movement skill inherited from Kokushibo’s evolved Moon Breathing 378.
• Advancement limit: Moonlit Ghost Step requires fusion with a higher-tier spatial teleportation skill to reach Legendary 484.

Recovery and Alchemy

• Vitality Shift: Develops into a Master-level recovery skill. Legendary advancement requires ten successful battle activations, each triggered by a fatal wound 255 484.
• Void Alchemy: Materializes energy into objects, including a hundred-meter spear 514.
• Alchemy advancement: Legendary progression requires one thousand successful uses in battle; a failure resets progress 484.
• Stand User training: Yuki plans to use a substitute that can die in his place while contributing skill experience to him 484.

Analysis, Deception, and Leadership

• Enemy analysis: Tests Adam through passive defense before explaining his ability and changing the team’s attack plan 207 208.
• Undercover operations: Exploits Yadu Town’s trust in undercover agents by using Rick as an information source 115.
• Identity manipulation: Impersonates Nagumo Miyabi and later maintains the Li Dan and Rod identities to misdirect opponents 152 365 493.
• Team development: Recommends upgrades around each companion’s strengths rather than making everyone copy his all-rounder build 215 271 294.
• Contingency planning: Sets several possible levels of benefit so that an enemy response does not invalidate the entire operation 569.

Special Skills and Authority

• Immortal Crystal: Freely shaped, self-repairing material with strong physical and energy defense 471.
• Orc King: Supplies a passive physical-output benefit that becomes more valuable as his base attributes increase 590.
• Truth’s Eye (Incomplete): Acquired after his attack on Hundred Eyes of True Knowledge; its detailed function is not supplied 431.
• Outpost authority: Replays past events, issues rules through Pathfinder authority, and later distributes suppression authority among his team 296 350 586.
• Unusual faction permissions: His anomalous status suggests access to other factions’ teams, contracts, and Outposts; his companions agree to keep it secret 231.
• Total Annihilation: Represents Thorny Rose’s authority 584.

Equipment / Weapons / Items

• Hunter’s Double-Barreled Blunderbuss — Primary weapon since The Bystander Is Blind. Progresses through repeated forging to Abyss Grade using the Kindling Crown 142 190 590.
• Demon-Breaker Longsword — Evolved from his early long blade. Later serves mainly as an anti-energy defensive weapon and can deploy multiple energy-reflecting shields 137 142 255 314.
• Chainsaw Sword +1 — Early Chaos Grade greatsword that requires a warm-up period and eventually turns accumulated slaughter excitement into exhaustion 37 45.
• Reinforced Tachi — Sharper, harder backup blade with no side effect, used when the Chainsaw Sword would consume too many recovery resources 63.
• Phantom Twin Blades — Transcendental Grade weapons with illusion abilities, selected to replace the longsword’s offensive role 255 294.
• Bloodblade — Arcane Grade weapon that later struggles to withstand stronger clashes 349 410.
• Quiet Dew — Purifies side effects. Its supply takes eight hours to refill; later upgraded to Arcane Grade 37 63 349.
• Hunter’s Snare / Hunter’s Trapping Net — Constrains enemies within his domain; upgraded to Arcane Grade, LV5 293 322.
• Fool’s Mask — Supports disguises and helps conceal the connection between Yuki and his companions 322 330.
• Witch God’s Soul Crystal — Suppresses Shinomiya Oko’s Causal Instant Death and Sadako Yamamura’s curse-killing ability 353 369.
• Future Diary — Initially appears to be a script-type item. Yuki interprets its “Survive!!!” entry as a warning from Taiyi 354 355.
• Torch of the Gods — Reincarnation Item obtained from the Race Game; creates rule-based spaces and resonates with other Reincarnation Items 484.
• Demon God Statue — Reincarnation Item that magnifies desires and twists wills. Yuki later activates it as a plane-wide psychic attack 584 597.
• Bound black blade — Bears a connection to his search for the truth; testing shows that only Yuki can lift it 225 362.
• Early utility items — Distortion Kaleidoscope, Soil-Offering Contract, and Infinite Rope appear on his first post-Dungeon panel 45.

Relationships

• Mai Sakurajima — Early survivor, teammate, and romantic partner. She asks him to survive, helps confirm his independent identity, and shares a kiss with him; she also maintains the team’s household 199 290 298 355.
• Hayasaka Ai — Early survivor, student, teammate, and romantic partner. He returns to rescue her in Bloodthirsty Red Moon and later calls her his eldest disciple and the team’s secondary damage dealer 40 289 290 359.
• Kaguya Shinomiya — Teammate whom he protects because of both their shared experience and her bond with Hayasaka. Their relationship includes teasing, tactical cooperation, and her jealousy over his other relationships 150 151 432 485.
• Shiina Hiyori — Analyst and assistant. Supplies maps, coded intelligence, and Dungeon guidance; Yuki increasingly recognizes her independent skill-planning ability 245 248 318 436 587.
• Frieren — Teammate welcomed into Thorny Rose. Trusts his battle instructions and notices his distraction during the Judge crisis 298 315 331.
• Shiki Ryougi — Central ally in the effort to leave the Game. Advises him on Epic advancement and supplies the experience and connections his rapid growth has not allowed him to accumulate 362 551 552.
• Mena Ryougi / Mona — Shiki’s daughter and Yuki’s contracted ally. Accompanies his missions, becomes increasingly attached to him, and assists with communications and preparations 364 383 425 586.
• Ayanokoji Kiyotaka — Intelligence partner and collaborator in Thorny Rose’s administration. Initially understands Yuki as the contact of a powerful organization rather than its hidden central figure 151 350 486.
• Yomi Isayama — Demon Extermination Squad ally. Helps connect him with her faction, invites him to its Outpost, and facilitates later joint operations 325 347 364.
• Kento Nanami and Kyojuro Rengoku — Demon Extermination Squad allies. Nanami values his decisiveness; Rengoku openly wants to learn from him 316 362.
• Tyrant — Temporary teammate who declines permanent membership because following Yuki is dangerous, but offers assistance in future Game encounters 91.
• Moon Bow and Rick — Temporary allies in Yadu Town. Moon Bow develops trust in him, while Rick supplies information from within the town’s patrol system 115 132.
• Johnny Silverhand — Information source and recurring ally who explains aspects of the Game and later offers free body modifications 268 290 330.
• Elysia and the Savior faction — Allies in the attempt to escape the Game. Yuki’s familiarity with Elysia strengthens his willingness to cooperate, and she helps broaden the alliance 496 568 569.
• Iori Kitahara — Friend who chooses to remain on equal footing with Yuki despite learning his identity and power 586 587.
• Shinomiya Oko — Persistent enemy whose pursuit threatens Yuki’s companions and secrecy. His attempt to bargain through Kaguya fails, and Yuki defeats his core team 331 351 353.
• Taiyi — Initially a name Yuki invents for a bluff. Later evidence leads him to suspect a deeper connection involving his fate; he ultimately publicly reveals himself as Taiyi 196 349 355 597.

Story Role / Major Arcs

Bloodthirsty Red Moon

Yuki begins as a cautious newcomer who distrusts unknown people and monsters alike. He develops an early partnership with Mai and Hayasaka, survives a devastating explosion, and learns to lead increasingly dangerous escape operations 2 6 24 36.

His relationship with veteran Player Li Dan becomes adversarial enough to require a contract. Nevertheless, the two cooperate against the Giant blocking the Ancient Castle’s exit. Yuki also risks returning through the tunnel to save the injured Hayasaka 34 40 42. After the clear, Mai and Hayasaka acknowledge that his strength carried them through the ordeal 44.

Demon Hospital

Yuki expands Demon Possession by acquiring Demon Heart, then completes the S-rank team quest. His combined rewards include two bloodline skills, a Chaos Item, nine Enhancement Points, and two Specialization Points 88 91.

The victory does not persuade every ally to follow him permanently. Tyrant and Hiyori decline to join his team at that point, recognizing the danger associated with his path 91.

Yadu Town and The Bystander Is Blind

Yuki uses Rick’s undercover position and Moon Bow’s archery to penetrate Yadu Town’s nighttime defenses. His investigation leads to Pan Zi’s Soul Hounds, an underground trap, and a confrontation with a purple-robed priest 115 116 118.

By the Dungeon’s end, he has established a broader combat system and upgrades himself to Transcendental II. Former temporary teammates become wary enough to make clear that they do not want to become his enemies 142 143.

Shinomiya Conflict and Calamity of Blood

Back on Earth, Yuki links Kaguya’s protection with Ayanokoji’s operation against their shared enemies. He impersonates Nagumo Miyabi, fights Shinomiya Hongzheng, and turns random-mission rewards and seized items into further upgrades 150 151 152 156 159.

During Calamity of Blood, he combines the team’s discoveries to understand the city-sized death arena. Against Adam, he deliberately tests the enemy’s behavior before directing a revised attack 173 198 207 208. The survivors subsequently enter an unfamiliar Outpost and discover new faction and point mechanics, raising fears that their former lives may be inaccessible 214.

Borderlands and Global Insect Calamity

Yuki uses Borderlands trading to strengthen both himself and his companions, enters Monster I, and names his faction Thorny Rose. His personal faction status remains anomalous 221 222 231.

In Global Insect Calamity, he works with the Defense Force while investigating the swarm and the Fire Seed. He coordinates reconnaissance near Emerald Star City, fights Akaza, and contests Kamui’s attempt to claim the Fire Seed 241 262 266 279. His return brings substantial growth, followed by a sixteen-point physical upgrade to Monster III 286 293.

Wizard’s Tower and the Judge Pursuit

Yuki dismantles the Witch Spirit’s strategy in the Tower of Asura, upgrades Demon Possession with Insect Demon Armor, and receives the tower’s authority. Cooperation with the Demon Extermination Squad develops alongside his continuing exploration 315 316.

The Judges’ interest makes his invented Taiyi background increasingly dangerous. He conceals his companions’ connection to him, confronts the possibility that his identity is tied to Taiyi, and eliminates Shinomiya Oko’s core team 330 331 349 353. The Future Diary then shifts his understanding: he reads it as a warning and concludes that Taiyi is not simply inhabiting his body 354 355.

Epic Development and Cross-Faction Alliances

Following Shiki Ryougi’s advice, Yuki builds toward a soul-focused Epic transformation rather than taking the most obvious physical or bloodline route. He joins faction warfare with the Demon Extermination Squad and Mena, acquires Moonlit Ghost Step, and later uses Night Furnace against Ashura Rhinoceros Beetle 362 364 378 398 405.

His operations expand from Dungeon survival to disrupting the Judges themselves. He attacks Hundred Eyes of True Knowledge and escapes, while maintaining his peaceful life with the team as the reason to keep taking risks 431 432.

Race Game

Yuki manipulates alliances among the participating races to secure humanity’s position and pursue the Divine Torch. He refuses a path that would require killing Mai to claim it 464 480.

His rewards include Torch of the Gods, War God Plunder, new special skills, LV9 physical attributes, and major Trait and skill upgrades. His subsequent rank is confirmed as Epic III 484 485.

The Path to Freedom

Yuki proposes severing an Outpost’s connection to the Reincarnation Game and coordinating a decisive conflict that his alliance can survive. Shiki and Elysia help gather allies while he disperses the Judges’ attention through experiments, false information, and overlapping operations 551 552 569.

After obtaining the Demon God Statue, he reveals that Thorny Rose can return to Earth, distributes suppression authority, and tells its leaders that he is the Pioneer. He requests one thousand Players to expand their personal spaces and uses planted backdoors to prepare a trap 584 586 587.

At Forgotten Hidden Jianghu, Yuki cuts off enemy escape routes, publicly identifies himself as Taiyi, and activates the Demon God Statue in a plane-wide psychic attack that opens the path to freedom 596 597. His closest companions then gather around him, prepared to stake everything on his judgment 600.

Notable Quotes

“You think I wanted to? You can't rely on anyone in this game. If you want to live, you have to fight for it yourself...” 24

“We should be the ones deciding where a battle takes place. Don't worry, I'm very good at that.” 294

“You can have many friends, but you still have to go home.” 286