Cheng Luoyi

Biodata

Power Progression

Background

Cheng Luoyi grew up in the same orphanage as Lin Dong and Sun Xiaoqiang. As a child, she was remembered as fair-skinned and doll-like, often carrying a teddy bear. She and Lin Dong were close: they folded paper, drew pictures, and played games together. 2

The orphanage director later identified her as having a mental disorder. At age twelve, Cheng bit off half of another boy’s face and was sent to a psychiatric hospital; Lin Dong did not see her again for ten years. 2 20 During her institutionalization, she developed self-harming tendencies, leaving her right arm covered in scars. 21

After the apocalypse, Cheng Awakened early and became the Jiangbei shelter’s No. 001-ranked combatant. Her past pain became the basis of her ability, Deadly Agony, which converts suffering into greater physical power. 21

Cheng later fought through successive conflicts with the Black Scorpion Organization, mutant monsters, Zombie Kings, and the Blood Clan. Her repeated use of Deadly Agony pushed her strength from an apparently ordinary B-Rank state to the Double-S Rank tier, but also established a self-destructive pattern of deliberately approaching her Pain Value limit. 49 495 502 541

During the final conflict against the Blood-Red Count, Cheng destroyed her own Crystal Core while landing a lethal strike. She subsequently became a zombie and lost her memories, retaining only instinctive trust toward Lin Dong and faint remnants of her childhood self. 643 650 652

Appearance

Cheng is an exceptionally beautiful young woman with long, straight black hair, blunt bangs, very fair skin, and large dark eyes. Her eyes are frequently described as hollow or emotionless, reinforcing her doll-like appearance. 20 46

• Wore a white-and-blue-striped psychiatric hospital gown during an early rescue operation. 21
• Keeps her scar-covered right arm wrapped in bandages. 21
• Uses a wristband that displays her current Pain Level. 50
• Her expression generally remains calm and blank even while injured or killing opponents. 21 50
• Commonly carries one or more long blades across her back; during the Black Scorpion conflict, two large swords were strapped to her back in an X-shaped arrangement. 83
• Her later Meteorite Blade is embedded with a powerful Lightning Crystal Core, allowing blue lightning to wrap around its edge. 577
• Following her transformation, her face and body retain visible battle scars, while her behavior becomes more animalistic and instinct-driven. 650

Personality

Cheng is cold, practical, and unsentimental in combat. During a university evacuation, she leaves behind a fallen survivor rather than endanger the group; when another student protests, she throws him outside to the zombies as an example. 21 She views survival decisions as calculations rather than moral dilemmas.

Her apparent calm conceals a strong attraction to pain, which her ability turns into strength. She shows no visible distress when stabbed and reacts to her old scars with satisfaction. 21 In battle, she is controlled and precise rather than frenzied, even when extracting a Crystal Core from a corpse herself. 50

Despite her isolation and stated hatred of the world, Cheng retains warmth toward her orphanage companions. Seeing Lin Dong again causes her heartbeat to quicken after years of emotional numbness, and she becomes unusually talkative while reminiscing with him. 46 47 49

Cheng’s pragmatism extends to hostage situations. She kills Yuanyuan to increase her Pain Value, refuses Song Yang’s attempt to use hostages as leverage, and later advances against Gu Wei despite Chen Ming being held captive. 51 156 She does not consider obedience to superiors or conventional morality binding when they conflict with her own judgment. 51

She is also bluntly dismissive of idealistic rhetoric. When Bai Qi attempts to recruit her by invoking humanity’s future and her “Light of Humanity” reputation, Cheng immediately recognizes the appeal as moral blackmail and takes his resources without joining his cause. 477

After becoming a zombie, Cheng loses her former personality and memories, behaving as a hungry, aggressive creature toward most people. However, she immediately becomes docile before Lin Dong, and her effort to pick a cherry for him at their ruined orphanage suggests that deeply buried memories remain. 650 652

Abilities & Skills

Deadly Agony

Cheng’s Awakened ability strengthens her in proportion to the pain she endures. Its upper limit is described as extremely high. 21 The ability is also rendered as Deadly Pain in later accounts. 50

• Allows her to deliberately accept injuries instead of avoiding them. 21 49
• Raises her physical strength as her Pain Level increases. 50
• Lets her break an alloy dagger after allowing it to cut into her hand. 50
• Enables her to overpower Song Yang’s metallic body after enduring both a heavy punch and psychic assault. 50
• Requires her to suffer real physical or mental pain to build power. 21 50
• Is monitored by a researcher-made wristband connected to her pain nerves. At 100%, she would reach maximum power but potentially die. 51
• Greatly increases the activity of her cells at higher Pain Values, allowing rapid wound healing and resistance to restraint effects. 121 495
• Lets her use the pain from Lightning Crystal Core energy to raise her Pain Value deliberately. 101
• Allows her to convert suffocation, poisoning, infection, physical injury, and mental assaults into combat power. 102 318 346 422
• Awakens a latent “Killing Factor” at extreme levels of pain, enabling her to break Long Fei’s Shadow Garrote Technique and Song Wenxi’s mental restraint at 75%. 495
• Leaves her increasingly unstable near 95%, where her body sways and her conscious thought begins giving way to combat instinct. 502

Lightning-Enhanced Swordsmanship

Cheng channels Lightning Crystal Core energy through her blades, combining her speed-based fighting style with powerful electrical attacks. 75 101

• Can move too quickly for ordinary opponents to follow, appearing as a streak of lightning. 75 121
• Uses electrified slashes to cut through defensive barriers, including Earth Walls, Ice Walls, roots, and enemy armor. 101 318 344
• Beheaded the Ghost Infant Zombie King in a single accelerated strike after her Pain Value rose. 121
• Damaged Long Fei with lightning transmitted through her blade and later pursued him despite his S-Rank Shadow Control. 445 446
• Wields the hundred-jin Meteorite Blade without difficulty due to her enhanced strength. 507
• Uses an S-Rank Lightning Crystal Core in her newer Meteorite Blade, allowing her to decapitate the Ghost Lizard Zombie King in one strike. 577

Combat Ability

Cheng is an experienced close-range fighter who uses decisive, lethal strikes.

• Kills two charging zombies by smashing their skulls with a fire axe. 21
• Snaps Zhang Xu’s neck with one strike after he stabs her bandaged arm. 21
• Uses a broken dagger to kill a Crystal Core Awakened with a strike to the temple. 50
• Extracts Crystal Cores directly from defeated enemies. 50
• Remains composed while facing multiple Black Scorpion Awakened. 50
• Defeats Spider Woman by cutting her in half at the waist and splitting open her head to retrieve its Crystal Core. 75
• Breaks free from a Water Prison, Earth Walls, a mental assault, and a speed-type ambush before killing Qian Feng’s elite squad. 318
• Fights Li He, an S-Rank wood-element Awakened, while heavily outnumbered by Black Scorpion members. 343 344
• Cuts through Black Scorpion forces alone, kills Long Fei amid an encirclement, and survives coordinated elemental, shadow, and mental attacks. 495
• Matches the Double-S Rank vampire Zombie King Monroe in direct combat and wounds him before Lin Dong intervenes. 539 541
• Trades a fatal blow with the Blood-Red Count, decapitating him even as his counterattack destroys her Crystal Core. 643

Mental and Infection Resistance

Cheng has repeatedly demonstrated exceptional resistance to supernatural interference.

• Recognizes that Black Nightmare has trapped her in a dream after self-inflicted pain feels incorrect, then confronts the Zombie King within the dream. 253
• Uses the pain caused by Yuanyuan’s Brainstorm to restore her awareness rather than being incapacitated. 50
• Resists an S-Rank Rabies Virus infection from Flying Hound, suppresses the mutation, and nearly decapitates him in retaliation. 422
• Cuts open and drains a Mutant Virus infection caused by Monroe, using the pain to elevate her combat ability rather than succumbing immediately. 540

Equipment

• Fire axe — used during rescue operations against zombies. 21
• Right-arm bandages — conceal extensive self-harm scars and can absorb or expose wounds during combat. 21
• Pain Level wristband — displays the percentage of pain accumulated for her ability. 50
• Alloy blade fragment — taken from an attacker’s broken dagger and used to kill him and retrieve his Crystal Core. 50
• Lightning Crystal Core blade — her primary long blade during much of the early and middle apocalypse, used to channel lightning through her swordsmanship. 75 101
• Toll — a named long blade used by Lin Dong during the factory rescue; it is identified as Cheng’s blade. 85
• Meteorite Blade — a hundred-jin blade loaned to her by Lin Dong after her former Lightning Blade breaks against Blood Princess’s weapon. 498 507
• New Meteorite Blade — a later blade fitted with an S-Rank Lightning Crystal Core, used during the Northern Border operation. 577
• Crystal Core Aircraft — Cheng acquires and uses advanced aircraft from Mount Dongyue for long-range transport and shelter supply operations. 477 513

Relationships

• Lin Dong — Orphanage childhood friend. They were close before Cheng was institutionalized; their reunion after ten years stirs rare emotion in her. She accepts his food and offers him a Crystal Core as repayment. 2 47 48 50 Cheng consistently calls him her friend and defends him when others dismiss him as weak. 85 223 They later cooperate in major battles, with Lin Dong supplying her a Meteorite Blade and intervening against Monroe. 507 541 After Cheng loses her memory as a zombie, she instinctively submits to him; Lin Dong continues seeking a way to restore her memories and takes her to their orphanage in hope of reaching her past self. 650 652
• Sun Xiaoqiang — Fellow orphanage child, shelter rescue partner, and close companion. Cheng frequently corrects his confused remarks but works alongside him on rescue and supply-recovery missions. 20 21 46 He worries for her when she suffers severe injuries and intervenes against the Ghost Infant Zombie King, though he remains baffled by her enjoyment of pain. 121
• Chen Ming — Shelter Awakened who accompanies Cheng’s Black Scorpion mission; he is wary of Lin Dong while Cheng chooses to trust their childhood connection. 47 48 Cheng bluntly dismisses Chen Ming’s romantic rationalizations, but repeatedly fights beside him and protects the shelter team. 156 318
• Zhang Xu — Rogue student Awakened who attempts to force Cheng to remain with him; she kills him after he stabs her. 21
• Song Yang — Black Scorpion minor leader whom Cheng confronts during the KTV assault, blasting him through a wall after her Pain Level rises. 50
• Yuanyuan — Black Scorpion psychic Awakened whose Brainstorm attack intensifies Cheng’s power rather than disabling her. Cheng later kills her to increase her Pain Value. 50 51
• Professor Meng — Mount Dongyue’s chief laboratory director and an expert on extraterrestrial meteorites. Cheng consults him regarding Lin Dong’s stone tablet and later works with him to investigate meteorite materials for advanced blades. 373 513
• Chen Muyan — Jinjiang City’s No. 001 Awakened and a frequent ally. Cheng considers his dramatic behavior excessive, but operates with him against Parasitic Monsters, Black Scorpion forces, and later threats. 219 444 446
• Bai Qi — A Mount Dongyue official who unsuccessfully tries to recruit Cheng into an anti-zombie-tide force. Cheng feigns cooperation, takes a supply-loaded aircraft, and returns to Jiangbei City instead. 372 477
• Long Fei — Black Scorpion leader and S-Rank Shadow Control user. Cheng repeatedly defeats and pursues him; after surviving an earlier encounter through Number 09’s intervention, Long Fei is finally decapitated by Cheng during the later Black Scorpion battle. 444 446 495
• Monroe — Double-S Rank vampire Zombie King who develops a distorted fixation on Cheng and calls her “mother.” Cheng matches him in battle despite infection and severe injuries. 539 540 541
• Blood-Red Count — A Blood Clan leader whom Cheng kills by severing his head, though his simultaneous attack shatters her Crystal Core and precipitates her transformation. 643

Story Role / Major Arcs

Orphanage and Institutionalization

Cheng’s childhood friendship with Lin Dong is established through his orphanage photograph and memories. Her violent incident at age twelve leads to her transfer to a psychiatric hospital, separating the two for a decade. 2 20

Shelter Rescue Operations

As the shelter’s No. 001 Awakened, Cheng leads a rescue mission through a zombie-infested university. She enforces her ruthless survival philosophy, kills the rogue Awakened Zhang Xu, and reunites with Sun Xiaoqiang on the rooftop extraction. 21

Black Scorpion Supply-Recovery Mission

Cheng and Sun Xiaoqiang enter a Five-Star Zombie Nest while searching for the Black Scorpion Organization and the supplies it stole from the shelter. Lin Dong orders Little Eight and the surrounding zombie horde to withdraw, allowing the rescue team to survive. 46 47

Reunion with Lin Dong

Cheng recognizes Lin Dong as her childhood friend and invites him to help search the area. Though Chen Ming’s group distrusts him, she accepts his food and promises to repay him with Brain Cores or Crystal Cores. 47 48

KTV Confrontation

At the Black Scorpion hideout, Cheng confronts a group that mistakes her calm demeanor and “gentle girl” profile for weakness. She uses the pain from a dagger wound to kill a Crystal Core Awakened, gives his Crystal Core to Lin Dong as repayment, and begins fighting Song Yang’s group. 49 50

Cheng’s battle continues as Song Yang’s remaining forces attack in coordination. She endures his metallic punch and Yuanyuan’s psychic assault, then sends Song Yang through a wall and appears before the stunned psychic Awakened. 50 She later kills Yuanyuan, rejects Song Yang’s hostage threats, and prepares to injure herself further before Lin Dong stops her. 51

Ghost Infant Zombie King Battle

During the battle against the Ghost Infant Zombie King, Cheng pushes her Pain Value beyond 50% after being bitten, clawed, and restrained by the Corpse Infant. Her ability accelerates her healing and allows her to decapitate the Zombie King in a single lightning-fast strike. 120 121

Black Scorpion City Infiltration

Cheng leads imprisoned survivors and shelter allies in a counterattack within Black Scorpion territory. She serves as the team’s spearhead, killing low-rank Awakened, breaking Qian Feng’s coordinated Earth Wall, Water Prison, mental, and speed-type assault, and severing Qian Feng’s arm. 311 318

When Black Scorpion deploys over a thousand members, Cheng duels the S-Rank wood-element Awakened Li He while bearing the majority of the battlefield pressure. After Cai Yuan traps her in an S-Rank Water Prison, her Pain Value rises to 78%, allowing her to escape and eliminate Cai Yuan’s group. 343 344 346

Mount Dongyue and Meteorite Research

Cheng travels to Mount Dongyue Refuge to investigate Lin Dong’s patterned stone tablet with Professor Meng, learning of the Quicksand Town meteor shower and the potential value of meteorite materials. 372 373 She later helps recruit research personnel and acquire resources for developing meteorite-based weaponry. 477 513

Renewed Black Scorpion Conflict

Cheng clashes with Black Scorpion leaders Long Fei and Liu Baiyue after identifying their organization’s members. She repeatedly breaks Long Fei’s weapons and restraints through pain-amplified strength, though Number 09 temporarily freezes her to permit his escape. 444 445 446

Long Fei is later lured into a trap. Cheng and Lin Dong cooperate for the first time, combining her sword strike with Lin Dong’s overwhelming pressure, but Number 09 again prevents Long Fei’s immediate death. 492 During the full Black Scorpion assault, Cheng deliberately endures barrage fire, Song Wenxi’s mental barrier, and Long Fei’s Shadow Garrote until her Pain Value reaches 75%, then decapitates Long Fei amid his own forces. 495

Vampire Corpse Nest Battle

Cheng joins resistance forces against vampire overlords and massacres vampires with her Meteorite Blade. She then confronts the Double-S Rank Zombie King Monroe, wounds him, endures infection by his Mutant Virus, and fights him to a standstill at Pain Values exceeding 90%. 539 540

Cheng remains in combat with Monroe at roughly 95% Pain Value until Lin Dong returns from infiltrating Monroe’s castle and ambushes the vampire leader. Her performance confirms her status as a Double-S Rank human combatant. 541

Northern Border Operation

Cheng travels to the Northern Border with her group to deliver a blade to Lin Dong and investigate regional abnormalities. Upon arrival, she kills the Ghost Lizard Zombie King’s slime-covered subordinate in a single strike with her new Lightning Meteorite Blade before locating Lin Dong in Miao Xue’s village. 577

Final Battle and Memory Loss

Cheng battles the Blood-Red Count as humanity’s final line of defense. She abandons defense to exchange a fatal strike, decapitating the Count while his blow shatters her Crystal Core. 643

Although Cheng survives by becoming a zombie, she loses her memories and higher cognition. Lin Dong and her companions begin seeking a cure, while Jiangbei City erects a statue in her honor and preserves her blade as a memorial to her sacrifice. 650 651

Months later, Lin Dong brings Cheng to their ruined orphanage. Though she initially shows no recognition, she struggles to pick a cherry from the surviving trees and silently offers it to him, suggesting that her memories of their childhood have not fully disappeared. 652

Notable Quotes

“In the apocalypse, kill the saints first.”
— Cheng Luoyi 21

“I am a gentle girl, afraid of pain.”
— Cheng Luoyi’s shelter profile 21

“Eat it or don't!”
— Cheng Luoyi, echoing Lin Dong’s earlier words 50

“Maybe I'll die.”
— Cheng Luoyi, on reaching 100% Pain Value 51

“Haruki Murakami bears full responsibility.”
— Cheng Luoyi 156

“Are you trying to morally blackmail me?”
— Cheng Luoyi 477

“Now... it’s just right.”
— Cheng Luoyi, after Long Fei raises her Pain Value to 75% 495

Trivia

• Cheng’s “gentle girl” shelter profile sharply contradicts both her pain-based ability and her combat conduct. 21 50
• Lin Dong remembers her childhood smile, in which her distinctive large eyes narrowed into crescent moons. 2
• Her extraction of a Crystal Core reminds Lin Dong of mixing dumpling filling at the orphanage. 50
• Cheng’s Pain Value wristband was specifically made by researchers and connected to her pain nerves. 51
• Her Meteorite Blade weighs approximately one hundred jin, but she can wield it easily. 507
• Jiangbei City later erects a statue of Cheng in its central plaza, placing a Lightning Crystal Core blade before it to commemorate her sacrifice. 651