Klein

Biodata

Name	Klein (克莱恩)
Alias(es)	The Fool; The World; Sherlock Moriarty; Gehrman Sparrow
Species/Race	Human; transmigrator from Earth 168 170
Gender	Male
Affiliation	Blackthorn Security Company / Night Watchers; The Tarot Club
Occupation/Role	Fortune-teller; detective; founder and presiding figure of The Tarot Club
Status	Active 657
First Appearance	Chapter 10 10

Power Progression

Stage / Realm / Level	Chapter	Notes
Seer	35, 60	Works as a fortune-teller and recognizes that performing divinations in accordance with his potion’s name reduces its influence. 35 60
Clown	198	Fully digests the Clown potion; his physical ability, running speed, and spiritual intuition improve. 198
Faceless (Sequence 6)	366	Advances after obtaining the Skin Shadow characteristic and other potion materials; gains Shape-shifting. 366

Background / History

Klein worked at Blackthorn Security Company in Tingen alongside Luther, Leonard, and the other Night Watchers. During this period, he guided Luther toward the Acting Method, explaining that acting in accordance with a potion’s name improves compatibility and lessens its influence. He also led Luther through an underground occult market and publicly credited him with preventing Old Neil from becoming an irreversible monster. 35 36

As The Fool, Klein presides over The Tarot Club from above the Gray Fog. His concern over Luther’s pathway and connection to the Aurora Society prompted him to seek information about the organization from Audrey and Alger. 40

After both had apparently died and later returned, Klein and Luther recognized one another beneath Backlund Bridge. They confirmed that both were transmigrators, exchanged their respective circumstances, and resumed cooperating despite mutual caution. 170 172

Operating in Backlund as detective Sherlock Moriarty, Klein investigated Rian Thomas’s disappearance and traced the case to Lanerius. He and Luther pursued Lanerius together; after Luther killed him, Klein fought Leonard, seized Lanerius’s Extraordinary Item, and used Tarot cards to interfere with later divination of the scene. 232 233 243

Luther later identified Klein as The World within The Tarot Club. Klein admitted the identity but kept his connection to The Fool concealed, fearing the exposure of his final disguise. 409 He subsequently adopted Gehrman Sparrow, a cold-blooded adventurer persona, while preparing to leave Backlund for advancement at sea. 401

Appearance

Klein’s appearance varies extensively according to the identity he is performing. After becoming a Faceless, he can alter his features almost perfectly, though he cannot create additional flesh or change his height. 366

• As Sherlock Moriarty, he wears a beard and gold-rimmed glasses. 192 233
• As a Magician, he uses white face paint, exaggerated black stars around his eyes, flamboyant clothing, and Tarot cards. 243
• As Gehrman Sparrow, he presents a cold, gaunt face, black woolen overcoat, silk hat, hidden holster, and a human-skin glove. 401
• His Faceless ability lets him imitate a target’s appearance, habits, gestures, and speech patterns for more convincing impersonation. 366 522

Personality

Klein is cautious and analytical, especially when confronted with dangerous mysteries. When he received a letter apparently written by another transmigrator, he restrained his excitement, considered the possibility of a trap, and chose to open it through a sacrifice above the Gray Fog rather than directly. 168

He is highly conscious of performance and secrecy. Klein maintains distinct personas for The Fool, The World, Sherlock Moriarty, and Gehrman Sparrow, and can preserve his composure even when conversations threaten to expose him. 254 409

Despite this guardedness, he is protective of allies. He agrees to help Allen find the missing Rian Thomas, sends Allen away when the investigation becomes too dangerous, and feels responsible when Luther’s mental condition deteriorates after the Lanerius operation. 232 233 244

Abilities & Skills

Divination

Klein uses divination to investigate people, crimes, and supernatural threats.

• Divined Triss’s location and discovered that she was meeting a superior. 94
• Used Rian Thomas’s personal effects to divine his abduction and identify the puppet-like street women involved. 233
• Can conduct divination above the Gray Fog for greater mystery and protection. 168 233
• Divination involving Evil Gods or their corruption may be obstructed or produce dangerous reactions. 168 233

Gray Fog and Tarot Club Authority

From above the Gray Fog, Klein acts as The Fool and facilitates The Tarot Club.

• Receives sacrifices and transfers items between members. 285
• Communicates with members through their corresponding crimson stars. 169 380
• Uses the Gray Fog’s concealment to isolate potentially dangerous objects, including the letter from “James Holmes.” 168
• Maintains the image of an unfathomable, knowledgeable leader while concealing his ordinary identities. 40 409

Magician Techniques

Klein uses his Magician abilities for combat, escape, deception, and scene control.

• Throws Tarot cards as weapons and distractions. 243
• Uses Tarot cards as improvised paper figurine substitutes to interfere with divination at a crime scene. 243
• Employs Magic Illusion for concealment while escaping with Luther. 244
• Relies on spiritual intuition to anticipate immediate danger, including attacks from the Demon Giant Dog. 198

Faceless Shape-shifting

As a Faceless, Klein can modify his appearance and convincingly impersonate others. 366

• Can alter facial features, hair, complexion, and apparent age. 366 522
• Studies a target’s preferences, speech patterns, habitual movements, and appearance to improve an imitation. 522
• Cannot create flesh from nothing or reduce his height. 366

Acting Method

Klein understands and actively applies the Acting Method to digest potions.

• Discovered that performing the role implied by a potion’s name reduces its influence. 35
• Shared this knowledge with Luther, hoping it would help stabilize him. 35
• Uses carefully constructed identities, particularly Sherlock Moriarty and Gehrman Sparrow, to support his own potion digestion. 379 522

Shepherded Abilities and Travel

Klein possesses a human-skin glove made from a Shepherd Beyonder characteristic, allowing him to shepherd souls within it. 401

• Killed Louis Wein and acquired the Travel ability through his soul. 654
• Intended to use Travel to transport himself and Luther to the target pursued by Luther’s Messenger. 656
• Can extract and utilize abilities through the glove, though its use is tied to the dangerous nature of shepherding souls. 401 656

Equipment / Weapons / Items

• Black Emperor Blasphemy Card — Records the potion formulas and advancement rituals of the Black Emperor pathway from Sequence 9 through Sequence 0; strengthens Klein’s soul and grants him an emperor-like aura while carried. 232
• Human-skin glove — An item made from Qilingus’s Shepherd Beyonder characteristic; can shepherd souls and access their abilities. 401
• Copper whistle left by Azik — Summons Azik’s skeletal Messenger for urgent communication and assistance. 380
• Death Knell revolver — Used to kill Mr. X; its side effect caused Klein to fear men for six hours. 656
• Tarot cards — Used in Magician combat and to obscure divination at supernatural crime scenes. 243

Relationships

• Luther Rondal / Temperance — Former Night Watcher colleague, fellow transmigrator, and recurring partner. Their reunion began in suspicion but developed into cooperation, intelligence-sharing, and mutual assistance. Luther later exposed Klein as The World, while Klein continued concealing that he was also The Fool. 170 172 409
• Azik Eggers — Klein’s former history instructor and trusted supernatural ally. Klein carries Azik’s copper whistle and relies on his Messenger for communication and emergency aid. 106 380
• Leonard Mitchell — Former Night Watcher colleague. Leonard confronted Klein during the aftermath of Lanerius’s death, but Klein escaped using Magician techniques. 35 243
• Audrey Hall / The Justice — Tarot Club member who seeks Klein’s aid in dangerous investigations; Klein also trusts her with warnings concerning large-scale threats. 143 380
• Alger Wilson / The Hanged Man — Tarot Club member whom Klein aided in the effort to find Qilingus; Alger also supplied information about the Aurora Society. 40 106
• Melissa Moretti — Klein’s younger sister. She notices when Klein behaves suspiciously, such as when he rushed downstairs after divination without changing clothes. 94

Notable Quotes

“When I act in accordance with the name of my potion, the potion seems to become more compatible with my body.” 35

“The more this happens, the more I must remain rational...” 168