Yu Xiaoxiao

Biodata

Feature	Details
Name	Yu Xiaoxiao (虞小小)
Species/Race	Human
Gender	Female
Affiliation	Yu family; Dihua Ability Institute's Physical Training Academy; Secret Department 77 1477
Occupation/Role	Assassin; Physical Training Academy disciple; Demon Controller 231 1477
Status	Active
First Appearance	Chapter 4

Power Progression

Stage / Realm / Level	Chapter	Notes
Slaughter God Bloodline awakened	45–46	Her concern for the gravely injured Yu Jing triggers the bloodline: her pupils become silver and blade-like, her speed doubles, and her killing intent frightens Shen Yixuan.
Rook Mid-stage	77	Her physical-quality sheet lists A- nerve reaction, A+ consciousness strength, S fear resistance, and an S+ Slaughter God Bloodline.
Early Ghost Taming Stage	594	After receiving a volatile shadow-related core from her family and swallowing its Ghost Bead, she is identified as an Early Ghost Taming Stage disciple.
Second Stage of Transcendence; Duke-level title	852	She returns to the Yu family headquarters having gained a Duke-level title during the Second Stage of Transcendence.
Demon Controller	1477	She trains to control the Shadow Demon, Jack the Ripper, and develop the Shadow Kill technique under the Secret Department's extreme regimen.

Background

Yu Xiaoxiao is the daughter of Patriarch Yu, head of the Yu family, a major assassin family. She was born and raised at the family headquarters, but its strict rules and memories of her upbringing leave her distressed rather than nostalgic. Master Fu acts as a protective, grandfatherly figure in her life. 49 57 852 860

She first meets Yu Jing as one of seven Research Institute test subjects. Initially distant, she accepts food from him, gives him her name, and warns him to leave if he wants to live. 4 At Dihua Ability Institute, other students avoid her because of her family background; she instead asks Yu Jing to join her for the midnight physical training. 26 27

During the Deep Mountain Inn physical training, Yu Jing's severe injuries provoke the awakening of her Slaughter God Bloodline. She fights alongside him against Shen Yixuan and uses her final strength to destroy the evil spirit's core with her dagger. 45 47

Her family repeatedly pulls her away for missions and training. She travels to Rat City in the Western Continent to obtain a rare shadow-related core, later entering Ghost Taming Stage after integrating it. 570 575 594 Following her engagement to Yu Jing, Patriarch Yu keeps her at the family headquarters for six months of intensive training, permanently sharpening her silver-eyed bloodline state. 861 866 874

Appearance

Yu Xiaoxiao is a petite young woman with fair, jade-like skin, delicate features, and ear-length black hair. Her appearance is often described as innocent and youthful, contrasting sharply with the cold killing intent she displays in combat. 4 32

• Clear dark eyes that become sharp, silver, blade-like pupils when her Slaughter God Bloodline activates. 45 46
• Usually carries a concealed blade and favors close-fitting black combat attire during missions. 26 424
• After six months of family training, she wears her hair in a small bun with a bone hairpin and appears noticeably more mature. 874
• Later wears a shadow-attribute cloak that can merge into her own shadow. 1098

Personality

Yu Xiaoxiao is simple, innocent, and unusually direct. She does not fully understand many social conventions, including romance and engagement, and is notably motivated by food; instant noodles, duck wings, and home-cooked meals all make her visibly happy. 27 79 187 796

She distrusts strangers and reacts instinctively to perceived danger. Her family background and childhood training have made her guarded, and she can show open hostility toward people she considers scheming or dangerous. 34 186 In battle, her demeanor changes completely: she suppresses her presence, focuses only on eliminating the opponent, and displays decisive killing intent. 204 608

Despite her natural combat talent, Yu Xiaoxiao does not enjoy fighting or seek status for its own sake. Her loss to Deng Mingchuan exposes her lack of confidence against stronger opponents, while Yu Gan criticizes her reluctance to fight directly. 1107 1130 She nevertheless endures severe Secret Department training in order to keep pace with Yu Jing's growth. 1477

Abilities & Skills

Slaughter God Bloodline

An S+-rated innate bloodline that gives Yu Xiaoxiao exceptional assassin-oriented physical abilities. 77

• Enhances physical function, nerve reaction, focus, stealth, and attack power. 77 1459
• Removes her bodily aura upon activation, making mental tracking and perception difficult. 77 307
• Changes her pupils to silver and dramatically improves her speed and combat reactions. 45 46
• Allows speed great enough to evade Bai Xiao's attacks and leave him with numerous dagger wounds. 320
• Her physique is highly suited to rapid learning, though it does not make mastering the Heavenly Fox Style painless or easy. 853 863

Assassination Arts

Yu Xiaoxiao is trained in stealth, close-quarters killing, and exploiting openings rather than prolonged frontal exchanges. 204 231

• Can suppress her aura and disappear into crowds during an assassination mission. 204
• Uses speed and precision to extract an enemy's core or heart before they can react. 248 601
• Can turn her body into a shadow to escape restraints and appear at an opponent's blind spot. 594
• Her traditional Yu family style is less effective against mechanical lifeforms that lack human reactions and perception. 826
• Her direct-combat performance is limited by her reluctance to fight head-on against powerful opponents. 1130

Shadow Ghost Fusion

A rare shadow-related ghost creature resides within Yu Xiaoxiao's core. Its fusion with her complements her assassination techniques and expands her control over darkness. 570 608 1117

• Creates shadow clones and false bodies to mislead opponents. 607
• Allows her to manipulate surrounding darkness and form shadow blades or a killing formation. 601 607
• Can suppress and absorb shadow-type opponents, including the Dark Duke. 1117
• Her Ghost Fusion initially remains incomplete and can place her into prolonged absorption or meditation states. 1098 1130
• The ghost's power can become unstable, stripping shadows from nearby people and manifesting hostile shadow limbs. 1183

Demon Controller Techniques

Yu Xiaoxiao becomes a postnatal Demon Controller connected to the Shadow Demon, Jack the Ripper. 1477 1531

• Trains in the Shadow Kill technique under intense lighting designed to eliminate available shadows. 1477
• Practices against continuously generated enemies and Secret Department sparring partners. 1477
• Her demon energy manifests as black energy that complements her shadow attribute. 1531
• Her training is physically exhausting; she is required to remain standing even during brief recovery periods. 1477

Equipment / Weapons / Items

• Silver dagger / Curse Dagger — Her primary assassination weapon; used to destroy Shen Yixuan's core and later wielded with her shadow abilities. 47 608
• Death Curse Short Blade — A Human-grade Ghost Soldier given to her by her family; its practice wounds her arm. 425
• Shadow-attribute cloak — A cloak that resonates with her core ability and can merge into her shadow for storage and use. 1096 1098
• Thousand-Segment Demon Blade — A weapon refined from Xiang Chen's demon pearl. 1561
• Storage ring — Holds her belongings and equipment. 57
• White heating stone — A special stone used to ignite and heat water for instant noodles. 27

Relationships

• Yu Jing — Her first trusted companion at the Research Institute, later roommate, combat partner, fiancé, and primary source of safety and emotional support. Their relationship develops from mutual protection during physical training to an official engagement. 4 47 323 861 864
• Patriarch Yu — Her father and head of the Yu family. Though initially emotionally distant, he later personally trains her and pushes her to gain the ability to protect herself. 57 796 861 866
• Madam Yu — Her mother. Yu Xiaoxiao fears her mother's restrictions and is summoned away from Yu Jing upon returning to the family headquarters. 27 852 860
• Master Fu — Yu family elder and medical expert who treats her as a granddaughter, offers instruction in killing techniques, and supports her relationship with Yu Jing. 224 852
• Yu Feng — Her brother. He accompanies her in special tests and later supports her prospects in competition. 307 1561
• Yu Gan — Yu Jing's master, who recognizes the potential of her Slaughter God Bloodline and offers to teach her assassination arts. 1103 1130
• Feng Bao Bao — One of the first peers to approach Yu Xiaoxiao without fearing her family name; helps her become more comfortable socializing. 186 187
• Ning Yanzhi — A fellow disciple Yu Xiaoxiao openly dislikes and considers dangerous because of his government connections. 67

Story Role / Major Arcs

• Research Institute Test — Meets Yu Jing, warns him that the test is dangerous, and chooses to train with him. 4 27
• Deep Mountain Inn Physical Training — Awakens the Slaughter God Bloodline, protects Yu Jing, and helps kill Shen Yixuan. 45 47
• Dihua Institute Life — Becomes Yu Jing's roommate, enters the Physical Training Academy, and gradually begins socializing with his friends. 57 77 186 187
• Shadow Core Acquisition — Travels to Rat City for a rare shadow core, then integrates it to advance her Ghost Taming abilities. 570 575
• Competition Arc — Demonstrates shadow assassination techniques, defeats the Dark Duke, and reaches the semifinals before losing to Deng Mingchuan from exhaustion. 601 1117 1130
• Yu Family Engagement — Returns to the Yu family headquarters with Yu Jing, confronts difficult childhood memories, and becomes formally engaged to him. 852 860 861
• Secret Department Training — Is recruited into the Secret Department, trains as a Demon Controller, and becomes a candidate for the Ten Prodigies. 1477 1531

Trivia

• Yu Xiaoxiao is nineteen when she first begins socializing with Feng Bao Bao and Yu Jing's other friends. 187
• She had never eaten instant noodles before Yu Jing shared them with her. 27
• She is especially fond of food and readily forgets uncomfortable subjects when offered breakfast or a meal. 79 241
• She prefers staying with Yu Jing over living among strangers who fear or judge her because of the Yu family. 57