Mu Yu

Biodata

Feature	Details
Name	Mu Yu (暮雨)
Alias(es)	Qian Muyu; Hell Reaper; Nightmare Douluo; King Wenle
Species/Race	Human; transmigrated from Earth
Gender	Female
Affiliation	Sea God Island; Martial Soul Hall; Seven Treasure Glazed Tile Sect; Heaven Dou Royal Academy; Heaven Dou Empire
Occupation/Role	Successor of the God of Space; inheritor of the Sea God's Divine Position; disciple of Gu Rong
Status	Active
First Appearance	1

Power Progression

Stage / Realm / Level	Chapter	Notes
Innate Soul Power Level 10	6	Awakened the Thousand Silk Puppet Martial Soul with innate full soul power; her second Martial Soul, the God-bestowed Nightmare Beast, was kept secret.
Level 15	10	Reached this level after obtaining first Soul Rings for both Martial Souls, each a Ten Thousand Year ring.
Level 20	10	Absorbed the Ten Thousand Year Gale Twin-Headed Wolf left-leg Soul Bone and unlocked Wind Blade Claw.
Level 21	12	Entered Slaughter City at this level and defeated Black Armored Knights without Soul Skills.
Level 24	14	Returned from Slaughter City after clearing Hell Road and gaining the Slaughter God's Domain.
Level 25	15	Displayed two Ten Thousand Year Soul Rings on the Thousand Silk Puppet when seeking Gu Rong as a master.
Level 27	16	Advanced two levels through Gu Rong and Chen Xin's intensive combat training.
Level 30	17	Completed the God of Space's first trial—reaching Level 30 before age seven—and received a God-Bestowed Soul Ring for Nightmare Beast.
Level 33	18	Began the Sea God's Black-level Four Trials with the Puppet's third Soul Ring already obtained.
Level 41	18	Absorbed the Hundred Thousand Year Demonic Orca King's Soul Ring and thigh bone after Xi Ruo accelerated her cultivation.
Level 46	18	Received a five-level increase after completing the Sea God's Black-level Second Trial.
Level 49	18	Received three additional levels and a physical-fitness increase for completing the third Black-level trial.
Level 51 / Nightmare Beast Level 40	22	Revealed five rings on Thousand Silk Puppet—two black and three red—and four rings on Nightmare Beast—one black and three gold.
Level 60	24	Announced her breakthrough upon entering Heaven Dou Royal Academy's Heavenly Supreme Class.
Rank 72	29	Reached Rank 72 at age fifteen while pursuing the God of Space's sixth trial.
Level 80	38	Reached Level 80 after absorbing the Titan Giant Ape's Soul Ring and completing a full set of Soul Bones.
Level 90	39	Completed the God of Space's sixth trial and later adopted the title Nightmare Douluo. 40

Background

Mu Yu transmigrated from Earth to Sea God Island as a young child. There, the God of Space chose her as his successor and assigned her Divine Position inheritance trials. Little Bai brought her to Sea Horse City, where Bo Saixi and the Seven Sacred Pillar Guardians accepted and protected her after confirming her connection to the Sea God. 1

She spent two years on Sea God Island and developed a family-like relationship with Bo Saixi and the Sacred Pillar Guardians. Before leaving for the mainland at age five, she received several gifts, including Sea Wang Douluo's Mermaid's Tear necklace. Activating the necklace formed a contract between Mu Yu and the Mermaid King, Xi Ruo. 2

In the Star Dou Great Forest, Mu Yu saved the injured Qian Renxue from a Phoenix-tail Crested Serpent despite not having awakened her Martial Soul. Qian Daoliu subsequently brought her to Martial Soul Hall, adopted her as his granddaughter, and revealed her status as the God of Space's heir to the Worship Hall. 3 4

Appearance

Mu Yu is introduced as a small girl, five years old when she meets Qian Renxue and six when she enters Slaughter City. 3 12

• Her eyes emit a dark-purple glow when she activates the Nightmare Beast Martial Soul. 15
• Her left leg displays a dark-green Soul Bone when using Wind Blade Claw. 10
• She later gains an External Soul Bone that manifests as wings and allows flight. 23
• The Nightmare Beast's Martial Soul True Body transforms her into a Nightmare Beast form. 48

Personality

Mu Yu adapts quickly to sudden changes, accepting both her transmigration and the God of Space's succession trial without hesitation. She is diligent in study and physical training, rebuilding boxing skills from her previous life and developing a physique beyond that of her peers. 1 5

She is protective toward people she considers family or friends, particularly Qian Renxue, Ning Rongrong, Zhu Zhuqing, and the commoner students targeted by A Min. She is also willing to challenge authority when she believes someone is wronged, including Bibi Dong, Tang Hao, and Yu Xiaogang. 5 21 31 32

Her compassion is paired with ruthlessness and calculation in combat. She saves A Min from abuse, yet kills challengers in Slaughter City without mercy; later, she repeatedly manipulates Tang Hao and the Clear Sky Sect into pursuing one another. 12 13 24

Abilities & Skills

Dual Martial Souls

Mu Yu possesses twin Martial Souls and innate full soul power.

• Thousand Silk Puppet — an ancient Martial Soul she develops as a versatile auxiliary and control type. 6 7 15
• Nightmare Beast — a God-bestowed Martial Soul granted by the God of Space; it has spatial, control, and spiritual applications. 6 15
• Gu Rong initially restricts her use of Nightmare Beast in public Soul Duels except when her life is in danger. 17

Thousand Silk Puppet

The Thousand Silk Puppet can attack, defend, restrain opponents, probe minds, and imitate other Soul Masters.

• Parasitism — restricts an opponent's movement and inflicts a mental shock. 9 17
• Frenzy — greatly raises the Puppet's attack and defense. 12
• Burst — summons the Puppet to block or directly strike opponents. 17 19
• Invasion — probes an enemy's memories and transforms the Puppet into the target's greatest fear; the target's fear strengthens the Puppet. 18
• Thread Control / Thread Pull — allows Mu Yu to exchange positions with the Puppet and control targets through threads for six seconds against weaker foes or three seconds against stronger ones. 18
• Copy — creates a copy of someone she knows capable of wielding ninety percent of that person's power for ten minutes. 26

Nightmare Beast

Nightmare Beast provides Mu Yu with close-range offense, battlefield control, illusions, and transformation.

• Beast Claws — transforms her hands into purple beast claws for close combat. 9
• Dark Mist — obscures the battlefield and deprives enemies of clear vision. 18
• Dream Eater — fires an illusory purple beam at a target. 23
• Nightmare — manifests massive black chains to bind enemies. 25 47
• Illusory Foam — surrounds enemies with rainbow-colored, poisonous bubbles. 26 47
• Martial Soul True Body — her seventh Soul Skill, transforming her into Nightmare Beast form. 48
• Lost — her ninth Soul Skill, creating an illusion that traps the target. 48

Domains

Mu Yu possesses several exceptionally powerful domains.

• Slaughter God's Domain — gained by clearing Hell Road; Qian Daoliu judged its pressure comparable to his Angel Domain. 14
• Nightmare Domain — recreates Hell Road-like conditions and can summon manifestations such as the Three-Headed Bat King and Ten Headed Fierce Yang Serpent. 38
• Divine Slaughter's Domain — suppresses enemies, lowering surrounding air pressure and freezing the sea surface. 26
• Death Domain — used alongside Nightmare Domain against the Nine-Headed Bat King. 47

Spirit Souls and Contracts

Mu Yu's Mermaid's Tear contract with Xi Ruo gives her access to the Mermaid King's protection and assistance. Xi Ruo helped her absorb a Ten Thousand Year Soul Ring, clear Hell Road, hunt the Demonic Orca King, and battle the Deep Sea Demonic Whale King. 2 8 13 18 25

She later commands several Spirit Souls, including Xiao Mo, the Deep Sea Demonic Whale King, and the Demon Empress. Di Tian is not identified as her Spirit Soul, but obeys her commands. 29

Sea God's Power

Mu Yu inherits the Sea God's Divine Position and successfully pulls the Sea God's Trident from its trial site with support from her Spirit Souls. 27

• The Sea God's Trident is a super divine artifact weighing one hundred and eight jin. 27
• Sea God's Light enhances her combat ability against sea Soul Beasts and suppresses opponents such as the Demon Empress. 26

Soul Bones

Mu Yu accumulates numerous Soul Bones during her trials and hunts.

• Gale Twin-Headed Wolf left-leg bone — grants Wind Blade Claw. 10
• Demonic Orca King right-leg bone — grants Evil Orca Mirror Destruction, Evil Orca Demon Charm, Evil Orca Fang Shatter Slash, Orca Evil Axe, and Evil Orca's Wrath. 19 20
• Skull Soul Bone — records and replays events as evidence. 20
• Sky Blue Vine left-arm bone — creates defensive vines. 22 23
• External Soul Bone — grants wings and flight. 23
• Dark Gold Dreadclaw Bear right-hand bone — absorbed after being provided by the Worship Hall. 23
• Reached a complete set of Soul Bones after absorbing the Titan Giant Ape's Soul Ring and Soul Bones. 38

Equipment / Weapons / Items

• Mermaid's Tear — a natural storage Soul Tool created from mermaid tears; it can attract mermaids at sea and serves as the basis of Mu Yu's contract with Xi Ruo. 2 9
• Sea Woman Douluo's flute — used to summon or contact Demon Soul Great White Sharks, including Xiao Bai. 18
• Sea Spear Douluo's short sword — used to save Qian Renxue before Mu Yu awakened her Martial Soul. 3
• Qingluan Douluo's short knife — carried for protection while entering Slaughter City. 11 12
• Sea God's Trident — divine artifact inherited after Mu Yu completed the fifth Sea God trial. 27
• Deep Sea Sinking Silver sword — forged by Lou Gao at Qian Daoliu's request; its hilt bears engravings of Puppet, Nightmare Beast, and “Yu.” 29

Relationships

• God of Space — her patron deity and the one who selected her as successor; he grants her Divine Position trials and God-Bestowed Soul Rings. 1 6 17
• Xi Ruo — Mermaid King contracted through Mermaid's Tear; protector, combat partner, and one of Mu Yu's closest Spirit Soul companions. 2 18 29
• Qian Daoliu — adoptive grandfather; brought Mu Yu to Martial Soul Hall, supports her cultivation, and commissioned her Deep Sea Sinking Silver sword. 4 29
• Qian Renxue — adoptive older sister; Mu Yu saved her in the Star Dou Great Forest, and the two maintain a close sibling bond. 3 16
• Bo Saixi — Sea God Island elder whom Mu Yu calls Grandma; she and the Sacred Pillar Guardians regard Mu Yu as family. 2 9 18
• Gu Rong — Mu Yu's master in the Seven Treasure Glazed Tile Sect; provides harsh training and protects her from threats. 15 17
• Chen Xin — Gu Rong's fellow trainer and a grandfatherly mentor figure to Mu Yu. 16 20
• Hu Liena — childhood friend from Martial Soul Hall; their friendship begins after Hu Liena apologizes for Yan's behavior. 5
• Ning Rongrong — younger-sister figure and trainee; Mu Yu trains, protects, and provides resources for her development. 22 25
• Dugu Bo — ally and beneficiary of Mu Yu's detoxification method and Soul Bone gift; later cooperates with her against Tang Hao. 22 24
• Ah Yin — ally revived by Mu Yu; agrees to follow Mu Yu's arrangements and oppose Tang Hao. 36
• Tang Hao — principal enemy; repeatedly pursues Mu Yu for her Soul Bones, leading her to orchestrate his eventual downfall. 19 24 44
• Tang San — hostile rival whose conflicts with Mu Yu escalate through the Shrek Academy and tournament arcs. 36 39 40

Story Role / Major Arcs

Sea God Island and Martial Soul Hall

Mu Yu arrives on Sea God Island as the God of Space's chosen successor, is raised by Bo Saixi and the Sacred Pillar Guardians, then leaves for the mainland. After saving Qian Renxue, she becomes Qian Daoliu's adopted granddaughter and a protected member of Martial Soul Hall. 1 2 3 4

Awakening and First God Trial

She awakens Thousand Silk Puppet and Nightmare Beast with innate full soul power, obtains two Ten Thousand Year first Soul Rings, and completes the God of Space's demand to reach Level 30 before age seven. 6 9 17

Slaughter City

At age six, Mu Yu enters Slaughter City, earns the title Hell Reaper after ninety-nine consecutive Hell Slaughter Arena victories, clears Hell Road, and gains the Slaughter God's Domain. 12 13 14

Sea God's Black-level Trials

Mu Yu returns to Sea God Island for the Sea God's Black-level Four Trials. She climbs the Sea God's Light, hunts the Demonic Orca King, defeats Sea Dragon Douluo and Sea Horse Douluo in her assessments, and rapidly rises to Level 49. 18 19

Seven Treasure Glazed Tile Sect and Heaven Dou

As Gu Rong's disciple, Mu Yu trains under Gu Rong and Chen Xin, befriends Ning Rongrong and Dugu Yan, joins Heaven Dou Royal Academy, and uses the Ice and Fire Yin Yang Well to secure allies and resources. 15 16 22 24

Sea God's Trident and Spirit Souls

Mu Yu inherits the Sea God's Divine Position, extracts the Sea God's Trident, and develops the Spirit Soul system around powerful Soul Beasts including Xiao Mo, the Deep Sea Demonic Whale King, and the Demon Empress. 26 27 29

Conflict with Tang Hao and Shrek Academy

Mu Yu opposes Tang Hao after he repeatedly targets her for her Soul Bones. She uses the Clear Sky Sect's Seventh Elder to pursue him, protects Ning Rongrong and Zhu Zhuqing around Shrek Academy, and prevents Shrek from defeating Heaven Dou Royal Academy. 24 31 32 38 39

Slaughter City Return

Mu Yu leads Hu Liena, Yan, Xie Yue, and Zhu Zhuqing back into Slaughter City. She battles the Nine-Headed Bat King, helps Zhu Zhuqing obtain its Soul Ring, appoints a new King of Slaughter, and proceeds toward the Asura Sword before being interrupted by a mysterious voice claiming to be her mother. 46 47 48