Demon Slayer Division

Biodata

Feature	Value
Name	Demon Slayer Division
Original Name	斩妖司
Organization Type	Dynasty organization independent of the military 12
Affiliation	Great Yuan Dynasty 12
Occupation/Role	Investigating and eliminating demons, heretical sects, and demonic cults; protecting civilians 12 128 159
Jurisdiction	Operates within the Great Yuan Dynasty; its Azure Province division handles threats throughout the province 12 160
Known Leader	Gu Changsheng, Prefect of the Azure Province Demon Slayer Division 129 210
First Appearance	Mentioned by Chen Feng as a possible destination for Wang Xuan 11

Mandate and Authority

• Independent enforcement powers: The Division operates separately from the army and possesses the authority to “execute first and report later” 12.
• Investigation and suppression: It tracks demons and cult activity, handles smaller threats through Inspectors, and deploys Demon Slayer Guards against incidents beyond an Inspector’s capabilities 128.
• Civilian protection: Elder Mu defines demon-slaying as a means of protecting ordinary people from evil, rather than an end in itself 159.
• Military assistance: The Division can order investigations in which soldiers assist with searches while its own personnel handle the underlying demonic threat 12.
• Protection against clan retaliation: Wang Xuan seeks its protection after killing Yun Lei in self-defense. The Yun family hesitates to demand his surrender directly, but orders its disciples to investigate him within the Division 127.

Organization and Ranks

Operational Branches

Branch	Responsibilities	Requirements and Organization
Inspectors	Patrol assigned areas, investigate traces of demons and cults, and directly resolve smaller incidents. Their later duties also include monitoring rebellious families 128 260.	Work individually or with teams. Li Jiuxiao’s squad consists of experienced specialists whose abilities exceed those of ordinary Demon Slayer Guards 175 260 265.
Demon Slayer Guards	Train at the Division and deploy against threats that Inspectors cannot handle 128.	Follow a military-style system, with 100 members per team and a normal minimum requirement of the Jade Bone Realm 128.

Guard Command Structure

Position	Cultivation Requirement	Responsibility
Demon Slayer Guard	Jade Bone Realm	Member of a 100-person team 128.
Captain	Golden Blood Realm	Leads a team 128.
Commander	Five Spirits Realm	Commands approximately 1,000 personnel 128 175.

The Division also has Elders and a Prefect. Elders oversee assessments, deployments, and merit rewards; Gu Changsheng serves as the Azure Province Prefect 159 175 210 215.

Recruitment and Assessment

Entry Requirements

• Talent and character are both required. Joining midway through one’s training is difficult because most members are cultivated by the Division from childhood 127.
• Early recruitment is possible for exceptional talents. Chen Feng initially reports an Entangling Serpent Realm minimum, with opportunities for gifted candidates to enter early for training 12.
• Branch requirements differ. The later explanation specifies Jade Bone Realm as the ordinary minimum for Demon Slayer Guards 128.
• Demonic-aura screening: Arrivals are scanned by the Golden Vertical Eye, which detects demon auras 128.
• Trial location: The assessment takes place inside the Prefect’s Eight Desolations Demon Suppression Tower, a Supreme-Grade Spiritual Artifact 129.

Assessment Grades

Grade	Outcome
D	Candidate is eliminated 128.
C	Candidate qualifies to join the Division 128.
B	Candidate gains freedom to choose between operational branches 128.
A	Candidate also gains branch choice and a greater initial resource allocation. Wang Xuan receives one opportunity to enter the Scripture Pavilion’s third floor 160 161.

Wang Xuan receives a Grade A evaluation while still below the Guard’s normal cultivation threshold. He is initially assigned to Guard training, with further arrangements to follow after reaching the Jade Bone Realm 160.

Trial Stages

Stage	Documented Features	Purpose
First trial	Combat against successive enemy waves; Wang Xuan’s opponents include a Golden Blood Realm demon 133 159.	Tests combat ability 159.
Second trial	A stepped Dao Heart trial containing simulated Dao Heart Tribulations 133 159.	Tests resolve under spiritual pressure 159.
Third trial	Candidates experience the same Red Mountain Sect scenario as powerless mortals 149 159.	Tests judgment, courage, benevolence, and the protection of innocents 159.

• Wang Xuan’s trial difficulty is doubled after his exceptional first-stage performance. He passes one simulated Dao Heart Tribulation but fails the second after reaching the tenth step 159.
• In the third trial, he rescues children, frees trapped souls, and attempts to reason with the Red Mountain Goddess before opposing her when she threatens innocents 159.
• Elder Mu praises his ability to judge threats by their actions rather than simply their appearance 159.
• Liu Shu identifies Wang Xuan as the first Grade A recruit in the local Division in sixty years, following Qin Feng. Li Qingyi is treated separately because she came from the Imperial Capital 161.

Facilities and Resources

Headquarters and Security

• Concealed entrance: Old Chen guards an approach protected by formations. The first layer changes the apparent surroundings and conceals access to the Division 127.
• Gateway access: Old Chen directs Wang Xuan through a gateway into the Division’s grounds 128.
• Defensive purpose: Old Chen explains that the formations protect the organization from the many demons and heretics seeking its destruction 127.
• Training grounds: Demon Slayer Guards practice and spar within the headquarters between deployments 128 175.
• Deployment plaza: A large plaza contains the bronze Domain Gate used for long-distance mobilization 175.

Scripture Pavilion

The Scripture Pavilion holds cultivation methods, martial arts, and Mystic Arts seized during the Division’s suppression of hostile organizations. Its collection is described as the most extensive in Azure Province, though not necessarily the strongest; it is also said to contain demon cultivation methods 160.

Floor	Access
First	Open to any Division disciple 160.
Second	Requires contribution points earned through missions and other service 160.
Third	Normally requires a significant contribution; contribution points alone are insufficient 160.

• First-Grade Martial Arts remain extremely precious even within the Division 133.
• Secret techniques are reserved for outstanding performance and significant contributions on major missions 267.

Merit Rewards

• Contribution points: Members receive basic resources, while additional benefits require merits represented by contribution points 203.
• Heavenly Treasure Vault: Contribution points can obtain natural treasures, precious artifacts, and spiritual implements from this separate treasury 203.
• Exceptional rewards: For his Linshui County service, Wang Xuan receives one million contribution points and one request the Division can fulfill, provided it is reasonable and does not violate human ethics or morality 215.

Transport and Mission Equipment

• Domain Gate: Enables rapid long-distance deployment but consumes so much energy that the Division rarely uses it 175.
• Winged ships: Thirty ships transport the initial Linshui County force through the Domain Gate and the dangerous void realm 175 176.
• Size Alteration: An Elder shrinks the ships after arrival and stores them in his pocket 176.
• Mind Stabilizing Pills: Issued during the Linshui operation to counter the Soul Calming Sect’s Soul Binding Art 176.
• Inspector tokens: Li Qingyi carries a cyan-white identity token bearing the character for “Inspector” 33.

Internal Factions and Discipline

Faction	Composition	Position within the Division
Noble Clan Faction	Disciples from noble families 161.	Benefits from family backing and the resources donated by local clans 161.
Commoner Faction	Disciples from ordinary backgrounds, including Liu Shu and Wang Xuan 161.	Competes with noble-backed members for influence and resources 161.

The Division depends on court allocations as well as support from local noble clans and sects. These powers provide funding, resources, and local intelligence; in return, their descendants receive training within the organization. Liu Shu explains that court funding alone is insufficient amid the dynasty’s internal and external troubles 161.

• Strength determines influence: Liu Shu states that stronger members have greater say within the Division 161.
• Resource allocation fuels rivalry: Higher assessment grades grant better initial resources, making Wang Xuan’s Grade A privileges a source of jealousy 161.
• Internal strife is forbidden: Settling personal grudges through combat requires both parties’ agreement 161.
• Mission cooperation takes priority: Xue Baisong stresses that noble and commoner disciples must act as comrades who can entrust their lives to one another during deployments 174.

Mission Classification

The Beacon Fire Signal summons personnel for missions. The system has five threat levels 175.

Mission Level	Horn Signal	Known Significance
Level Three	Three blasts	Lowest classification; the White Water County Pity Life Sect incident is described as, at most, this level 175.
Level Two	Six blasts	Above Level Three 175.
Level One	Nine blasts	Often involves heavy casualties; normally occurs once every six months to a year 175.
Calamity-Level	Higher-level signals use doubled horn blasts	Above Level One 175.
Catastrophe-Level	Higher-level signals use doubled horn blasts	City-destroying threat; only a few have occurred in Azure Province’s history 175.

Notable Personnel

Leadership

• Gu Changsheng — Azure Province Prefect and owner of the trial tower. Returns after decades of disappearance to stop the Soul Calming Holy Mother’s descent; his reputation inspires many recruits 129 210 213.
• Zhuge Wudi — Grand Elder. Battles Helian Wuji, participates in rewarding Wang Xuan, and dispatches Li Jiuxiao’s squad to Black Mountain 207 215 265.
• Elder Mu — Oversees and explains the recruitment trials, emphasizing civilian protection and moral judgment 159.
• Zhang Tong — Commander responsible for Wang Xuan’s deployment contingent; praises his contributions after the Linshui mission 175 214.
• Jiang Xiuchen — Five Spirits Realm Vice Commander who brings reinforcements and leads the assault on Huangjia Village 194 195.

Guards and Inspectors

• Li Qingyi — Inspector who intervenes on Wang Xuan’s behalf and invites him to join the Division 33 48.
• Liu Shu and Zhang Liu — Demon Slayer Guard Commanders who guide Wang Xuan through entry procedures. Liu Shu later explains the Division’s factions and resource system 128 161.
• Wang Xuan — Grade A recruit, initially trained with the Guards and later accepted into Li Jiuxiao’s Inspector squad 160 161 262.
• Li Jiuxiao — Experienced Inspector and squad leader. Leaves clan politics behind and spends much of the year carrying out missions 265 266.
• Luo Yueli — Member of Li Jiuxiao’s squad, raised in the Division by an Elder related to her after her family’s misfortune 265.
• Meng Fei — Inspector from an ordinary family, recruited after attracting an Elder’s attention. His cultivation gives him one-tenth demon bloodline, but he remains hostile toward demons 260 265 270.
• Liu Xiangnan — Formation Master from Wind Capital and member of Li Jiuxiao’s squad; seals the Demon Stele Fragment’s aura and prepares formations against enemy sects 266 269 270.
• Old Chen — Gatekeeper responsible for the concealed headquarters entrance 127 128.

Major Operations

White Water County and the Pity Life Sect

The Division orders the investigation that brings Chen Feng’s soldiers into contact with the Pity Life Sect’s demonic activity. The soldiers assist with searching, while the Division is responsible for handling the threat 12.

Its intervention later saves Wang Xuan during his attack on a sacrificial gathering. Chen Feng explicitly credits the Division with preventing his death 23 25. After the Chillshadow Gulch incident, Li Qingyi invites Wang Xuan to join 48.

Linshui County: Soul Calming Sect Suppression

The Soul Calming Sect infiltrates Linshui County’s Division personnel, army, and noble families. Three Inspectors sent to investigate die mysteriously. Fighting between the compromised factions plunges the county into chaos, while nearby demons exploit the disorder 175.

Phase	Division Action and Outcome
Initial deployment	Sends three Commanders, thirty teams, and 3,000 personnel through the Domain Gate 175.
Village operations	Divides the force into smaller groups; Wang Xuan’s group is assigned ten villages east of the county 176.
Huangjia Village investigation	Encounters puppets, deceptive formations, and infiltrators. Zhang Kui is discovered to have been killed and replaced 186.
Node destruction	Orders the formation nodes destroyed within one incense stick’s time. Wang Xuan receives protection from two Five Spirits Realm experts while breaking the village formation 195.
County rescue	Members split up to slay ghosts and save survivors after the Huangjia Village node is destroyed 203 204 214.
Final confrontation	Zhuge Wudi battles Helian Wuji; Gu Changsheng returns, destroys the Divine Embryo, and severs the Holy Mother’s connection to the world 207 210.
Aftermath	Recognizes Wang Xuan’s intelligence gathering and node destruction, granting exceptional merit rewards 214 215.

• Deployment losses: The Division sends 2,000 reinforcements after the initial 3,000—roughly half its manpower altogether. Fewer than 2,000 remain at the post-mission gathering 214.
• Wider consequences: The near-disaster alerts Azure Province’s sects and noble families to the growing threat of heretical organizations 213.

Black Mountain Investigation

Zhuge Wudi assigns Li Jiuxiao, Luo Yueli, Meng Fei, Liu Xiangnan, and Wang Xuan a secret mission to investigate Black Mountain’s connection to the Black Mountain Demon Emperor’s Seated Land of Nirvana 262 265.

• Insertion: Zhuge Wudi teleports the squad to the outskirts of White Water County, and Wang Xuan guides it toward Black Mountain 265.
• Hostile surveillance: The squad detects watchers and later identifies the Demon Clan’s involvement 266 269.
• Fragment pursuit: Liu Xiangnan seals the aura of the squad’s Demon Stele Fragment before the group tracks the Joyful Union Sect 269.
• Ambush: The squad surrounds the sect members with a formation that suppresses and strips their Source Energy 270 271.
• Intelligence obtained: Captured sect member Chen Mang reveals that fourteen heretical and demonic sects seek the Emperor’s inheritance. Fragments of the Heavenly Profound Demon Stele are keys to locating a passage to one of his tombs 273.
• Enemy manipulation: The Demon Clan secretly intends to use the Division to find and open the passage, while preserving Wang Xuan for his unusual detection abilities 265 266 269.

Notable Quote

“Our Demon Slayer Division eliminates demons and defends the Dao in order to protect the common people from being eroded by evil!”
— Elder Mu 159