Demon Slayer Corps

The Demon Slayer Corps is an organization that has existed since ancient times, dedicating its existence to protecting humanity from demons.

Overview
Operating in secrecy, the Demon Slayer Corps exists as an organization that is not officially recognized by the government. This clandestine nature necessitates that Demon Slayers cannot openly carry their swords while in public. The majority of people are unaware of the existence of demons, and even if Demon Slayers were to reveal the truth about their job and weapons, they would be met with skepticism and disbelief from most individuals. Allowing Demon Slayers to openly wield swords would only incite chaos and confusion among the general population. Nevertheless, whispers of the Demon Slayers have permeated public consciousness, existing as mere folklore in the minds of some. This is evident when a civilian witnesses a Demon Slayer engaging a demon firsthand, coming face-to-face with the reality of their existence and the truth behind the tales they've heard.

Within the Ubuyashiki family, their unique gift of foresight has enabled them to avert disaster and accumulate considerable wealth. These resources are utilized to sustain the daily operations of the Corps, ensuring that Demon Slayers have the necessary support to fulfill their duties.

History
Around a thousand years ago, a distant relative of the current Ubuyashiki family named Muzan Kibutsuji underwent a transformation, becoming the very first demon. This event marked the beginning of a curse that would plague the Ubuyashiki bloodline. Each subsequent generation would be afflicted with sickness and weakness, succumbing to an untimely demise before reaching adulthood. Faced with the imminent extinction of their family, the Ubuyashiki sought the guidance of a priest who offered a solution: they must dedicate their souls to the eradication of the Demon Progenitor and the purification of the world from demons, thus breaking the curse that bound them.

Inspired by this counsel, the Ubuyashiki family established the Demon Slayer Corps and assumed the responsibility of leading the battle against Muzan for nearly a millennium. Though the curse persisted, the resilience of those born into the clan seemed to strengthen over time, granting them a greater resistance to death. However, the shadow of mortality still loomed, as the members of the family would ultimately meet their end before reaching the age of thirty. Driven by their ancestral duty and fueled by the hope of one day overcoming the curse, the Ubuyashiki family continued to persevere, their unwavering commitment to the cause propelling them forward in the fight against Muzan and his demonic horde.

Ultimately, the Corps succeeded in killing Muzan after a long and arduous battle. With the demise of the progenitor of all demons, his creations were also eradicated from existence. This decisive victory marked the end of an era and brought about the disbandment of the Corps. Kiriya Ubuyashiki, the final leader of the Corps, was not only freed from the curse that had plagued his family for generations, but also ascended to the remarkable status of being the oldest living person in Japan.

Leader
The leader of the Demon Slayer Corps, revered as Oyakata-sama (お) by his subordinates, serves as the head of the organization and is traditionally a member of the Ubuyashiki family. The position of leadership is inherited by the eldest son of the Ubuyashiki family upon the death of the previous leader. However, due to the curse that afflicts the leaders, their lives are tragically cut short, and none of them have lived beyond the age of thirty. Consequently, most leaders assume their role at a very young age. Kagaya Ubuyashiki, for instance, took on the mantle at the tender age of four following his father's suicide, while his son Kiriya Ubuyashiki assumed the responsibility at the age of eight. Aware of their limited lifespan, each leader of the Corps adopts a sense of urgency in raising their children, instilling strict discipline and guidance to expedite their growth into capable individuals. The purpose behind such a rigorous upbringing is to ensure the preparedness of their successors, who will be tasked with assuming the crucial responsibility of leading the Demon Slayers upon the leader's inevitable death.

In the day-to-day operations of the Corps, the leader receives essential support from their family members. Together, they undertake crucial responsibilities such as organizing and coordinating the deployment of Demon Slayers to areas plagued by demon activity, overseeing the entrance exam known as the Final Selection for aspiring Demon Slayers, and conducting meetings with the elite Hashira, the highest-ranked members of the organization. To stay well-informed and maintain effective communication with Corps members, the leader utilizes the Kasugai Crows.

Throughout its history, the Corps leaders have never had the presence of a bodyguard, despite the dangers they face. This tradition persisted even after one of the leaders was killed by a demon, and their head was delivered to Muzan by the treacherous Kokushibo, a former Demon Slayer turned demon.

Demon Slayers
The Demon Slayers (鬼狩り様) comprise the backbone of the Corps. Within the organization, there exist hundreds of skilled and dedicated individuals who have taken up the noble duty of hunting down and eliminating demons. Among the ranks of the Demon Slayers, a select group of elite Slayers possessing extraordinary skills in a specific Breathing Style are known as the Hashira. These elite Slayers train and mentor a chosen few known as the Tsuguko, ensuring the legacy of expertise is passed down to future generations.

Kakushi
Within the Corps, a unit known as the Kakushi provide essential support for the Corps. The majority of them have no swordsmanship skills. The members of the Kakushi tend to injured Demon Slayers, ensuring prompt first aid and safe transportation to Butterfly Mansion for further medical care. Additionally, they undertake the crucial task of of battlefield cleanup and creating the distinctive uniforms worn by the Slayers.

Swordsmiths
Affiliated with the Corps, the Swordsmiths from the Swordsmith Village are a dedicated group of skilled artisans specialized in the forging, repairing, and maintenance of Nichirin Swords who ensure the Slayers are equipped with formidable weapons. In addition, they also craft a range of combat and training equipment, including the Yoriichi Type Zero battle doll.

Cultivators
Cultivators play a vital role in nurturing individuals to become Demon Slayers. Each of them employ their own methods for training and are specialized in a specific Breathing Style. When a cultivator deems their student ready, they grant permission for them to participate in the Final Selection. If the student survives the selection, they will be accepted as a Demon Slayer in the Corps. Cultivators are few in number and dispersed across various locations. Most of them has a background as skilled Slayers who retired for various reasons. After retirement, they dedicate themselves to cultivating worthy successors. Renowned figures such as former Water Hashira Sakonji Urokodaki and Thunder Hashira Jigoro Kuwajima exemplify the role of Cultivators in the Corps.

Ubuyashiki Estate
The Ubuyashiki Estate serves as the central hub of the Demon Slayer Corps Headquarters. Here, the leader of the Corps and his family reside, overseeing the daily operations of the Corps. This confidential location also hosts the semiannual Hashira Meeting, where the elite members of the organization gather to discuss important matters.

Mount Fujikasane
Mount Fujikasane, a mountain enveloped in a blanket of Wisteria and invested with demons at the area around the mountaintop, serves as the venue for the Final Selection. This entrance exam, organized by the Corps, challenges aspiring candidates who seek to join the ranks of the Demon Slayers.

Swordsmith Village
The Swordsmith Village is the dwelling place of the skilled swordsmiths who craft powerful weapons for the Demon Slayers in foundries and workshops. To safeguard the village from potential demon threats, its precise whereabouts are closely guarded and kept confidential.

Butterfly Mansion
The Butterfly Mansion, an establishment connected to the Corps, functions as a dedicated recovery base for injured Demon Slayers. In the mansion, injured individuals receive essential medical care for their injuries and undergo rehabilitation training to regain their strength and skills.

Known Members
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