The History of the Demon Slayer Corps Explained

The goal of the Demon Slayer Corps is to eradicate all demons in Japan, including their leader, Muzan Kibutsuji.

Tanjiro Kamado, the protagonist of the well-known Shonen anime and manga series Demon Slayer, embarks on a journey to find a remedy for his sister, who was transformed into a demon. In order to achieve his objective, Tanjiro undergoes rigorous training and becomes a member of the Demon Slayer Corps.

The franchise has become incredibly popular with its three seasons and a canon movie. The fourth season, which premiered last week, continues to captivate audiences. Despite this success, the history of the Demon Slayer Corps remains unexplored.

The Ubuyashiki family is in charge of the organization, dedicated to vanquishing Muzan and eliminating all demons from the world. Let us delve into the background of the Demon Slayer Corps.

What is the Demon Slayer Corps?

An image of all the Hashira from Demon Slayer — Crunchyroll

The government does not officially recognize the Demon Slayer Corps, making it an independent organization. Due to its covert operations, members must maintain secrecy and are prohibited from publicly wielding their swords.

Most people are not cognizant of its existence. By maintaining a low profile and avoiding unnecessary attention, they are able to successfully and covertly perform their duties. The Demon Slayer Corps relies solely on the support from the Ubuyashiki family and does not receive any assistance from the government or other sponsors.

The Ubuyashiki family’s accumulated wealth is a result of their exceptional ability to anticipate future needs. This income is essential in providing the necessary means and resources for the Demon Slayers to effectively carry out their duties.

When was the organization founded?

An image of Kagaya Ubuyashiki, the leader of the Demon Slayer Corps — Crunchyroll

The origins of the Demon Slayer Corps can be traced back to the Heian Era, when Muzan Kibutsuji, a distant relative of the Ubuyashiki family, transformed into a demon. This event led to a mysterious curse that plagued the Ubuyashiki bloodline, resulting in premature deaths for future generations.

The family sought guidance from a priest and committed their entire lives and fortune to vanquishing Muzan and forming the Corps. Despite their own physical limitations, the Ubuyashiki family made sure that the Corps had sufficient resources to combat the demons.

Sengoku era – The Golden Age of the demon slayers

An image of Yoriichi from Muzan's memories — Crunchyroll

In the Sengoku Era, centuries after its establishment, members of the Demon Slayer Corps were taught Breathing Styles by Yoriichi Tsugikuni. These techniques allowed them to overpower demons, leading to the development of their Demon Slayer Marks. This marked the beginning of the Golden Age for the demon slayers.

Despite the marked slayers’ shortened lifespans from using excess power, they would still pass away before reaching the age of 25. Consequently, the understanding of the Demon Slayer Mark gradually faded. Nevertheless, in every generation of the Kamado family, there will be one individual who naturally bears the mark on their forehead.

During the Sengoku Era, Yoriichi, a member of the Demon Slayer Corps, engaged in a fierce battle with Muzan and nearly succeeded in killing him. However, Muzan managed to escape, but not before sustaining severe injuries that plagued him for centuries. It was not until the current timeline, the Taisho Era, that the Demon Slayer Corps united their strength to vanquish Muzan and the Upper Moons, finally putting an end to their reign of terror.

To learn more about the franchise, we offer information on what you need to know before Demon Slayer Season 4, the episode schedule for Demon Slayer Season 4, and the identity of the most powerful Demon Slayer.