The one who started it all.

Updated on April 29, 12:18 p.m. (GMT+8):Added images.

In the captivating world ofDemon Slayer, where humanity is threatened by malevolent creatures known as demons, one particular question is often overlooked by fans. Who was the first demon in Demon Slayer?

The story follows the journey of Tanjiro Kamado, a young boy whose life is turned upside down when his family is murdered, and his sister Nezuko is turned into a demon.

Demon Slayer season 4 To the Hashira Training movie key image featuring the the Wind Hashira Sanemi Shinazugawa and the Serpent Hashira Obanai Iguro

According to the series’ lore, demons are not creatures of birth or creation but humans who have been irreversibly transfigured. Every demon has varying motivations on why they became a creature of the night. Some humans accepted the offer to become a demon, while some were forced into becoming one.

Within the series filled with malevolent beings, it is important to discern the primary demon in the series. This character holds exceptional significance, as their pivotal role drives the narrative forward.

All Demon Slayer Hashira with a caption that ranks them from weakest to strongest

Warning: Major spoilers for fans who have not read the manga and those who have yet to watch the anime.

Why is the first demon in Demon Slayer so crucial to the story of the series?

Technically, the first demon to appear in the series is Nezuko. After the Kamado family was slaughtered in the anime’s first episode and the manga’s first chapter, Nezuko was transformed into a demon and tried to kill Tanjiro.

Amidst the fierce battle between the siblings, Giyu Tomioka, the Water Pillar, interjects, intending to sever Nezuko’s head.

Nezuko first demon in Demon Slayer

However, Tanjiro intervened and saved his sister. Uncertain of the appropriate course of action, Giyu reluctantly listens to his instincts, dispatching the Kamado siblings to the Sagiri mountains, where they seek the guidance of Giyu’s former mentor, Sakonji Urokodaki.

However, if we’re talking about the first demon to exist in the series. In that case, the honor belongs toMuzan Kibutsuji, the main villain of the series who murdered the Kamado family and pushed Tanjiro to begin his journey as a Demon Slayer.

Tanjiro Kamado in the Demon Slayer Hinokami Chronicles with a caption about the game

Revered as the Demon King and serving as the principal antagonist throughout Demon Slayer, Muzan’s transformation occurred a millennium ago during the Heian Era.

Born with a terminal illness, the young Muzan faced an imminent demise until an experimental procedure altered his genetic composition, saving him from the clutches of death.

Demon Slayer antagonist Muzan Kibutsuji in Season 3’s one-hour special opening episode with the caption who the character is

Infused with newfound vitality, Muzan embarked on a nefarious crusade, spreading his affliction across Japan. Muzan’s rise to power brought forth tragedy and torment.

However, it also started the campaign of the Demon Slayer Corp, a group of warriors with the sole purpose of ridding the world of demons.

Funko POP Animation: Demon Slayer- Tanjiro Kamado

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READ MORE:Demon Slayer watch order: How to watch the anime and movies in chronological order

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