Who Killed Tanjiro’s Family in Demon Slayer? Also Know The Reason Behind It?

The animated series Demon Slayer shows a family which is attacked by demons and only two members of the remaining named Tanjiro and his sister Nezuko. But slowly Tanjiro’s sister turns into a demon.

Due to this, Tanjiro joins the Demon Slayer Corps in order to take revenge and also to save his sister.

In this article, you will get to know why demons killed Tanjiro’s family. Keep reading this till the end to know the reason for the killing, and who is the killer of Tanjiro’s family.

Who Killed Tanjiro’s Family?

Before revealing the name of the killer, we get to know about the family of Tanjiro Kamado.

Tanjuro Kamanda was the father of Tanjiro Kamado. And Tanjuro’s wife’s name was Kie Kamado. He and his wife had six children named Tanjiro, Nezuko, Takeo, Hanako, Shigeru, and Rokuta.

Like much other anime series, Demon Slayer’s story begins with Tanjiro Kamado, the protagonist, having a call to action. During this time, he returns from a trip to the village to his cabin in the woods to find his mother and his only surviving sister, Nezuko, who was severely hurt.

Who Killed Tanjiro’s Family in Demon Slayer

Before the episode started, Tanjiro’s father had already passed away from an illness. That only creates suspense about who murdered Tanjiro’s family.

Tanjiro meets the demon slayer Giyu Tomioka, who has the rank of Water Hashira. After finding the bodies of his family, the existence of demons and their hunters called the demon slayers, is made known to him.

Then Tanjiro begins his adventure, becoming a slayer to prevent others from suffering the same misfortune as his family and to try to find a way to turn his sister back into a human, who was turned into a demon.

Who Killed Tanjiro’s Family in Demon Slayer

After a long term of training, Tanjiro was able to give a final exam in order to join the Demon Slayer Corps. When he cracked the exam, he became an official demon slayer and started to protect others.

The real identity of the demon who murdered Tanjiro’s family was a mystery in the series’ early episodes. It was Muzan Kibutsuji, the series’ main opponent, as it was eventually revealed.

This could initially seem a little strange because Muzan doesn’t seem like the kind of person who would intentionally engage in violence without being provoked. He is less of a violent, bloodlust-fueled monster like Akaza.

Why Did Muzan Kibutsuji Kill Tanjiro’s Family?

Muzan’s motivation for attacking the Kamado family is finally revealed in the Demon Slayer manga. It turns out that Muzan attacked the Kamado family and specifically turned Nezuko into a demon in order to create a demon that would be able to withstand being in the sunlight.

As powerful and experienced as Muzan is, he and every other demon in the series have a crucial weakness and it’s the light of the sun.

Who Killed Tanjiro’s Family in Demon Slayer

The manga series’ fans rumored that Mukzan assaulted Kamado’s family because of their breathing style. And this may not be the actual reason because when Muzan attacked Kamado’s. he injected a lot of his blood into them.

So, it would produce a demon capacity of withstanding the sunlight. The main motive of Muzan is to produce a demon who can be able to replicate this power in himself so that he could ultimately stop living in fear of the sun.

However, Mukzan did not know that the Kamado family is related to Yoruichi Tsugikuni, who invented the Sun Breathing style.

You may also like to read this: Is Tanjiro the Most Powerful Demon Slayer? Reality Check!


To conclude, Mukzan killed her family of Tanjiro except for his father and sister. To the purpose of killing the Tanjiro family to eradicate his weakness and become more powerful in a day.

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