We fans always get excited when the story shows something about old bloodlines. And in Demon Slayer, the moment Muichiro and Tanjiro started showing signs of inherited powers, we all started asking the same question—How are Muichiro and Tanjiro Related?

Their breathing styles, their marks, and even the flashbacks, everything feels connected. But the real answer is deeper and has a pretty interesting history. Let us break it down clearly, and know what is the story behind it is.

Who Are Muichiro Tokito and Tanjiro Kamado in Demon Slayer in Brief?

Muichiro Tokito is the Mist Hashira, known for his quiet nature and deadly speed. He became a Hashira at just 14 years old, which itself tells you how sharp his talent is. His Mist Breathing style is something he developed from Wind Breathing, and it suits his calm and detached personality.

Tanjiro Kamado, the main character, starts from a completely different background. He was just a boy selling charcoal when demons destroyed his family. Since then, he joined the Demon Slayer Corps, looking for a cure for his sister, Nezuko, who turned into a demon.

At first, Tanjiro uses Water Breathing, but later unlocks Sun Breathing, which is the original and strongest style. His family carries this technique as a dance called Hinokami Kagura, passed down from his ancestor Sumiyoshi Kamado, who was once a friend of Yoriichi Tsugikuni.

How Are Muichiro and Tanjiro Related in Demon Slayer?

If you are still wondering how are Muichiro and Tanjiro related, the short answer is they are and they are not at the same time. But the long answer is much more interesting.

Muichiro comes from the Tsugikuni bloodline, the same family as Yoriichi’s twin brother, Kokushibo. In the Infinity Castle arc, Kokushibo uses Transparent World during battle and confirms that Muichiro is his direct descendant. That means Muichiro is tied by blood to Yoriichi’s family, through Kokushibo.

Tanjiro, on the other hand, is not part of this bloodline. His family is connected to Yoriichi through friendship, not family. In the Sengoku era, Tanjiro’s ancestor Sumiyoshi was a charcoal burner who became close friends with Yoriichi. Yoriichi gave him the Sun Breathing technique and the hanafuda earrings, and Sumiyoshi passed it down through generations.

So the link looks like this:

• Muichiro = descendant of Kokushibo (Yoriichi’s twin)
• Tanjiro = descendant of Sumiyoshi (Yoriichi’s friend)

Their paths cross because of legacy—not because of family. Or you can say it was fate, maybe.

Are Muichiro and Tanjiro Blood Relatives?

The clear answer for Are Muichiro and Tanjiro Blood Relatives is No, they are not. Even though both are connected to Yoriichi’s story, their lineages are separate. Muichiro’s connection comes from blood. He is from the same family as Kokushibo, and Kokushibo himself says this during their fight in the manga.

Tanjiro’s connection is through the Sun Breathing style, which was given to his ancestor Sumiyoshi. Yoriichi never had children, and his bloodline ended with him. That is why Tanjiro cannot be his descendant.

You can say one follows the blood, and the other follows the promise.

Do Muichiro and Tanjiro Know They Are Related?

Muichiro and Tanjiro do not know that They Are Related. In the Swordsmith Village arc, Muichiro starts remembering his past. He even says that Tanjiro’s eyes remind him of his father. But he never says anything about a family connection.

In the Infinity Castle arc, Kokushibo tells Muichiro about the bloodline. But Tanjiro is never present during that scene. He never hears that Muichiro is from the Tsugikuni family.

Tanjiro himself sees the memories of Sumiyoshi Kamado and understands the history of Sun Breathing, but he never learns that Muichiro is tied to the same era through Kokushibo.

There is no moment in the story where both of them talk about this. Their bond stays strong as fighters and friends, not as family.

In the End

This whole topic about Muichiro’s bloodline and Tanjiro’s connection to Yoriichi has become one of the hottest topics and has become an interesting part of Demon Slayer lore. We fans love these small hidden threads that bring characters together from across time.

One through blood. One through memory. But both are standing together in the final battle.

So, what do you think? Did you also think how are Muichiro and Tanjiro related and what are your thoughts now. Tell us in the comments below—we would love to know your thoughts.