If you are a fan of Demon Slayer, you might have wondered about the connection between Yoriichi Tsugikuni, the legendary swordsman who created the Sun Breathing, and Tanjiro Kamado, the protagonist who inherited the same technique. Are they related by blood? Or is there another explanation for their striking resemblance and shared skill? In this article, we will reveal the truth behind their relationship and how it affects the story of Demon Slayer.

Who is Yoriichi Tsugikuni?

Yoriichi Tsugikuni was born hundreds of years ago with a mark of a sun on his forehead and a pair of hanafuda earrings. He was a prodigy who could see into the Transparent World, where he could observe the flow of life energy and muscle movements of living beings. He developed the Sun Breathing, the original and most powerful of all Breathing Styles, which allowed him to wield his sword with incredible speed, strength and precision.

Yoriichi dedicated his life to fighting demons, especially Muzan Kibutsuji, the progenitor of all demons. He almost killed Muzan in a single strike, but hesitated to ask him a question, which gave Muzan a chance to escape. Yoriichi considered himself a failure for letting Muzan live and for being unable to save his twin brother Michikatsu, who became a demon known as Kokushibo, the Upper Rank One of the Twelve Kizuki.

Yoriichi also taught some of his friends and allies the Sun Breathing and other Breathing Styles, laying the foundation for the Demon Slayer Corps. However, no one could master the Sun Breathing like him, as it required a special talent and affinity.

Who is Tanjiro Kamado?

Tanjiro Kamado is a young boy who lived in the mountains with his family, who sold charcoal for a living. He was kind-hearted and compassionate, always helping others in need. He also had a keen sense of smell, which he used to track animals and herbs.

One day, his life changed when he returned home to find his family slaughtered by a demon. The only survivor was his sister Nezuko, who had been turned into a demon herself. Tanjiro was then recruited by Giyu Tomioka, a Demon Slayer, who saw potential in him. Tanjiro joined the Demon Slayer Corps and trained under Sakonji Urokodaki, learning the Water Breathing Style.

Tanjiro also inherited his father’s hanafuda earrings and his dance called Hinokami Kagura, which he performed as a ritual to honor the sun god. Unbeknownst to him, this dance was actually a form of Sun Breathing that had been passed down in his family for generations.

Tanjiro’s goal was to find a way to turn Nezuko back into a human and to defeat Muzan, who was responsible for ruining his life. Along the way, he made many friends and allies who supported him in his quest.

The answer is: they are not directly related by blood. Tanjiro is not a descendant of Yoriichi, nor is he a reincarnation of him. The physical similarities between them are purely coincidental.

However, they do have an indirect connection through Sumiyoshi, a friend of Yoriichi who lived hundreds of years ago. Sumiyoshi was a poor woodcutter who was saved by Yoriichi from a demon attack. They became close friends and Yoriichi often visited him and taught him the Sun Breathing forms.

Sumiyoshi memorized the Sun Breathing techniques and passed them down to his descendants as a dance called Hinokami Kagura. He also gave them Yoriichi’s hanafuda earrings as a family heirloom. Sumiyoshi was Tanjiro’s distant ancestor, which explains how Tanjiro inherited the Sun Breathing and the earrings from him.

Tanjiro also inherited Yoriichi’s will to fight against Muzan and protect humanity from demons. He also awakened the mark of a sun on his forehead after mastering the Sun Breathing. He even met Yoriichi’s spirit in his subconscious when he was on the verge of death, and received his encouragement and approval.


Yoriichi Tsugikuni and Tanjiro Kamado are not related by blood, but they are connected by fate. They share the same technique, the same earrings, the same mark and the same enemy. They are both heroes who fought for justice and peace in a world plagued by demons.

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