Did Sumiyoshi Kamado know Sun Breathing in Demon Slayer?

Demon Slayer has introduced various types of breathing, and all of them are unique and visually stunning. One of the most mysterious and powerful ancient techniques was the Sun Breathing style invented by Yoriichi Tsugikuni. This was said to be the original and most potent of all Breathing Techniques. As an ancestor of the Kamado family, Sumiyoshi played a vital role in preserving the Sun Breathing techniques. But fans wondered if Sumiyoshi Kamado knew Sun Breathing himself.

While the story never explicitly answered this question, there are several strong implications that suggest he might have known how to use Sun Breathing. Sumiyoshi Kamado was the ancestor of Tanjiro. He lived during the same era as Yoriichi Tsugikuni and was introduced in flashbacks experienced by Tanjiro during his comatose states, specifically during the Swordsmith Village Arc and the Sunrise Countdown Arc.

His character looked very similar to Tanjiro, except for the fact that he looked much older and did not have a scar. He wore clothing strikingly similar to Tanjiro's familiar checkered haori and had the same kind and empathetic demeanor. Crucially, Sumiyoshi was never a warrior or a member of the Demon Slayer Corps.

He met Yoriichi by accident. One day, he and his wife, Suyako, were attacked by a demon while she was heavily pregnant. Yoriichi saved them, and they became lifelong friends. This was the start of the bond between him and the Kamado family.

After helping Sumiyoshi’s family, Yoriichi became a close friend and visited their home often. In one emotional flashback, Tanjiro sees Yoriichi opening up to Sumiyoshi about his painful past, how he was born unwanted, lost his beloved wife Uta, fought demons in the Demon Slayer Corps, failed to kill Muzan Kibutsuji, and was eventually banished.

One day, Yoriichi performed all thirteen forms of Sun Breathing as a final offering to the Kamado family. As Yoriichi moved through each form, Sumiyoshi watched with full concentration, committing every motion, every breath, and every stance to memory. Later on, he then passed it down as the Hinokami Kagura, a ceremonial dance performed annually by Kamado descendants in honor of the fire god.

Therefore, it would not be wrong to say that Sumiyoshi Kamado knew the Sun Breathing technique, but not in the way other demon hunters do. The brilliance of Sumiyoshi’s character lies in how ordinary he is. He’s not a warrior nor a Demon Slayer. He’s a father, a friend, and a witness to history.

The legacy that was carried to the present in Demon Slayer

Sumiyoshi’s extraordinary memory power was fruitful for the generation to come. By meticulously memorizing Yoriichi’s movements and passing them down through a ceremonial dance, he ensured that even untrained descendants could inherit this powerful technique.

Furthermore, there was strong evidence that he knew this style. The accurate transmission of the Hinokami Kagura across generations implies that Sumiyoshi understood the techniques deeply enough to physically perform and teach them. This requires more than simple observation; it suggests a physical mastery of the forms, even without their application in battle.

Like all Breathing Styles, Sun Breathing relies on posture, breath control, and rhythm. Even without a blade, synchronizing one's body to those patterns through dance would cultivate a deep physical alignment with the technique in Demon Slayer.

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In conclusion, Sumiyoshi knew Sun Breathing in the sense that he memorized the forms, movements, and breath patterns of Yoriichi’s techniques. He likely practiced them as a ritual, passing them down faithfully as the Hinokami Kagura, and ensured their preservation over generations. Though not a warrior himself, Sumiyoshi’s role as a silent guardian of Yoriichi’s legacy was no less heroic.

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