Senri Ubuyashiki was the bitter middle brother of Kagaya Ubuyashiki, a character drawn from a 2021 art exhibition rather than the main story. Consumed by resentment toward his family's curse, he set the family home ablaze in an act of murder-suicide.
As a child, Senri looked nearly identical to his brothers, distinguished mainly by a differently colored kimono and bangs parted down the center. His face wore a furious glare, and dark circles sat beneath his eyes, signs of the resentment that defined him.
In contrast to the gentle Kagaya or the timid Akito, Senri was unstable and full of bitterness, fiercely hating the family curse that doomed him to a short life. He also despised the custom of wearing female clothing to hold the curse at bay, possibly feeling it stripped him of his identity. His resentment deepened after his father's suicide, eventually pushing him to take his own life and his younger brother's by fire.
Within his own Ubuyashiki generation, Senri stood as the middle son. He mourned his brief lifespan and refused the family's tradition of female dress meant to slow the curse, while his grip on his sanity steadily slipped under the weight of fear. After his father took his own life, Senri spent his days cursing his mother and his older brother.
In the end he led his younger brother Akito into setting the mansion on fire, forcing a double suicide. Their mother perished in the blaze while trying to rescue them, leaving Kagaya as the family's lone survivor.

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Senri Ubuyashiki is the bitter middle brother of Kagaya Ubuyashiki in Demon Slayer. He is a character drawn from a 2021 art exhibition rather than the main story, defined by his resentment toward the family's curse.
Senri and Akito Ubuyashiki are two of Kagaya Ubuyashiki's brothers. Senri was the resentful middle son, and he led his younger brother Akito into setting the family mansion on fire in a double suicide.
Senri Ubuyashiki set the family home ablaze in an act of murder-suicide, leading his younger brother Akito into the fire with him. Their mother died in the blaze while trying to rescue them, leaving Kagaya as the family's lone survivor.
Senri Ubuyashiki was consumed by resentment toward the family curse that doomed him to a short life. He also despised the family custom of wearing female clothing to hold the curse at bay, and his bitterness deepened after his father's suicide.
Senri Ubuyashiki is eight years old. He stood as the middle son within his own Ubuyashiki generation.
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