Sumi Shinazugawa

Sumi Shinazugawa was a younger sister of Sanemi and Genya Shinazugawa.

Appearance
Sumi was a girl of small frame and light skin tone. She had dark colored hair that was fastened in a low bun with her bangs clipped back on the crown of her head. She also had a very small face with large, blue round eyes. Sumi bore a great resemblance to her mother.

She wore a long light red kimono with an orange obi.

Personality
Sumi was a warm and caring child, much like the rest of her siblings. During one of her father's violent outbursts, she blocked her youngest sibling's view in order to prevent him from seeing it. She loved her mother dearly and was worried for her wellbeing when she was late to come home, noting that she had never done so before.

History
Sumi was born to Kyogo and Shizu Shinazugawa. She had 6 siblings, with Sanemi and Genya being her two oldest brother. Their father was extremely abusive to his family, though she was often protected by her mother during his violent outbursts, until the day he was stabbed to death for being loathed so much by other people.

One night, as she and her siblings slept, Genya and Sanemi had realized that their mother had not returned home yet. Sanemi set out to find her and Genya stayed behind, shortly after which Sumi and their other siblings woke up to wait for their mother as well. She expressed worry as their mother had never been so late, dawn was approaching, but Genya tried to put her concern at ease and asked for them to go back to sleep.

A knock then rang from the door, leading Sumi, Hiroshi, Teiko, and Shuya to open it to greet their returning mother. Genya, seeing the figure behind the window and sensing danger, tried to warn them against opening but the door broke open. Their transformed mother rushed into the house and attacked them, killing Sumi instantly.

Swordsmith Village Arc
During Genya's battle with Upper Rank Four Hantengu, he discovered the main body in control of the emotion manifestations but failed to cut through its neck. In disbelief, he quickly sensed that the manifestation of anger had appeared behind him and prepared to deliver a clear blow to his head to kill him. Realizing he will die, his life began to flash before his eye and he reminisced on his past, remembering the deaths of his siblings and mother.

Sunrise Countdown Arc
As Sanemi's life ebbed away from his wounds, he found himself in the afterlife and saw Sumi, Genya, Hiroshi, Teiko, Shuya, and Koto in heaven.

Trivia

 * Sumi's given name contains the kanji for "longevity, congratulations, one's natural life" (寿) and "beautiful" (美).
 * Sumi's surname Shinazugawa contains the kanji for "immortality, eternal life" (不死) and "river, stream" (川).