Kō Sawatari is a supporting character in the anime Tamayura: Hitotose, serving as the younger brother of the protagonist Fū Sawatari. Born on August 31, 2001, he lives with his mother Tamae, his grandmother, and his older sister above the family-run Cafe Tamayura in the coastal town of Takehara, Hiroshima. As part of the household, Kō helps out at the cafe, often seen serving dishes and assisting with daily operations. His role within the Sawatari family grounds the story in a warm, everyday domesticity. In terms of personality, Kō is a quiet, good-natured young boy who is often doted on by his sister’s friends, particularly Norie Okazaki, who fusses over him because she finds him cute. He has a calm, earnest demeanor and displays a quiet maturity for his age, likely shaped by the family’s shared grief over the loss of his father. Throughout the series, Kō’s motivations are simple and consistent: he wants to support his family and help his sister pursue her passion for photography, even if he doesn’t fully understand it. He embodies the gentle, supportive environment that allows Fū to heal and grow. His key relationships include a close bond with his sister, his mother, and his grandmother, as well as friendly interactions with Fū’s friends, who treat him like a little brother. Over the course of Tamayura: Hitotose and its sequels, Kō shows subtle development: he becomes more independent and takes on more responsibility at the cafe, reflecting the passage of time and the natural maturing of a child within a close-knit community. While he possesses no extraordinary abilities, his competence in helping run the family business and his quiet attentiveness to others are his defining traits. In the overall narrative, Kō serves as a gentle anchor for the Sawatari family, a symbol of continuity and the everyday joys that photography seeks to capture.