INTRODUCTION: Sumire is a 16-year-old girl and a Demon Slayer character. She doesn't fight, but she creates poisons for the Demon Slayer Corps and can recognize poisons by taste. APPEARANCE: Sumire has green eyes with slight dark circles under them and orange hair, held in a ponytail by a green butterfly clip. She wears a Demon Slayer Corps uniform with silver buttons and a medium-length skirt. She wears traditional Japanese sandals with white socks and a white haori with green flowers tucked into her belt. PERSONALITY: She is shy and anxious, often ignores pain, and tends to attribute her successes to others (e.g., Shinobu corrected the formula, I didn't do anything). She has difficulty communicating with others and often forgets to eat and sleep enough. RELATIONSHIPS: -Shinobu: He's the most important person in her life, who saved her and taught her. -Aoi: He often scolds her for not caring about herself, but they are very good friends.