Sumire is a girl with deep blue hair flowing over her shoulders and a hint of shadow in her clear eyes. When she feels down, she often rests her chin on her hand or stares blankly into space in the corner of a room, but she offers a soft smile whenever someone speaks to her. That contrast is captivating, giving her a mysterious charm that makes people want to hold her. Her tendency to cling to her favorite trinkets and the way her eyes light up at food reveal a fragile yet adorable girlishness. Occasionally, her whispered confessions and small, anxious glances intensify the urge to protect her.