Koito Minase  

, 水無瀬 小糸

A girl with the unique ability to harness the power of singing-generated sound waves to combat Phantoms. She's often seen wearing headphones. Although she enjoys working independently, this stems from childhood isolation caused by her powers manifesting at a young age, which made those around her fearful. Despite possessing strong abilities as a child, her classmates, friends, and even parents were afraid of her due to her powers.