Manami Sugihara is a character frequently absent from school due to persistent illness. Her life takes a transformative turn upon meeting the protagonist; together, they care for an injured bird. This shared experience fosters newfound emotional strength and courage, enabling Manami to confront her vulnerabilities.

Within the anime narrative, Manami is hospitalized for febricula, an illness later implied as potentially terminal. During her hospital stay, she becomes deeply preoccupied with her legacy, contemplating what she can leave behind. She channels this preoccupation into creative expression, writing poetry and short stories to preserve her dreams and sustain hope for the future.