Nerissa Ravencroft

With a deep love of song, Nerissa Ravencroft is "The Demon of Sound."
Her powerful love turned into a dark power that inhabited her singing, giving her music the potential to drive the entire world mad. The gods, fearful of her beautiful voice, decided to seal her away for eternity, but this did not seal away her desire to sing for others. While she was sealed away, she came across Japanese otaku culture, and is currently fascinated by idol songs and penlights. Maybe her life imprisoned wasn't all that bad.

Source: https://hololive.hololivepro.com/en/talents/nerissa-ravencroft/