Koito Minase (水無瀬 小糸, Minase Koito?) is one of the main characters of the Musaigen no Phantom World series. She is a first-year high school student who transferred to Hosea Academy in April and a girl with a special ability and a phantom hunter, but instead of joining a club or fighting the phantoms together with others, she fights them alone. This is due to the fact that she has shut herself off from other people because of a incident that happened during her childhood.