A fictional character in the manga and anime series MAR (Marchen Awakens Romance), Koyuki is one of Ginta Toramizu's close friends who is the only one that listens to him about these dream worlds he has. Occasionally in the anime series she would bring him presents such as cakes or anything else she makes. In one of the episodes she eagerly wishes to go with him on one of his journeys, but is held back when Ginta refuses her to come along.