The human high-school-aged girl who becomes lost in Demon World through unknown methods and for unknown reasons, she becomes a ghost after being eaten by a carnivorous plant. The triangle headband she dawns is a symbol of this. Yanagi is a from Japan, and because of this Staz is even more interested in her, often asking about anime and manga from the human world. She wishes to be resurrected as a human, and to help Staz achieve that goal.

Spoiler

It is later revealed she is the sister of Hydra Bell, and the "daughter" of Neyn.