What is like a plant and like an animal but neither? What is a mirage but also physical? The answer is mushi. Mushi are a third type of being. They are not plants they are not animals but a little of both. Few people can see these creatures and even fewer of these become mushishi, wanderers who protect the balance between Mushi and humans. It is best to think of them as wandering healers who are both in tune with humans and mushi. The mangaka often bases the mushi after folk lore and superstitions. By borrowing from such lore we get creatures who have evolved and ripened for countless generations before being used in this work.