Mushi

Mushi are a type of supernatural being central to the manga and anime series Mushishi by Yuki Urushibara. They are described as primordial, elemental lifeforms that exist in a realm distinct from humans, though they can interact with and influence the human world. Mushi are neither inherently good nor evil; they are simply a fundamental part of nature, analogous to bacteria, viruses, or other microscopic organisms, but on a spiritual or supernatural level.

Their existence predates all other life, and they are responsible for many natural phenomena, including the creation of life itself. Mushi can manifest in various forms, from microscopic entities to more complex, visible creatures. They often inhabit specific environments, such as forests, water, or even the human body. When mushi interact with humans, they can cause a wide range of effects, often referred to as "mushi-no-waza" or "mushi-afflictions." These afflictions can be physical, mental, or even alter a person's perception of reality.

Humans who are particularly sensitive to mushi can sometimes develop strange abilities or symptoms due to their presence. The protagonist of Mushishi, Ginko, is a "mushishi," a person who travels the world studying mushi and helping people affected by them. Mushishi often have unique knowledge and abilities that allow them to understand, coexist with, or even neutralize the effects of mushi. The series explores the delicate balance between humans and mushi, emphasizing respect for nature and the often-unseen forces that shape existence.